http://www.ecstuning.com/stage/n75-info.html

Looking to put this on my 01 A4 TQ. Anyone have experience with this?

 

Yes, i got about 3-4 psi more on the H valve. However, on the highway the car at partiall acceleration, under 5 psi, would throw the epc light and shut down every once in a while. This happened 10 times once, and then 1 time on either 275 mile trip i made. Its eratic, so i put my stock back on. You might want to try the level down, j or F which ever one it is. Then again im running ko4 programming, you might be in the clear.

 

i used the n75 j valve because the race valve doesn't always agree with the 01 a4's now i have the j valve plugged in but it doesn't do anything since i have a mbc

 

I wasn't aware that there are different models of the N75. Any places whre I can lookt/get them? Thanks for the replies.

 

They are all Audi parts so give the dealer a ring.