Hello, I just recieved my Speed Tuning ECU for my 99 A6 2.8. alas it causes a check engine light, when I swap in my old ECU the light goes away. Can anyone give me some tips on how to go about fixing this? thanks, Rodel
+1 on what Upstate said. Then once you have the codes you should contact your vendior for support. I mean heck, this is a brand spanking new device so they should have the knowledge to help you.
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Gilles & Kathy Quattro... because I like it on all 4 Unofficial SoCal Crew member 05 Dark Graphite BMW K1200LT 05 Audi A4 3.0 (For sale) 00 Audi A6 2.7T (Spare bike) 03 Saab Convertible (Other spare bi