Diablosport Forums

Hey guys, I recently installed a k&n cai, and ever since then I have had a running rich engine. I’ve tried the jammer CAI tune and it still runs rich. I took it to the shop and they said to take off the cold air intake. I was wondering if there was a way to tune it, and if anyone else has had this issue. Thank you

well, I've gotta ask, what makes you believe its running rich?
It will always use O2 feedback at idle/part throttle to get to 14.4:1 or so, and if it couldn't trim enough to get there, you would indeed get rich codes.
Also, what vehicle is it?