Gc8 problem

M

matt1010

Octane Boostaholics
Lads iv recently fitted a de-cat back on to my car all went fine and everything is where it's suppose to be, my problem is when I'm driving hard and the car reaches around 120kmph it completely backs off and then the power kicks back in again, I have checked all the vacuum lines and I'm nearly certain that there all ok, is there any thing else that I could be missing.
The lambda sensor is also connected

I had a de-cat on it before and no problems, all so got a new rad installed but doubt that has anything to do with it.

It's doin my head in, the car is running perfect other then that
 
Sounds like fuel cut

Fuel pump could be on the way out
 
Could be several things -- 1) over boost resulting in the ECU cutting power, 2) could be fuel pump on way out, 3) could be knock sensor detecting knock and ECU pulling timing... etc.

When did you last have the de-cat on it - and was it mapped for it?
If wasn't mapped for the de-cat then could be 1 or 3 above, and same if was some time ago and was mapped for better fuel at the time and running RON95 now.

No matter which of the above, you have a high risk of engine damage if you don't sort it so would get some data logging done on it to see if you can narrow down the issue and get it sorted.
 
De-cat was on the car about 5 weeks ago, there were no problems then. Is the ECU after resetting?

When did you last have the de-cat on it - and was it mapped for it?
If wasn't mapped for the de-cat then could be 1 or 3 above, and same if was some time ago and was mapped for better fuel at the time and running RON95 now.

No matter which of the above, you have a high risk of engine damage if you don't sort it so would get some data logging done on it to see if you can narrow down the issue and get it sorted.[/QUOTE]
 
You must log in or register to reply here.
Back
Top