Hey everyone, well a friend of mine is having a problem with his S4 TII, (Unique TII's old ride) Anways, we put his T.P.S. in range, it's where it's supposed to be, but when he is at the top of 3rd and/or 4th it shutters, it jumps back, like what I imagine fuel cut would feel like, i'm used to S5 TII so i'm not too sure about S4, it does this about 3 times before he will shift into 4th, then midway or top of 4th it deos it again a couple times, 1st and 2nd don't do this at all. Any ideas???

What ECU is being run in the car? This will help some of us to determine what may be wrong

What boost? Is he watching at what boost it does that? Is there a FCD installed?



C

it's possible to be fuel cut, because your car is under more load in 3rd and 4th, and his boost could be creeping

we're gonna need a mod/part list so we know what the hell is going on. it sure sounds like a boost control/creep issue