Another EFR6758 Dyno

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07-12-2017, 09:48 AM

#21

yossi126

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Nice work. It seems that your engine refuses to make more power with the single digits at 6k onwards. Are the numbers lower with less boost and more timing?

07-12-2017, 10:02 AM

#22

aidandj

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Yes. On pump gas I'm also somewhat Det limited.

07-13-2017, 04:13 PM

#23

shlammed

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whats the 20psi graph look like?

07-13-2017, 04:18 PM

#24

psyber_0ptix

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Quote:

Originally Posted by 18psi

450 on E is not even a question, but I am genuinely curious if you'll hit the 2" piping choke point past 400 like we're all theorizing

Quote:

Originally Posted by aidandj

Me too. I'll fab up a 2.5" hotside pipe, and a 3" inlet pipe before I go.

Its really tight on space though. The compressor housing has to be clocked in just the right way, which leaves not much room between the compressor outlet and the subframe. I may try and trim the shelf if I have the turbo out anytime soon.

I'm curious about this. When on the dyno, I couldn't push past 30psi on a high boost canister with e85 because the turbo seemed to choke (according to the tuner). I'm running 2" hotside and tapped out at 400whp on a Dyno Dynamics.

I've ordered 2.25" stuff and hope to have that installed someday. I wonder if that's my limitation, or if it's the 8.6:1 compression. Or maybe after two years, the efr's bearings are becoming sluggish.