Has anyone had trouble with check engine lights while running a DOS CAI and Invidia exhaust? The dealer is saying it's coming back to an O2 sensor code which they replaced last week but saying it's due to the CAI and exhaust. However I've not had any issues while I've been driving it with check engine lights coming on. I believe I've read every post on here in regards to the CAI and Invidia and don't recall seeing check engine lights being an issue with either product.

 

Can't be due to the exhaust unless it includes a new downpipe. The DoS CAI might be an issue due to its interaction with the MAF. I doubt very much the DoS would, assuming correct installation, be throwing a CEL. Thus, I suspect the issue lies with incorrect installation of the DoS intake.

 

Thanks, but the intake has been re-installed since early spring with no issues.