An ecu is out of the question....500 isn't worth it on a 93. If I bump the timing will I feel a difference in low end? high? How much? Is 20BTC too far?

Mike S.

 

Do you have the FSM? There is more to adjusting the base ignition timing than turning the distributor. I believe you have to unplug the TPS and rev the engine about 3 times from 3k-4k to lock in base timing. Since stock is 15BTDC, I say try 17-19BTDC. For the SR20DE bumping the timing from stock 13-15BTDC to like 17-19BTDC nets around 3-6fwhp, but the SR20DE runs 15 BTDC on 87 octane. You should notice better throttle response with advanced timing.