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More nitrous , same et, less mph? !?!

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Old Sep 17, 2015 | 02:19 PM
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Default More nitrous , same et, less mph? !?!
So my car went 10.1 at 135 on a 150 shot. Then went 10.1 on a 300 shot at 130. Tune adjusted accordingly, timing, and fueling. Why more nitrous and same et? Only thing I changed was a plate to a puck, and from a victor jr to a super victor.

I think I need a bigger cam. 6.0 243 heads forged bottom end. Not sure specs on cam
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Old Sep 17, 2015 | 02:53 PM
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Are you running a progressive on the hit? Also, what fuel pump are you using?
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Old Sep 17, 2015 | 03:10 PM
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Yup a progressive , just to get it down the track to get data. Tires hooked 1.38 60s consistent. I have a stand alone
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Old Sep 17, 2015 | 03:32 PM
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You lost 5mph. That's not right at all.
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Old Sep 17, 2015 | 03:33 PM
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What was your jetting? Also, are you reading plugs or just going off a wideband?
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Old Sep 17, 2015 | 03:45 PM
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How do your motor MPH compare?
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Old Sep 17, 2015 | 05:59 PM
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Never ran on hp. Reading plugs for timing and afr. Also using a wideband. Here is what is funny. I'm jetting 99 and I think the low psi system calls for a 78 jet ? Not sure off hand but, I had to jet it down to a 46 on the fuel side, way less than what is called for for jets
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Old Sep 20, 2015 | 03:25 PM
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what kind of trans
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Old Sep 20, 2015 | 04:36 PM
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Originally Posted by sbf
what kind of trans
Th350
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Old Sep 20, 2015 | 05:35 PM
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what size feed line from the bottle? what size lines from noid to plate?
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Old Sep 21, 2015 | 12:31 AM
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Originally Posted by jblankenship
what size feed line from the bottle? what size lines from noid to plate?
I have 2 bottles . -6 all the way to the solenoid. Noid to the puck is -2 , shouldn't matter though a - 2 should flow a 99 jet no problem?
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Old Sep 21, 2015 | 06:25 AM
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Have you logged a run? Sound like the transmission was slipping
Last edited by ls13ater; Sep 22, 2015 at 10:23 PM.
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Old Sep 21, 2015 | 02:34 PM
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Trans is fine , no excessive heat
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Old Sep 21, 2015 | 03:15 PM
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FPSS hooked up?

Maybe the progressive isn't working correctly.
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Old Sep 21, 2015 | 03:37 PM
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Progressive was set at 100% I even tested it when it was off and sprayed nitrous in the intake, looks like it was going full open. No pulsing
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Old Sep 21, 2015 | 03:46 PM
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Ok cool, but are you using a fpss?
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Old Sep 21, 2015 | 04:02 PM
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Not sure why you wouldn't run it on motor to rule out that the intake is making less power for some reason.
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Old Sep 23, 2015 | 11:14 AM
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Originally Posted by blk00ss
Not sure why you wouldn't run it on motor to rule out that the intake is making less power for some reason.
Dont know my time on HP to compare the old intake
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Old Sep 23, 2015 | 12:40 PM
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What about your Trans and Convertor?
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Old Sep 23, 2015 | 03:48 PM
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my guess is converter cant take it or trans. dual it down with the progressive where it dont hit so hard and see if mph picks up. but if ur having to jet ur fuel down that much sounds like flow problem on the nitrous side.
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