I have a few questions about the Evoms CAI for those of you in the know.

My birthday is coming up at the beginning of March, so I have decided to put all the money donated my way, towards another mod (recently had Revo stage 1 and Eibachs fitted). I am considering a CAI due to seeing lots of people raving about them, and the Evoms appears to be a favourite. The problem I have is that I have the new TSI engine in the FL VRS and until recently, there were only kits available for the FSI. However, I have seen today that JKM are now doing the Evoms for the TSI, although only list it as suitable for the Golf Gti Mk6. (see bottom of the page in link below)

http://www.jkm.org.uk/performance/tfsiinduction.htm#tsi2

I have seen on several other websites, that it is listed as suitable for the last of the Gti Mk5 with the TSI engine, the Jetta Gti and Audi A3. I have checked by engine bay and it appears identical in layout to the one in the pics which is a Mk6.

So my questions are, will it fit the Octavia FL, is it worth the money or is it just hype (are the power figures exaggerated), what effect does it have on fuel consumption and how loud is it in normal driving conditions around town and when cruising on the motorway (I know my wife would hate it if she could hear it all the time).

Thanks in advance for any replies.

Nick.

Update - I have spoken to JKM today and at this time they cannot state whether or not the Evoms will fit the Vrs. They have a Vrs on order and it is due for delivery at the end of the month, so should know shortly after then.

Any Evoms owners want to comment ref my other questions?

Update - I have spoken to JKM today and at this time they cannot state whether or not the Evoms will fit the Vrs. They have a Vrs on order and it is due for delivery at the end of the month, so should know shortly after then.

Any Evoms owners want to comment ref my other questions?

If you have a shiny new FL VRS then personally I wouldn't mess around with any mods that stand out until you are very comfortable that the car is bedded in and is unlikely to face any warranty issues.

Also, IMHO the Evoms just isn't worth the money on a Stage I car - 300 or so notes on a mod that only adds a wheezy noise, perhaps a few bhp over a performance panel filter (or a regularly changed paper one for that matter) and involves ditching the stock engine cover (either for an Evoms one and more cash or leave it with no cover) from a purely personal point of view just doesn't make sense to me. And then look at the picture of the Evoms kit and think about 'inherent value' - its a bit of plastic, bit of tubing and a cone filter....for £300! Ok, there may be a bit more to it than that, but not much!

Now don't get me wrong - if you have pots of money or don't care about any of the above points or truly believe that an Evoms will add 15bhp (the more realistic best-case seems to be about 8-10 on cars with maps i.e. Stage 2 or beyond that will require the extra air), or are happy to drop that kind of money knowing that it might be only 3-5 bhp on your car, then go for it...I'm not one to stand between a man and his modding bug as that would be hypocrisy.

If I had a spare £300 and was going to spend it - it would be on a Stage I which you have, followed by a RARB and, assuming the FL VRS pads are the same as the Mk 2, a set of decent brake pads.

There will probably be many different and diverging opinion on this - that was just mine.

If you have a shiny new FL VRS then personally I wouldn't mess around with any mods that stand out until you are very comfortable that the car is bedded in and is unlikely to face any warranty issues.

Also, IMHO the Evoms just isn't worth the money on a Stage I car - 300 or so notes on a mod that only adds a wheezy noise, perhaps a few bhp over a performance panel filter (or a regularly changed paper one for that matter) and involves ditching the stock engine cover (either for an Evoms one and more cash or leave it with no cover) from a purely personal point of view just doesn't make sense to me. And then look at the picture of the Evoms kit and think about 'inherent value' - its a bit of plastic, bit of tubing and a cone filter....for £300! Ok, there may be a bit more to it than that, but not much!

Now don't get me wrong - if you have pots of money or don't care about any of the above points or truly believe that an Evoms will add 15bhp (the more realistic best-case seems to be about 8-10 on cars with maps i.e. Stage 2 or beyond that will require the extra air), or are happy to drop that kind of money knowing that it might be only 3-5 bhp on your car, then go for it...I'm not one to stand between a man and his modding bug as that would be hypocrisy.

