I put a piston in my engine because I hurt the old one. While it was apart I cleaned up ports and raised exhaust 1 mm. After alot of thought and questions I decided it was a mild change so I did it. Engine now runs great from mid to top but has a little less torque (feels pipey). This was expected. My question is which is the best way to get back a little torque. I have a few things in mind, timing advance is in the right direction. I'm not sure if milling head will do anything. Basic stuff here. I dont want to mess stuff up so a real engine builder has nothing to work with when I send them these parts to trick out.
