Disappointing dyno numbers?

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Jun 12, 2017 | 11:16 AM

#11

Charper732

Joined: Aug 2016

Posts: 1,154

Likes: 183

From: US129 Maryville, TN

Quote:

Originally Posted by AP1Chief

FPRs are unnecessary?

LOL! Okkk

Yes, AFTERMARKET fprs are unnecessary. Please explain how they are needed if im wrong. Im at over 500 wheel on the stock FPR

Last edited by Charper732; Jun 12, 2017 at 11:23 AM.

Jun 12, 2017 | 04:46 PM

#12

AP1Chief

Joined: Dec 2015

Posts: 812

Likes: 119

You can adjust pressure to your needs? And run larger feeds for e85?

Jun 16, 2017 | 04:41 PM

#13

nguyen365

Registered User

Joined: Mar 2015

Posts: 371

Likes: 9

Quote:

Originally Posted by ceophlo

My motor blew last year so I sourced a replacement and swapped it. I'm running a comptech SC novi 1000 with 3.4" pulley, E85, 1200cc injectors, Walbro 255. I was expecting to at least be in the high 3's. My tuner said that my rising rate regulator was malfunctioning so I will have to purchase a new regulator and retune. He said that we can push more out of the tune when the fpr is replaced. Even still, 330hp was disappointing to me. Am I being unrealistic? I'm not the biggest car guy so let me know if I'm being unreasonable.

That's about right. On a dynojet at vlspeed on 11psi gtx3076 on a dynojet I was at 330whp which is around 400 hp.

But at 7 psi down at Erik's racing on dynopack I was at 417hp. How is that possible....

We did a baseline at vlspeed and at 7 psi I was 230whp. How is that 417 on dynopack. I don't know. I trust dynojet more. That's true wheel horsepower.

There's no way all these kraftwerks are making 420 true whp.. ...

Last edited by nguyen365; Jun 16, 2017 at 04:43 PM.

Jun 16, 2017 | 05:51 PM

#14

s2000Junky

Community Organizer

Joined: Jun 2007

Posts: 31,070

Likes: 566

The OP said he was using the rising rate fpr. You do not want to use this. This is for stock/stage 1 set up only. You now have large injectors and an ems. You need to put the stock fpr back in for a good working proper static fuel pressure to tune around. Your tuner should have enough experience to recognize this. if not, look elsewhere.

On the 3.4" pulley at sea level you should expect to see 11psi ap2 or 12psi ap1. 360-380whp is typical for this blower at this pressure with a proper good tune.