I just did a 2000 B16A2 swap into my 99 Si I put stage 3 clutch and lightweight flywheel and performace cam gears... and it has stock B16 Header and my old Cat witch came from 99 Si... So after that I get a engine light on the error is the same each time it said Too Rich Fuel ( Bank 1 ) ... dose any one known how to fix this... do i need a new cat or header or both... i do have a Full back Cat on the car... help..