High idle and service engine soon light
 

This happened out of the blue. I started my car up and noticed the engine was revving high and the check engine was on. Normally the rpms go down after two or three minutes. I live in Germany so it's cold. I thought it might be dirty air filters. I have stillen gen3 intakes. I cleaned them up and reinstalled. Same thing. I also have stillen high flow cats. And a berk tech exhaust. Any advice?

I'm not an expert, but first get a code reader and tell us what the code is for. And maybe it's a vacuum line?

I'm going to do that later today.

Sub'd I hope its an easy fix.

This just happened to me yesterday. I scanned the car and it threw th code P0300 (misfire bla bla) Anyways, some time ago the car threw the code and the reason was because there was a gap between the Throttle and the intake. Now, yesterday's Code dissapeared after resetting the ECU.