If I had a spare £300 and was going to spend it - it would be on a Stage I which you have, followed by a RARB and, assuming the FL VRS pads are the same as the Mk 2, a set of decent brake pads.

There will probably be many different and diverging opinion on this - that was just mine.

i agree. if your not even ,mapped at all id steer clear of the intake for the momnent as you qont reap the benefits as stock. instead id be getting it mapped, makes the bigest differnce of any mod by far. Intake is a good idea froom stage 1 onwards IMO.

Gains on evoms are proven on the dynos between 8-12hp mark. there are others out now that claim alot more. I know my ITG made 9hp over my prevous code red intake( took a while for my car to adapt to the extra air coming in), and recently the forge twintake made 15hp over perfomance panel filter on a k03 stage 2 revo car(runing low boost), so intakes are a veryu gppd mod, and 100% needed but not at your stage of tune.

and thast from the opinionand experience with a TFSI. the TSI tunes better than the old engine http://www.sharkperformance.co.uk/brands/Skoda/Octavia%20(1Z)%202004-2009/Skoda%20Octavia%20(1Z)%202004-2009%20vRS%202.0TSi%20211PS/

Thanks for the comments guys. Just to confirm, I do have Revo Stage 1. Got it installed at about 800 miles on the clock. Now 4.5k and no issues at all. Think they would have shown themselves by now, so not too bothered about any warranty issues.

Will probably be looking to go to Stage 2 in the future, so think I'm right in saying that an intake would be worthwhile? Which would offer the best trade off in noise (nothing too intrusive at normal speeds would be nice), price and performance gains?

Thanks.

Also, my understanding is that with the new Tsi engine, the actual engine cover is not affected so does not need to be removed like on the older Fsi version.

Also, my understanding is that with the new Tsi engine, the actual engine cover is not affected so does not need to be removed like on the older Fsi version.

I believe the intake is independent from the engine cover on the Tsi, so that will save you 100 quid on a new cover.

I have the Evoms fitted to my Tfsi, with an Angel Tuning remap, the map alone was excellent, slightly improved mpg when driving normally (which doesn't happen very often after a remap).

Prior to fitting the intake, I had idling issues which the stealers batted away as the fault of the map - after 8 months? I don't think so! - However once the intake was fitted along with a replacement engine cover the problem went. My immediate reaction after fitment was - WOW! the engine could finally breath, response was sharper and crisper in all gears, and mid-range torque improved, and under normal driving conditions a marked improvement on mpg over standard.

Unfortunately I haven't got a before and after dyno, but in real driving, the difference is very obvious and to be fair unless your chasing figures, that’s what’s important.

In answer to your question about noise, its there all the time when accelerating but only excessive under heavy throttle.....but believe me, its a good sound!

HTH Pagey

Edited 19 January, 201016 yr by Pagey1255

Also, my understanding is that with the new Tsi engine, the actual engine cover is not affected so does not need to be removed like on the older Fsi version.

Well, I didn't know that so learned something new myself!

In fact, most of the experience has been with tfsi engines whereas folks may still be on a bit of a learning curve with tsi and we should maybe not be too quick to assume that performance gains on the tsi will be the same or better or worse. vRSy gave a link to Shark Performance and Ben, who runs it, is one of only a handful of folks whose figures I would trust as being the safe maximum that can be obtained. A Stage I on the tsi giving 255bhp is a pretty impressive improvement in itself and may still be a bit of a handful on a FWD car! Clearly air intake/exhaust was not a rate limiting step to that point. I am not sure if Ben has a Stage II for the tsi at this time or indeed who has as I have not looked into it for tsi's.

