I installed the stillen gen 3 cold air intakes about 2 months ago. Car has been running flawlessly until a few weeks ago. First encounter was in the morning coming out to my car, starting and then the rpm's just dropped and car stalled while I had car in first gear but clutch depressed. Started it back up and stalled again.

Now on two different occasions pulling up to a red light and putting the car in neutral and sitting doing nothing, the rpms bounce and if I didn't catch it in time it stalled on me.

Any suggestions of what it can possibly be?

-P.S. I did not get a tune after the install of the intake. I was wondering if that may be the problem but I have read of many people installing the intakes and never doing a tune.

Thanks in advance

 

Might be dirty MAF sensors, would be quick and easy to clean them up with some MAF cleaner. If that doesn't do it maybe something throttle body related. I'd start with the MAF's first.