B5 problem(please help)

[grkdude]

Hey guys this is my first time posting and thank you in advance for any responses..so my b5 s4 is stage 2 with a giac chipped ecu which I’ve heard is shitty..the problem is it has trouble building boost and sometimes holding boost.so at WOT it seems that it starts pulling and pulling but at any given moment throughout the rev range either that is 3,4,5 thousand Rpms and so on it falls on it’s face and struggles accelerating but sometimes it just rips through gears with no problem whatsoever and pulls haaard..also sometimes on rare occasions when at WOT traction control and abs lights come on..PLEASE help and sorry for the long post!!thanks

[African2.7T]

Have you changed out your throttle body boot..might have a rip in the underside.

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[JustManson]

Probably would get more hits if you reposted this in the B5 S4/RS4 Thread VS the classifieds....

Nothing to sell nothing to see.


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[VR4-S4]

Nothing wrong with GIAC.

Could be your EGT sensors.