Driven over a thousand miles mixed city/hwy driving on 5 tanks of gas and still no CEL. Used with catless downpipes. N63 engine. I made and error upon reinstalling the downpipe by not hooking up the MAP sensors and got a CEL initially, so I reset the light with my scanner and it never came back. I recommend these as they are pretty much plug and play without any adjustments, at least on my vehicle.
Driven over a thousand miles mixed city/hwy driving on 5 tanks of gas and still no CEL. Used with catless downpipes. N63 engine. I made and error upon reinstalling the downpipe by not hooking up the MAP sensors and got a CEL initially, so I reset the light with my scanner and it never came back. I recommend these as they are pretty much plug and play without any adjustments, at least on my vehicle.
I had problems with the kit. No check engine on. With my armsport downpipes the performance are everlasting. I love it.
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