well i just did the b18a1 into my 90 hatch si... i have a ys1 trans and im kickin the code 9... i can rev all the way to 6... i have the si dizzy...and the pr4 ecu... it sputters in low rpms....and im stumped... my brother told me to put the pm6 in but when i did it sputtered worse... any help???