Anyone upgraded the turbo on a Mk 1 VRS? Would like advice on turbo upgrade if anyone has done it to their VRS.

a few of us have, depends on what you want to spend and how much power you want

Hi,

It will all depend on what your budget is. I wouldn't bother with the KO4 turbo conversion as it only offers a very small amount more than the stock KO3s.

Your options are either Garret or IHI. Both will easily put you into the 300's (bhp & ibs/ft torque), you will however have to address other items (if you haven't already) such as the: clutch, brakes, suspension, possibly the gearbox, FMIC, etc. etc. etc...... This is when it can get expensive, trust me I've done the lot!!!!!!

Has anybody tried a VF30 on an Octy ?

As i still have one that i bought for my Impreza.

Obviously exhaust side would need changed to fit...but i forgot i had it.

no one has tried that yet, the only bigger turbo's fitted have been the Jabba IHI kit and a small selection of garrets(ATP eliminator/gt28/gt30 and possibly a gt35) as far as i know.

the power level your looking for can make a massive difference to the money you need to spend, for example if you are happy with arond 300-330 then you should be able to get away with leaving the internals/gearbox/diff alone and only do the turbo/manifold/exhaust/fmic/boost pipes/injectors/airbox/maf/map for the power but you should also be looking at brakes and suspension for this sort of power level.

however if you either drive like the devel or want more power then you should be considering an LSD, 6 speed gearbox(for strength rather than ratios), rods, pistons, valves etc but in my opinion having over 300bhp in a FWD car is a complete waste of time as you can only use the full potential in a dead straight line at 70mph+ otherwise you just wheel spin and thats in the dry.

If your wanting crazy power, say 400bhp or so then get a different car, either RWD or 4WD that can cope with the power better. some of us have started out with a 4x4 octavia and they can cope with the power a lot better than the FWD equivelents, some with the 4x4's are running 330-400bhp ish and you can actuall use the power coming out of corners and at low speeds as they simply grip and go

the best bang for buck though will always be a simple re-map as this will get you a realistic 230bhp for around £400 where as to hit the 300bhp mark your looking at 3-5k depending on where you go and what you get.

I may consider an upgrade soon, i've poured enough money in the past on cars. I'm happy enough with my measly 230bhp at the moment. But i know i'll be looking for more soon.

But reliability is my main factor if i were to go further.

Like many others though, i'd just go straight for Jabbas IHI job...saves messing around.

It was just a thought with me having the VF30 lying.

It got me just over the 300 on my impreza.

i was planning on using a GT2871RS on our car soon. anyone had/heard much on this turbo? Just seems to fit the bill nicely and for sensible cash (from the US)

I have everything else in place except brakes and FMIC but these are on order

Regards

Garry

i was planning on using a GT2871RS on our car soon. anyone had/heard much on this turbo? Just seems to fit the bill nicely and for sensible cash (from the US)

I have everything else in place except brakes and FMIC but these are on order

Regards

Garry

MMmmmmmmm:rolleyes: Thats what i have on my 2nd Vrs:cool:

New owner of the "beast"

Phil

heres a questions thats puzzled me for a while - what exactly is a hybrid turbo? Is it a standard turbo with the guts changed for more efficient ones but still keeping the original fitting to the manifold and exhaust .

If this is so what are the pro's and con's to this and whats the power increase like and the cost . I've probably got this all wrong but an explanation would be this .

Thanks in advance .

isn't a hybrid turbo just a turbo that's been altered in some way?

The thing with the big turbo is that whilst some might only offer an extra 70-80bhp it is the way it is delivered and the extra torque that goes along with it that really makes the difference. You'll have the ability to hold 300+ hp to just over 6k if set up properly too:D Most tuned KO3s that chuck out 240bhp are only a fraction of that by 5k due to the heat soak etc.

MMmmmmmmm:rolleyes: Thats what i have on my 2nd Vrs:cool:

New owner of the "beast"

Phil

Second vRS now when did that happen?

yup, a hybrib turbo is simply a turbo that has been altered in some way or another from the standard spec be it cut fins, different housing, different core etc so there is no specifcs on cost/pro's/cons/power/reliability except on a certain turbo with certain mods.

if your going for a gt2871r(commonly known as the gt28rs) and want to make full use of its potential then your going to need new rods, pistons, possibly valves, diff, clutch, flywheel and a big wad of cash

yup, a hybrib turbo is simply a turbo that has been altered in some way or another from the standard spec be it cut fins, different housing, different core etc so there is no specifcs on cost/pro's/cons/power/reliability except on a certain turbo with certain mods.

if your going for a gt2871r(commonly known as the gt28rs) and want to make full use of its potential then your going to need new rods, pistons, possibly valves, diff, clutch, flywheel and a big wad of cash

Sweet, cheers for that. Im lucky enough to work for Piper Cams and Exhausts so getting engine components is no worries. I got plenty of contacts at Arrow for Rods, Wossner for Pistons, Paul Ivey for valves etc... I got a Spec clutch and single mass flywheel already so just need the internals and im set. Yeah, Quaife ATB is on the cards already. Will get my brakes fitted first lol.

Only problem i can see is in the big wad of cash...mmmm....

What sort of Compression ratio should i be running if going for 350ish BHP. Is STD okay or should it need to be altered? I would be tempted to raise it if anything to help reduce the lag but not sure if STD ecu is good enough for this.

Thanks for the advise.

Kind Regards

Garry

can't help on the CR sorry but you should consider the 6 speed gearbox rather than just changing the diff in the 5 speed as the 6 speed is a lot lot stronger. admitidly mines 4WD and gets abuse but i have now broken two 5 speed boxes and a few others with half decent power have broken 5 speeds and have ended up going for the 6 speed. they have more shafts and things inside apparently so can take a lot more abuse, the 6 speed on LCR is what you'd fit and is the same gearbox mechanically as the diesels but with different ratios so if they can easily cope with the 400lbft+ of the tuned diesels then i think we should be fine

How come none of you guys are checking out the JBS04 from JBS Autodesigns. It is a fantastic bolt on upgrade if you need only 300 horses and really reliable too.

Call Mike @ 44 1246 455005 for details. They also have a lot of other turbo upgrades.

Check out JBS Auto Designs-Performance VAG Specialists-VW AUDI SEAT SKODA-Chesterfield UK

Rgds,

Peter

6K!!!!!!! thats not good value my friend, i know someone that spent half that for the same sort of power

wouldn't £6k get you a full IHI?

either yes or nearly i think

wouldn't £6k get you a full IHI?

6k would get you a full IHI, and that would from a standard engine too! If your car has been modded already i.e. FMIC and a decent intake system/cat back exhaust system (2.5" minimum) DV, this would save you 1.5k off that 6k price tag, but you'd still have to pay for the 3"d/p, injectors, various oversized inlet/outlet pipes, exhaust manifold, turbo, oil lines, boost controller, fitting costs etc. etc. etc. As well as any upgrades to the chassis i.e. suspension, brakes and transmission.....

What sort of Compression ratio should i be running if going for 350ish BHP. Is STD okay or should it need to be altered? I would be tempted to raise it if anything to help reduce the lag but not sure if STD ecu is good enough for this.

Standard comp of 9.5:1 is too high really.

The Audi S3 or TT (225bhp) pistons would be ideal at 8.9:1, this would be the cheap and very reliable option

However, whilst going to the trouble of fitting these it would also be worth considering making it up to a 1.9 for the added torque.....worth a thought. Thats the route i'm taking:thumbup:

Would this IHI Turbo be any good?

that's no good with out major work if im not mistaken

you would still need new manifold, downpipe, boost pipes, oil lines, water lines etc