Well iv had problems with my leon cupra 03plate. I recently had it remapped and thats when the problems started. The way to describe it is to say, when im accelerating and im in 4th or 5th and get to about 5500rpm it jus loses all power and then surges then stops dead then surges again.it struggles to go over 120. Now iv changed the plugs,all 4 coilpacks, and yesterday changed the maf and reset the ecu and the
problem is stil there. Can anyone think wat it may be?im really really pissed with it all now.
As rob M said, check your TIP, i have had exactly the same as you happen to my LCR once, doing 100+ and there was nothing, the car just wouldnt pull, the airfilter sounded strange, like someone was trying to suffocate it, if that makes sence, i pulled over, checked pipes etc, and couldnt see a
problem, it carried on doing it, then in a moment of total anger decided that if the car was broken, i was gonna truely break it, and decided to pummel it from 1st all the way up, and as i changed 2-3, there was a loud pop noise from the airfilter (kinda like the noise you get when you ping you finger from inside you mouth) and then it just hit full boost and took off. On asking about TIP was the main thing that came up time and time again, i logged MAF etc on VAG com, and did checks, but there was nothing at all showing up. Never had the
problem again...oh and the boost guage read full boost whilst i was under load, and the car was under performing....Good luck
