Quote:
Originally Posted by radz28
Mike (THPSI) made 880WHP at about 19-psi on the hub at E80 or so (I think that was a 22% lower and something like an 85-90mm upper). Different car, and an M7, but same blower with a bigger inlet/intake, but stock everything else. I think he posted how much timing he was running, which will factor into power, too, but that's posted in this Section I think. I think you could guestimate some numbers from this comparison I imagine.
My car produces about 18-19-psi in boost weather with the mods' below and an 85mm upper. My boost will be higher because of all that, so if you add LTs, you'd probably drop a couple psi as a result. However - my intake-side is a little bigger (that might increase boost a little above yours if you don't go a little bigger than where you are), but might not yield that much of a difference. I, initially, ported the Maggie 87mm snout to fit the LT5 TB (95mm), so when I changed over to the 103/103, I didn't see a huge difference (there was one, but not much), which isn't surprising with a stock cam and exhaust. No dyno numbers though.
Congrats' on pulling the trigger!!! That should make killer power!!! You picked some great stuff! It's interesting to see how all of this pans-out. There's some interesting data out there comparing the older compensation method with the latest method. What I think is nice, is that this new method can bring a lot more people into bigger power easier than before. I think you had to really have someone that knew what they were doing to get the most out of a combination, but hardware like this can lift a lot of us to where we want to be a lot easier.
Good stuff.
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Damn that was a big edit....
....I spoke with the installing shop yesterday, and Dave at DSX is currently working with HPTuners to get everything squared away with my car, so i'm unsure what that means but i'm excited. I'm going to check what size pulley we're going with in a few minutes.