However, if you are going to look at mods ahead of a Stage II then, as vRSy points out the Evoms has proven gains on the dyno and plenty like Pagey who talk about a better all-round feel to the car. I have personally only heard of +10bhp waaaaay back on Makefish's car which was Stage 2 or 2+ iirc (there was mention of +15 on a Revo Stage I in the same thread but I didn't see the hard evidence and would be tempted to ignore). Then again, I am not sure what effect a £35 performance panel filter has in terms of dyno-proven gains over a clean stock paper filter on a Stage 2 though (we have to be careful that 'gains' are not about a filthy paper filter being replaced with a new CAI and dyno'd and then folks saying, oooh, look at the improvement); maybe someone can enlighten me. I will probably go Evoms or similar too but will be on the lookout for something second hand as I still think £300 is a lot of money for what it is. If you are going this direction then by all means consider Evoms or a Twintake but my guess would be that you will be 'at the same place' as with the tfsi cars and it would need to be partnered with a performance exhaust for both sides of the air in/air out equation.

If you are anywhere near 255bhp then I stand by my earlier point - I would hold off with you nice new car, if not to keep on-side with any warranty issues then to see what happens with a good sample of others taking a tsi to Stage 2 in addition to my firm belief that you should be sorting handling out before chasing bhp numbers i.e. suspension/RARB and brakes. I eventually was talked into this on this forum and it is some of the best advice that I have ever taken!

HTH Dave

Edited 19 January, 201016 yr by muckipup

You wanna get your self an ITG intake mate, awesome intake with proven high gains on them(have a look through the Vag forums, there are alot of dyno results showing the gains).

They are all over the shop now on SCN and mk5gti now. Alot of guys including me have moved from previous perfomance intakes(myself from a Code Red intake, others from the likes of dbilias, and evoms) and still made good gains. so over a stock intake the gains will be even more impressive. Plus it sounds ace.

Completely sealed off from the engine bay, so no hot air, its dead cold the touch even after driving around town.

the heat shield even follows the line of the bonnet as well

Not the cheapest intake though, £300+vat iirc, i got it way cheaper than that though as i was a guinea pig for the octavia

Edited 19 January, 201016 yr by vRSy

You wanna get your self an ITG intake mate, awesome intake with proven high gains on them(have a look through the Vag forums, there are alot of dyno results showing the gains).

They are all over the shop now on SCN and mk5gti now. Alot of guys including me have moved from previous perfomance intakes(myself from a Code Red intake, others from the likes of dbilias, and evoms) and still made good gains. so over a stock intake the gains will be even more impressive. Plus it sounds ace.

Completely sealed off from the engine bay, so no hot air, its dead cold the touch even after driving around town.

the heat shield even follows the line of the bonnet as well

Not the cheapest intake though, £300+vat iirc, i got it way cheaper than that though as i was a guinea pig for the octavia

Thanks again, VRSy.

Yes, I looked that one up after I saw it on your sig. I will be looking for that on the second hand forums also otherwise it may have to wait a month or two before I can justify anything new. I have a Pipe Werx 3" dp that I hope to fit this weekend so, with that, and the cost of Ben's STS with the Stage 2 and a new panel filter, I have done enough damage for this month!!

Have to say, the ITG does look the biz. I take it that there is no hope of keeping or modding the stock engine cover.

Thanks for the advice, looks great, although from what I have seen this is not available for the Tsi?

I have spoken to Andy at ITG. He has yet to see any of the Tsi engines but is very keen on doing so. He needs a doner vehicle which I might be able to provide, but in the meantime have agreed to send some photos of the engine bay.

mate offer your car up as the doner vehicle.

you will never meet a guy who is more enthusiastic about their job than him. hes got severe OCD when it comes to intakes. but hes a pleasure to work with. i got mine for £270 incl vat for being the guinea pig, new they are 300+vat, so £350 incl vat. thats a good saving.

proven to give very good gains as well. The R&D has already been done on these engines on the REVO stage 2+ Cupra K1 as the original guinea pig, the diffwerence will be minimal intake wise, as you still use the same turbo.

