im installing high compression pistons on my b20 setup..... the head already has stage 2 brian crower n/a camshafts..... but my question is after piston instalation should i advance timing or leave timing all stock..... thanks

 

You should take it to a tuner and have it tuned. Was it previously tuned?

Keep in mind you will have to go from 87 to 91+ octane for this compression.

I would retard your timing ~1-2 deg until you have the engine tuned.

 

well i have already tuned it... i kept stock timing and my arf around 13s and high 12s it dyno at 138hp and 145lbs of torque with a type r tranny... my setup is in a 93 fully interior civic hatch with a/c and it hit at the track with a 14.32 at da 1/4 mile.... so im thinking after installing pistons and a retune maybe high 13s but i dont know whats really going to happen....... any suggestions? ......... thanks again for ur addvise