Strange Acceleration Problem - Golf GTI

[xristo]

Hi guys, ive had my MKV 06 GTI for approx 2 months now, and for one month i have been running the GIAC ECU upgrade. All was fine until yesterday when the power after 2000rpm abruptly cuts out and the car begins to shudder violently. The engine warning light also flashed up.

The car is now undriveable over 2000rpm, but fine under that. Im guessing it could be a turbo issue? Has anyone heard of this before?

Thanks
Christos

[bazzle]

Have you contacted suppler?

Bazzle

[CatonaPC©]

Is there any way to disable the ECU upgrade and try it that way?

[Big Yellow]

speak to Lucas, he will sort it out.

could be a boost leak/DV problem

[PASHN8]

Agreed with big yellow, a boost/vacuum leak will cut all fun as soon as you transition from vacuum into boost.

Also could be a coilpack misfiring under boost? Best to take it to a specialist that you are comfortable with if troubleshooting isn't your thing!

[Guy_H]

Switch it into stock mode, that will help you work it out really quickly (if it does it in both modes or only chipped mode)

[G-rig]

Hi guys, ive had my MKV 06 GTI for approx 2 months now, and for one month i have been running the GIAC ECU upgrade. All was fine until yesterday when the power after 2000rpm abruptly cuts out and the car begins to shudder violently. The engine warning light also flashed up.

The car is now undriveable over 2000rpm, but fine under that. Im guessing it could be a turbo issue? Has anyone heard of this before?

Thanks
Christos

Hopefully something simple like the DV. Agreed, contact the person who installed it.

speak to Lucas, he will sort it out.

could be a boost leak/DV problem

Has he fixed the Pirelli's yet?

[Big Yellow]

Hopefully something simple like the DV. Agreed, contact the person who installed it.




Has he fixed the Pirelli's yet?

Paolo hasnt reported any issues since he had his head cleaned.

and the thing with Pirellis is hardware related, even Kosi confirmed it with VW. Overseas they are trying to get a recall going, doubt we will see it here though.

[Maverick]

Paolo hasnt reported any issues since he had his head cleaned.

and the thing with Pirellis is hardware related, even Kosi confirmed it with VW. Overseas they are trying to get a recall going, doubt we will see it here though.

How is it a hardware problem? And why would VW recall the car when it runs fine in stock mode but has problems with some tuners when remapped?

Tuner A and tuner B both release maps for the same car.

Tuner A and tuner B both have customers with the same problems under the same conditions.

Tuner A accepts there is an issue, works on the problem, identifies the problem and after extensive testing releases an updated set of maps that fixes the problem.

Tuner B denies there is a problem with their maps and claims it's a hardware problem.

Do you understand now why I ask how it is a hardware problem and if the problem has been determined to be hardware specifically what piece of hardware is the problem (because if the problem has been properly investigated the component(s) would have to have been identified).

[Big Yellow]

How is it a hardware problem? And why would VW recall the car when it runs fine in stock mode but has problems with some tuners when remapped?

Tuner A and tuner B both release maps for the same car.

Tuner A and tuner B both have customers with the same problems under the same conditions.

Tuner A accepts there is an issue, works on the problem, identifies the problem and after extensive testing releases an updated set of maps that fixes the problem.

Tuner B denies there is a problem with their maps and claims it's a hardware problem.

Do you understand now why I ask how it is a hardware problem and if the problem has been determined to be hardware specifically what piece of hardware is the problem (because if the problem has been properly investigated the component(s) would have to have been identified).

valve springs,

and stay on topic mav.

[G-rig]

Well if it doesn't do it in stock mode, I don't see how it's VW's fault or how you'd get a sucessful recall happening.

[Tim]

If you guys want to start a thread to debate Pirelli problems then perhaps you can do that. I dont see how youre helping the OP by instigating another chip war.

Back to the original problem. The car was running fine for 2 months and now its not. Something has broken on the car. I think that is clear. As mentioned above hopefully its just a DV as they are a common point of failure.

[CatonaPC©]

I'm sorry, I must say I am noticing some trend here and with all due respect to the OP. You had the car one month before you chipped it. It's reasonable to assume it's the GIAC. Not necessarily hardware.

If you 'chip' it you must accept the risks. As we are constantly reminded in this forum and others, these cars are sophisticated pieces of electronic engineering and toying with it can lead to consequences. Even hardware damage. It's called "cause and effect".

[Big Yellow]

I'm sorry, I must say I am noticing some trend here and with all due respect to the OP. You had the car one month before you chipped it. It's reasonable to assume it's the GIAC. Not necessarily hardware.

If you 'chip' it you must accept the risks. As we are constantly reminded in this forum and others, these cars are sophisticated pieces of electronic engineering and toying with it can lead to consequences. Even hardware damage. It's called "cause and effect".

first off, his car is an 06 and the car was running fine chipped. what is to say that his DV is not worn and having extra boost has caused it to fail. the DVs have been know to fail on these cars overtime.

and what is this trend you are seeing??

[G-rig]

So why doesn't he test to see if it happens in stock mode, then check/replace the DV then go from there? Before replacing dv's, coil packs and other stuff.