Ever since installing my boost gauge I've been getting intermittant "Service Engine Soon" idiot lights. they usually clear after 5 restarts, but this time it's not going away. I had the code read and it listed a "mixture too lean" error condition in the area after the cat. I also have a Alta airbox MOD, but that's about it for performance MODs.

I had the light come on before and the dealer replaced an oxygen sensor - could this be the other one going bad perhaps? I'm still getting the same MPG as I always got and the car runs smooth and powerful, so I'm not cinvinced the error condition is actyally happening.

Just checking before I take the car in to the dealer and face the service writer.

Thanks!

 

Well I don't see how there's any way that at CAI would make your car run lean...its already rich as it is. If you can run a 17% pulley and not be lean I don't know whats going on there. Get the ECU checked out perhaps?

 

Perhaps... Just wondering if anyone else saw that issue with the CAI or after a boost gauge install. I'll schedule another warranty check on the oxy sensor I guess... thanks!