| Re: Air Flow Research (AFR) 195's VS Trick Flow Specialties (TFS) 195's - Test within |
Subject: Re: Air Flow Research (AFR) 195's VS Trick Flow Specialties (TFS) 195's - Test within by Josh on 2009/9/1 0:09:58 I dyno'd the car today with the AFR heads. It made 414 RWHP and 396 RWTQ. Here's the chart with the AFR heads in red and the TFS heads in blue:  The AFR heads made more power everywhere in the RPM band, and 25 more RWHP at peak. Draw your own conclusions as to the value of the heads, but I'm pretty pleased with the results. I think we all thought the AFR heads would make more power, but here's the results. Same dyno, same car, as close as I could make the tests. Tuning didn't change very much. The AFR heads seemed more tolerant of timing and fuel changes without swings in power. For example, I leaned it out all the way to 14.0 and didn't pick up any power. I also ran the timing all the way to 38 knock without knock, but it didn't make any more power there than it did at 32 degrees. Right now, it is about 13.5:1 (measured at the tail pipe) and 32 degrees of timing. There was less than 1 RWHP difference between this tune and 14.0:1 and 38 degrees of timing. All in all, both heads performed admirably. The AFR is clearly the winner on power production, and with the cost of the mods to the TFS heads the AFR heads also won in the dollar per HP category. Thanks for all the forum support. |
