11bdad
Member
Bought a new 2010 FXDC which ran as expected.
1. Added XIED's. Ran fine, lower temps, no decel popping.
2. Added Rush Slash Cut slip on's (1.75 baffle) Runs great, sounds great, but decel popping (not horrible, but noticeable).
3. Disconnected XIED's. Same as above, but with less decel popping.
Why is the decel popping more pronounced with the XIED's? I've gone from the lean factory AFR (14.7:1) to a richer AFR (13.8:1). There are no exhaust leaks. I cranked the bike up in my garage with the lights off, covered the headlight with a towel, and went over the entire exhaust system with a big smoking cigar and a flashlight. Had a buddy working the throttle, and there are no leaks. I've already resigned myself to the fact that I'll need another AC and some type of tune. Is a 13.8:1 AFR still too lean in closed loop?
Thanks
1. Added XIED's. Ran fine, lower temps, no decel popping.
2. Added Rush Slash Cut slip on's (1.75 baffle) Runs great, sounds great, but decel popping (not horrible, but noticeable).
3. Disconnected XIED's. Same as above, but with less decel popping.
Why is the decel popping more pronounced with the XIED's? I've gone from the lean factory AFR (14.7:1) to a richer AFR (13.8:1). There are no exhaust leaks. I cranked the bike up in my garage with the lights off, covered the headlight with a towel, and went over the entire exhaust system with a big smoking cigar and a flashlight. Had a buddy working the throttle, and there are no leaks. I've already resigned myself to the fact that I'll need another AC and some type of tune. Is a 13.8:1 AFR still too lean in closed loop?
Thanks