@muckipup

have you bought the STS from ben then. you'll enjoy that. very good power delivery on it.

reference the ITG, you'd be lucky to find oone available second hand. a few k04 guys have sold them second hand but they were snapped up immediately.

@muckipup

have you bought the STS from ben then. you'll enjoy that. very good power delivery on it.

reference the ITG, you'd be lucky to find oone available second hand. a few k04 guys have sold them second hand but they were snapped up immediately.

Yup, I received it a week or two ago but have not even had a chance to plug it in and download the current map and send it to Ben let alone put the Stage 2 on. I have also had my Pipe Werx dp/cat sitting around for a while (after changing my mind on the Milltek as I couldn't be bothered sourcing a reducing piece when the PW already does this). However, I will fit it tomorrow as I have the day off

Re. the CAI, I don't expect a bargain, be it ITG, Evoms or whatever to pop up any time soon but I will be patient and keep looking. I want one, I just don't want to part with c£300 for one!

Edited 21 January, 201016 yr by muckipup

Yup, I received it a week or two ago but have not even had a chance to plug it in and download the current map and send it to Ben let alone put the Stage 2 on. I have also had my Pipe Werx dp/cat sitting around for a while (after changing my mind on the Milltek as I couldn't be bothered sourcing a reducing piece when the PW already does this). However, I will fit it tomorrow as I have the day off

Re. the CAI, I don't expect a bargain, be it ITG, Evoms or whatever to pop up any time soon but I will be patient and keep looking. I want one, I just don't want to part with c£300 for one!

you could do it now, it takes five minutes to download your map. then ben has all night and tomorrow whist your fitting your downpipe to sort you out with some proper power.

@muckipup

its now dinner time, you have had all morning, so why havent you posted your findings, :p

@muckipup

its now dinner time, you have had all morning, so why havent you posted your findings, :p

Pipe Werx dp successfully fitted today and original map sent to Ben @ Shark Performance. Hoping to receive my Stage 2 in the very near future

Even with the Stage 1 currently on it, I was pleasantly surprised by the effect that just the performance dp had on it own! I take back all the very rude things I said to my PC when I saw people talk of notable performance increases, improved throttle response etc.

Pipe Werx dp successfully fitted today and original map sent to Ben @ Shark Performance. Hoping to receive my Stage 2 in the very near future

Even with the Stage 1 currently on it, I was pleasantly surprised by the effect that just the performance dp had on it own! I take back all the very rude things I said to my PC when I saw people talk of notable performance increases, improved throttle response etc.

we dont make this sh!t up. :p

we dont make this sh!t up. :p

Oh, I dunno, there are a few exaggerations on these forums and a fair bit of 'placebo effect' with mods. I guess I was expecting something, but not much, from the dp alone. I am not saying it's like a Stage 2+ or anything like that but certainly a very real difference.

some of those DP bolts are a apain in the ass though arnt they.

How are you likeing the new burble. I thought it sounded really good. let us know how you get on with your new map then.

you are right about the exagerations that you can get, but ill assure you i noticed a bigger differnce fitting my intake than i did my downpipe(until the stage 2 map was loaded of course,

Edited 23 January, 201016 yr by vRSy

@muckipup

http://www.mk5golfgti.co.uk/forum/index.php?topic=10948.0

I found you an intake for your car. and i guarantee you will be in a very exclusive club with it.

£250 for the HKS intake. (they retail at £500 http://dubtek.co.uk/index.php?main_page=product_info&cPath=11&products_id=237 ). I reckon if you offered him £225 he'd accept as well

There are some very good design features on this intake. Notice how smooth the bends are in the pipe, very smooth flow of air, also by going accross the top of the engine it means the heat effect on the piping on it will be massively reduced.

