Discussing remapping of engines for economy and power

Thoughts and concerns. Benefits, know problems. How to do it, where to go!

First off does anybody have a remapped Octavia 2 TFSI VRS?

If so....at what stage? How much bhp? Have they incurred any problems? Do they like it? How was it done? Any modifications to the car beyond the remap?

GO!

Also has anyone got a remap for the VRS TFSI that i can try out?

Stage 1 on a TFSI you will see 230bhp - 235bhp.

Invariably your diverter valve will fail so you should replace with the revised version when you get your remap. Any tuner worth their salt that knows the tfsi engine will tell you that.

It will invalidate your warranty if the fault is attributable to the remap. Problem is proving a fault is or isn't attributable to a remap is difficult so the risk is if your dealer knows/determines your car is remapped you give then a reason to reject the warranty claim. Most tfsi cars will be out of warranty now anyway although a number will have the one year dealer warranty is purchased used.

There's loads of info on here about remaps so use the search. I had my tsi remapped when it was one day old and less than 150 miles and that ran fine for 18 months and 18k apart from the occasional CEL light and some fault codes that essentially pointed towards over fuelling when it was low external temperature which is not an uncommon problem I believe.

Stage 1 on a TFSI you will see 230bhp - 235bhp.

Invariably your diverter valve will fail so you should replace with the revised version when you get your remap. Any tuner worth their salt that knows the tfsi engine will tell you that.

It will invalidate your warranty if the fault is attributable to the remap. Problem is proving a fault is or isn't attributable to a remap is difficult so the risk is if your dealer knows/determines your car is remapped you give then a reason to reject the warranty claim. Most tfsi cars will be out of warranty now anyway although a number will have the one year dealer warranty is purchased used.

how do you know it will instantly fail??, there are a few on here with the original diverter valve me included as the updated one failed so put my old one back in.

As to invalidating any kind of warranty... yes i totally agree there.. i should know lmao, although my clutch was iffy from the start but i've gave up arguing with them.

CONS: Insurance and warranty...

Insurance - check how much the increase will be before you have the remap. For some insurers, up to 20% is not that bad, so you may want to keep it below this.

Warranty - you will void your warranty. Sometimes, the mapper will offer what appears to be a kind of 'Gap Warranty' - covering what Skoda won't, but this often doesn't work. Each will say the other should cover any problem.

how do you know it will instantly fail??, there are a few on here with the original diverter valve me included as the updated one failed so put my old one back in.

As to invalidating any kind of warranty... yes i totally agree there.. i should know lmao, although my clutch was iffy from the start but i've gave up arguing with them.

Your DV shouldn't instantly fail. IIRC, the 2007-2010 MY 2.0TSI/TFSI vehicles came with a diaphragm-based DV that works fine for OEM or Stage 1 power levels, BUT as Jonno stated, it's worthwhile to simply update to the Revision D OEM diverter valve at minimum. This is a cheap part and will last you well into the 500+bhp power levels

Clutch is usually fine unless you rag on it constantly. Once you get to stage 2 or K04 power levels the torque will certainly show any clutch weakness.

Although it technically does void your warranty (on the ECU only), after hundreds of thousands of flashes, I haven't seen any of our customers having warranty problems with a stage 1 remap--especially with the ability to switch back to a stock map. And if you were to run into some extraneous circumstance at the dealership, we are always here to help our customers out as best we can.

Hope this helps!

how do you know it will instantly fail??, there are a few on here with the original diverter valve me included as the updated one failed so put my old one back in.

As to invalidating any kind of warranty... yes i totally agree there.. i should know lmao, although my clutch was iffy from the start but i've gave up arguing with them.

Read what I actually wrote. I said 'invariably' not 'instantly'.

Cheers all for your contributions....

Some good all round opinions and ideas worth considering..

I have no warranty so that is a green light anyway, however I would like the option to reinstall the stock as part of the course..

My clutch/flywheel still feels strong and responsive so I am hoping that it will hold up with the extra strain should I choose for a remap..

I have seen some remaps for 265 without even adding any extra equipment...that to me is too much..I think 240 is my limit...

As for the inverter valve..how easy/hard is this to change??

My main concern is the rear brakes I have a early 2006 model as such must have the earlier pre-revised brake setup......however I have searched high and low for an upgrade....assuming I've not had one already of cause..

The car is fast approaching 64k it has mainly seen A-road/Motorway miles for most of its ownership, been service as per intervals by Skoda, just had major service and its belt and water pump replaced......Everything still running sweet and getting good economy so I will be honest the remap or is more curiosity...

Cheers for the posts guys..

Just looked about the diverter valve...have just bought a brand new D one for £40 sovs and might just fit it on anyway....least I know regardless of remap or not I have an updated version....obviously I will keep my old one if there ain't nothing wrong with it

Red TFSI VRS 18" alloys 64K FSSH recent major service/cam belt/water pump change......

Mine is close to yours in age - an 06 plate TFSI wit just a tad under 80k on the clock. Everything except the remap and a new diverter valve is as standard, and so far no issues other than the turbo has an intermittent fault (something in the charge pressure regulator system is sticking perhaps) which loses around 5-10bhp at max. Like you, I have no warranty, mine is insured with Green Light including Business Class II and the remap was an extra £30 a year on my premium so a no brainer.

The transmission has been fine, and the brakes are OK too, though unless you are going to actually drive at higher speed than before then I can't see why you'd worry about them. The remap means you just get to speed much much quicker, and your front tyres won't last much beyond 10k either if you like using the additional effect a lot.

Thanks for responses. I have had VMaxx Stage 1 remap done so now at 240ps! New revised D type diverter valve fitted and got a new k&n performance filter on the way to. Currently running on 95 Ron but have noticed the difference especially in the middle revs!!

I noticed a slight more response when I had the new diverter valve fitted prior to the remap and also bizarrely I used to get hesitation when starting from cold but that appears to have disappeared :/

Insurance is going to he sorted shortly

I wouldnt count on any MPG increase. I have neve witnessed this on any car ive remapped. It wont get worse but certainly no measurable improvement.

I wouldnt count on any MPG increase. I have neve witnessed this on any car ive remapped. It wont get worse but certainly no measurable improvement.

The laws of thermodynamics dictate that it could be a lot worse, if you drive it to its' new potential. That increased brake and tyre wear has to be paid for somehow....