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[texasbound972]

Originally Posted by wparsons

17% is a huge correction factor, that's about the same as the drivetrain losses.

As for the dyno, did you miss my questions above?

What's the boost target before/after the new block? What's the new C/R?

What oil are you running on the new block?

To get the same hp with significantly lower C/R, you're going to need a lot more boost, and it'll spool later in the RPM range.

Sorry I've been busy. I was wanting to run a 20 and 25 psi map. 20 for e50 and lower and 25 for e51 and up. I'm currently at 23 psi at around 4500 as you can see from the dyno. All of these issues started after the new built block. I started running 0w40 motul, this last oil change was 5w30 purol. Here soon I'm going back to the 0w40 but with the purol.

[texasbound972]

Originally Posted by wparsons

What's the boost target on both runs? What's the c/r on the new block? If you've dropped a couple points you're going to need a lot more boost to make the same power you were before.

Sorry, c/r is 10.5:1

[texasbound972]

We had a run at 25 psi but the hp didn't go up a whole lot. Since the boost spiked like it did, Bill from delicious tuning and Mike at infamous performance figured it would be safer at 23 psi incase I have 91 in the car.

[cdrazic93]

The efficency island was probably just south of 25 psi.