06-01-2015, 01:49 PM
Gentlemen,
I currently have 3 different exhaust headers for my CB11. One of them is a stock header with the catalytic converter removed. If I install it will the reduction in back pressure screw up the way the bike runs or cause it to run lean or rich? Putting on the Staintune with it's straight through pipe reduced back pressure as the stock muffler has two 180 degree changes of direction and after that my CB still ran fine (maybe better). Will going the next step and eliminating the cat be too much and require a PCV or a reflash? Does the cat have so little back pressure that the bike wouldn't notice? Just looking at it I think that cat produces quite a bit of back pressure but I don't really know. Anybody have some experience here?
Chip
I currently have 3 different exhaust headers for my CB11. One of them is a stock header with the catalytic converter removed. If I install it will the reduction in back pressure screw up the way the bike runs or cause it to run lean or rich? Putting on the Staintune with it's straight through pipe reduced back pressure as the stock muffler has two 180 degree changes of direction and after that my CB still ran fine (maybe better). Will going the next step and eliminating the cat be too much and require a PCV or a reflash? Does the cat have so little back pressure that the bike wouldn't notice? Just looking at it I think that cat produces quite a bit of back pressure but I don't really know. Anybody have some experience here?
Chip