I've been running the five port for two months now. I took it to Silver State and ran it in the truggy and the buggy. Since then, I've been running it hard everyweekend. I'm using the Dynamite .053 pipe and the p3 turbo plug. Today at Leisure Hours indoor track, I ran it in my buggy and got eight minutes of runtime running at 200 degrees. I'm using the 7mm restrictor. Right now, I'm at the two gallon mark on this engine. It still has good pinch. I'm very happy.