Boost slip issue Roush phase 2

[Doctor Fishtail]

This is old dyno on car before headers and throttle body.

Weird thing is this new dyno chart stopped making power at 6700 rpm and the old one was making power straight up past 7k. Seems weird

So you are on target to 615-620HP with headers and throttle body. Dynojet vs. Mustang #s is what is confusing you. If those were both of the same dyno it would be more clear to you.

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[davidryan1987]

Yea maby I know they read lower but I would think it should be making the same power curve thru the Rpms but just lower. Maby not. I guess next step will be taking it to the track and see what it does.