Quote:
Originally Posted by loweredram
Hate to bring this thread up again. Has anyone found an answer yet? I was running cobb OTS e30 with FBO catted downpipes and one day I decided to check codes and up pop the 29E0 and 29E1 code. Sometimes i get the ses but car runs fine. I switched back to straight 91 and cobb stage 2 +fmic sport and Im still getting them. I installed the updated injectors, new plugs, and coils about a year ago but never had codes until a few months after running e85. I was thinking the pre cat o2 sensors since I haven't changed them yet and they are factory originals(my car is an 07 61k).
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I've been having similar issues. Just flashed E30 from PTF now that we have warm weather again. First day while adaptations are readjusting I saw multiple 29e0 codes, a few 29e1. And then one p0171 (lean) which tripped the SES light. Next day fewer codes. Yesterday and today none. Also my STFTs are pegging 34 during WOT (same on 93 using my PTF map). No misfires - ever. No other codes except for once a year fuel pump plausibility code. Otherwise car feels fine. Anybody have ideas what's going on? O2 sensors?