Pump gas to race gas gains are not minimal. What you gain overall from increasing compression and timing and running race gas is a huge increase in power from top to bottom. What does a pump gas 4mm Serval make, 85HP? My race gas 4mm Serval is at 100. 15HP is a very noticeable difference. You will especially feel it when you’re in the trails, where you need that grunt down low. The compression will shine there. There’s a fine line in compression for a drag motor. Yes, you want that RPM, but you also want the torque to get you out of the hole.