That seems pretty weak...I think thats the next thing i 'm gonna do..

 

Well I guess the other question is whether or not those #'s are SAE corrected. If they are, the 100 degree weather will be corrected to about 70 degree's. Usually SAE correction isn't off by more than 1 to 3%. If those #'s are uncorrected then the 100 degree day will be a huge factor. I would expected to have seen about 310 rwhp

 

Im thinkin these arent standard correction cuz guy was like... the heat killed you.. its bein doin it to most of the gas trucks today he was like expect a 10% gainin 60 degree weather.

 

monte.... it's not the cheapest route, but you may try installing the 6.1 30lb injecters. would probably help you out quite a bit.