S33TNS
Guest
I have a 2004 Leon cupra. It has a missfire/stutter.
-From cold, it sometimes runs rough. It stutters at low speeds/revs, but when you put your foot down, it's fine.
-It also sometimes "pushes" you at slow speeds when warm then drops off. A fraction of a second. Then sometimes does the opposite and when your accelerating gently, drops off but doesn't loose power! The dump valve dumps at this point. It's like the turbo starts to boost and then changes its mind.
I thought it may be a throttle problem, but when it does it, it doesn't loose any revs according to the rev counter.
I have replaced the N75 valve, to no avail.
It throws up no normal managment codes.
It did it before the dump valve was fitted.
I have NO boost gauge fitted.
It is not down on power at all.
It has not been re-mapped.
Thanks in advance.
-From cold, it sometimes runs rough. It stutters at low speeds/revs, but when you put your foot down, it's fine.
-It also sometimes "pushes" you at slow speeds when warm then drops off. A fraction of a second. Then sometimes does the opposite and when your accelerating gently, drops off but doesn't loose power! The dump valve dumps at this point. It's like the turbo starts to boost and then changes its mind.
I thought it may be a throttle problem, but when it does it, it doesn't loose any revs according to the rev counter.
I have replaced the N75 valve, to no avail.
It throws up no normal managment codes.
It did it before the dump valve was fitted.
I have NO boost gauge fitted.
It is not down on power at all.
It has not been re-mapped.
Thanks in advance.