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Cliff, Congratulations on getting the car up and running. Looking at your dyno graph, it does look like a classic exhaust restriction, especially when you get to the high rpm
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Cliff,
Congratulations on getting the car up and running. Looking at your dyno graph, it does look like a classic exhaust restriction, especially when you get to the high rpm and instead of the power continuing to climb, it gets wavy and starts to fall off. The .64 A/R housing you have are capable of 700+whp easily and I'm being conservative. We have done more. I'm posting a couple dyno graphs for comparison. Both these cars have built engines. One of them is a VHR with our Stage 2 (GT 2860RS with .86 A/R). As you can see, we're accomplishing 608whp at 15psi of boost on 9:1 compression. If you are at 19psi with GT30's with 10:1 compression and only at 613whp, either you have a major exhaust restriction or something is not right. It is not a turbo sizing issue. Also, another way to look at it is that if the dyno graph did not fall off at high rpm, then I would expect you to be at 700whp at the same boost level. ![]() ![]() ![]() Quote:
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