Originally Posted by x'ed
man hobbyman you are frustrating. first of all the link says "clubrsx", so where do you get rx8. second, the power drops off at the end because the car has redlined. third, these are dyno runs, not flash runs. whp means power rated at the wheels, not the crank. the show your talking about is probably doing crank horsepower. fact is, its well known that certain cars take to intakes very well. like i said, you dont make 10whp(12 hp to the crank) all the way across the power band but maybe for 5-800rpms. the 11whp gain i showed you would have been at the "peak" gain. there are other cars dyno's i could show you to prove my point, like bullseye said with the cobra and the old b series hondas that got up to 13whp from intakes, but i get tired of arguing with people who dont show me anything empirical as i have done.
Sorry, you mentioned the rx8 and I assumed (my fault, I didn't actually look at the site, just the graph) thats the car you were discussing. You are quite correct that the graph shows those numbers, but Please bear with me. If you look at the blue line (the one that shows 186HP) you'll see the hp fall and then rise sharply and then fall again. That is a flash reading. It means the driver backed off slightly and then floored it. When you do that you can FLASH a higher number than the car will sustain at full throttle. The proof of what I'm saying is on the same graph. The other runs do not show a drop and then a sharp peak, but a steady gain until peak Hp and then a gradual drop. Not to beat it to death (afraid I already have) but the actual HP gain is an average of the runs, not the best one. Thats not my idea, that is the rule for all testing. Actually the show I metioned is doing the runs with a Chassis dyno. I may have mislead you by saying a stock RSX-S because it turns out the car was chipped and had some other minor mods Hondata and a exhaust I think. It really doesn't matter because the baseline being higer would only tend to make the gain greater, not less.