All the other intakes go around the back of the engine, right above the turbo and manifold, which is the hottest part of the engine. Add to that HKS filters are amogst the most highly rated in the tuning scene. You only hav to look at what most of these 1000hp skylines run. Supposably sounds awesome as well.

Edited 23 January, 201016 yr by vRSy

some of those DP bolts are a apain in the ass though arnt they.

How are you likeing the new burble. I thought it sounded really good. let us know how you get on with your new map then.

The burble is great, just as I imagined - subtle and not intrusive at all. Ben sent the Stage 2 on Saturday night. I have had a chance to get it on to the car and am very pleased with the result. I don't feel the same jump as I did going from stock to Stage 1 (as expected) but it is still a very noticeable and worthwhile improvement across the rev range. When first pulling out of my drive and changing up the gears, it wheelspinned in 3rd in the dry which was an interesting start! I also had fun at higher speeds/gears on the motorway where the torque is definitely there and how I hoped it would be as this would be the most useful for my day to day driving. I even had some jerk wind me up and take me on in an Audi TT; I am ashamed to say that I responded. I guess it was a TFSI as, in all honesty, I was toying with the guy much to his frustration

The only issue that I had was after giving it a bit of beans in 3rd when a CEL came on indicating that the post-cat O2 sensor had tripped out (PO139 PO140 codes). I guess it must have been momentarily as I cleared the code and it didn't come back during my commute in this morning. I was worried that the torque movement on the exhaust had pulled on the wire but not sure what happened now.

Apologies for going off-topic with my little story. OK, back on the topic of CAIs.....

@muckipup

I found you an intake for your car. and i guarantee you will be in a very exclusive club with it.

£250 for the HKS intake. (they retail at £500 http://dubtek.co.uk/index.php?main_page=product_info&cPath=11&products_id=237 ). I reckon if you offered him £225 he'd accept as well

Thanks for that. It looks sweet but even £225 is a lot of money for me at the moment when I am not sure what real benefit it would give over a second-hand Evoms or ITG. I still can't get over my point about 'inherent worth' of these things - its nice and shiney for sure but still a very expensive bit of tubing and foam! I'll need to check the bank bqalance and have a think about that one. :'(

when it comes to perfomance intakes its not just the increased volume of air that makes the difference.

One of the biggest improvments wil come from how quickly your car will be able to build up boost and more importantly hold that boost for a longer duration. coupled to that peak power wil be increased due to the increased volume of air at the top end.

as you can see from the graph below.

i still think £200-£225 is about what you could expect to get a second hand evoms for. I know there are a few guys flogging dbilias intake on SCN, but i wouldnt bother personnaly.

Glad to see you enjoyed your new map. any plans for some dyno activity or are you just happy to leave it as is.

That's a convincing point backed with a convincing graph! However, I wonder how boost pressure would relate to actual torque figures across the rev range also what the difference would be if compared with a performance panel filter instead of stock. I also wonder if a Stage 1/2 map would be calling for the same air requirement as the Stage 2+ shown????

It is early days with my Stage 2 and I have not fully played with it but am generally happy with how the car feels on the road at the moment. I will be at the JKM RR Day next month so will see how the dyno graph looks. Ben @ Shark tells me that it is essentally the same map as is on his car which made a little over 260 bhp although he had a CAI and full exhaust system I believe. If I can get reasonably close to that with a nice smooth curve, I will be happy.

http://www.mk5golfgti.co.uk/forum/index.php?topic=9988.0

@ muckipup. check this review of the twintake out. the guy has the 200ps gti, with revo stage 2 set on conservative settings(he had a turbo failure quite a while back), and like you he was really dubious about the improvements of an intake over his stock box. he didnt thionk the outlay was worth a minimal gain.

however he had the twintake fitted at JKM where they did before and after runs(same day) which resulted in 15HP gain.

remeber that is on conservative settings as well, so if boost was ramped up a bit more gains potentially could be had

Edited 25 January, 201016 yr by vRSy