[Phantom5oh]

Well your runs look pretty good. When I run mine I ALWAYS do it in 4th gear. The T5's have a 1 to 1 4th gear ratio, so it makes the numbers more accurate.

Did they put a sensor or probe into your exhaust? They should have. If they did then the dyno computer monitored the A/F ratio, it just didn't print out on the graph. Thats ok, you can always go back later and have them print it out for you. I don't have them print my A/F on the power graph. You might want to go back and see if they will print it out or you.

Having the heat on probably wouldn't hurt you. The heater draws heat from the coolant so it might have kept your engine temps lower making a little more power. But the heater fan doesn't draw much juice from the engine/alt. so you should be ok.

Where is your timing set at? You might want to check that, not just base timing, check total timing too. For some reason my base timing was ok but my total timing was like 10-15 degrees too much. I adjusted that in between runs and got almost 15 peak hp with an average gain of 10 hp. Not bad for 5 mins of work.

What size are the primaries on your headers? That could really kill low end if they are too big, same with the 2 1/2" exhaust. Could just be too big for your current combo like Dark Knight said.

Dark Knight is that graph with the AFR heads? Not bad for just a set of heads that says a lot for AFR!

Steve