Hey guy wat's up. i have a 92 hb h22a but i have the stock exhust on it. the problem i having is the check engine light is saying map but i have change three map all ready, can the stock exhust cause that.

p.s it chocks from 1500- 2500 then its fine

 

check your timing for the chocking part. mine d15b vtec did the same thing and then it was fine around 3000 rpm brought it to the mechnic and they fixed it perfect now