Quote:
Originally Posted by Jordo!
It took a while for my buddy who tuned my car to make significant gains -- we had a few logical hypotheses about where and what to change, but even then, there is still trial and error.
I think the TSM absolute values are a bit high (CF's of 1.03 - 1.05), but the overall proportionate change is awfully encouraging.
I can only imagine larger primaries, lots of porting, and maybe some pretty oval velocity stacks on the intakes are involved plus lots and lots of playing with VVEL.
In short: massage everything so it improves flow and then step-by-step experiment with VVEL to optimize valve timing.
The limits of space under the hood can be worked around to some extent -- on my old Celica we had to chop out a bit of the hood frame to make a little extra room for an intercooler core -- but we still aren't really clear on what exactly was done on the test car, at least last I checked.
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Correct me if I'm wrong but correction factor is automatic and only has to do with correcting back to the target temp and humidity etc. In SAE the dyno pretends its really like 77 degrees I believe. If its 85 in the dyno room it's just calculating back to 77 which is why uncorrected is always lowest since it's the true number and was a hotter run calculation. Unless of course its 30 degrees in the dyno room, then uncorrected should be higher than SAE since it will drop power since at 77 a car should make less power than at 30. In std the target is like 66 degrees which is why it always reads higher, a cooler day would produce more power. If 100% is 77 degrees then the 0.05% you're seeing is just getting the uncorrected number back to what it would be IF it was 77 and perfect conditions in the dyno room. I believe this is why dynojets are so accurate when someone in the desert gets 300hp SAE and someone in Florida or high in the mountains also gets 300hp with same mods. It's because the targets the same. Only uncorrected would show who's city is best, but it shows with two people showed up same day same track they'd be 100% equal.