I did a KO4 upgrade on my 99 A4 and a Unitronic chip. It worked super nice for few days with lots of power but after that, power went away and the shop that did the upgrade says that the ecu is telling the turbo not to boost. I am still in the limbo with this problem and I am starting to suspect that the unitronic chip sucks. please let me know if any ideas.

 

Please dont tripple post on the same subject. You wont get good help that way.
https://www.audiforums.com/fb.asp?m=520649
https://www.audiforums.com/fb.asp?m=520246

We at least need to see some fault codes stored by the ecu to help.

 

Are you the same person that posted a few days ago about the unitronics chip causing problems?


never mind onepoint just answered that before I could. lol

 

have you even checked for boost or vacuum leaks?

 

Yes I am the same from few days ago and yes my car has been chck for boost leaks

 

FAULT CODES?

 

Josh

 

whats the code for defective tuner?

 

P01D10T

 

i wonder how many people wont get that.