I change my exhust manifold out for a header pipe because it was cheaper. works great except for the check engine light that says right bank failure which relates to the lower o2 sensor being out or spec.

can anyone here offer a fix or know of a easy way to make the adjustment so the computer is happy.

 

there is the no fouler trick. go to the auto parts store and get some spark plug no foulers, you will need two, and a half inch drill bit. tap one of them out with the half inch bit and screw the lower o2 sensor into that. screw both of those into the other no fouler, which hasn't been drilled out, and screw that whole assembly back into the sensor bung. plug it all back in and clear the code. there shouldn't be a problem with codes after that.

 

thanks read up on that in a honda forum with pic loks like it works sounds good in principle

 

that's what I did on my protege and it worked just fine.