2000 Si with Intake/Header/Cat/Exhaust.

Put on dyno and it was kinda leveling out around 7/7.5k rpms we are going to see what is up with the air/ fuel with a scan tool just need to locate the port for obdII tuning. same for clearing codes I believe. Also what is the Stock compression in the Si? It is seeming to be "pig fat" on the top-end just doing some tuning before we take it any further, untill I get a response I will be doing preventive maintenance plugs, wires, etc.

Thanks

 

stock cr should be from the factory about 10.4:1

 

in PSI not ratio, thanks though

 

actually comp. on usdm is 10.2 and about 215/225 psi's