Sent me the one you're talking about, but I'm thinking it overly rich. Theres one in the list of hex files from tuneECU site (20220) that is listed as no cat stock pipe but it doesnt figure in any change in air coming in and I'd prefer to keep the K&N over going back to a disposable filter. As is, between 1900 and 1100 rpm's on decel it sounds like someone is having to much fun with a shotgun, It also feels anemic when throttling in that range unless you really roll the wrist. Below 1100 it pulls like a tractor and above 1900 it stretches your arms. Dougl has convinced me the tune for triple K&N's wont work for me.