I recently sold my db4 and got a 91 civic si. I swapped in a b16a with a pr3 ecu, correct me if i am wrong but isnt the redline for these engines 8200 cuz mine redlines at 7700 o and also what kind of headers can i put in this motor cuz i have searched and searched but yet see headers for 99-00 civic si.

 

your pr3 ecu is an automatic one. I have the same problem.

 

thanks for the info