XSQRD

i've been waiting for 2003 225. . . another two weeks

S4iscool

good luck, dont they need to do the 03 code first? before they figure out the 225's?

RATTRACING

The dip can sometimes be explained by that the intercooler is to small and since the turbopressure is at its peak around 4000 the air/fuel mixture gets to hot in the cylinder and ignites. I dont know the english word for it. The sensors in the car detects this and automatically lowers the turbo pressure.

S4iscool

still, shoudnt be happening. Many codes out there that run stock smooth with the added boost

AudiTTed

"It may also be a faulty N75 valve. MAF's can fail in a years
times and the DV, if not cleaned and lubricated can also fail."

So Now I'm off to have the stock DV put back in to test. If not the DV how do I test the MAF? What about the N75 valve? Does having a chip bring out problems that are not noticible until full power. Using the same principle with audio, you can't really hear the imperfections of a copied CD until you put it into a car with an amplified system.

S4iscool

yes