Originally Posted by M.Bonanni

You have to just look at it as two separate independent tests. The temperature made a huge difference since it was probably 50 degrees in Feb. and 112 in August. I tried to make it as accurate as possible by doing a new baseline dyno before adding the exhaust so we have something to compare to and measure actual gains in similar conditions. So as far as gains go, the numbers should be pretty accurate. As far as overall peak horsepower numbers go, the temperature difference had a big impact. My peak numbers with the Berk HFCs back in February was 299whp. Power wise, nothing on the car changed between that dyno and the baseline I did in August, but the baseline in August was only 282whp average. So basically the only thing the temperature effected was the peak numbers, not the gains since both tests were done back to back with baseline numbers.