10-18-2021, 09:52 AM | #15 |
Drives: 2017 ZL1 Join Date: Jun 2018
Location: Randolph
Posts: 317
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If the hp pump isn’t spaced correctly in reference to the cam lobe you have it will not flow to its capabilities or it could destroy the pump. They need to be shimmed correctly
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Kooks full exhaust, Roto Fab, Whipple,Williams 103, Fore innovation, JRE cam and tuning
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10-18-2021, 10:13 AM | #16 | |
Dyno Show Queen LOL
Drives: 16 SS & 17 ZL1 Both Yellow Join Date: Jan 2014
Location: Houston
Posts: 4,349
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Quote:
Yes get the exact spacing from LPE if you buy the pump so it's shimmed correctly.
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Kong Ported 2650, Crawford Racing Port Injection, Weapon X 112mm Adapter, NW112mm TB, Livernois Ported LT4 Heads, Lingenfelter GT32 stealth cam, Haltech Elite, and Carbon by Trufiber |
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10-18-2021, 10:50 AM | #17 | |
Drives: 2016 1SS NFG A8 Join Date: Aug 2017
Location: 46804
Posts: 6,950
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Quote:
I am going to say 16-17psi on E60 rough figure based on what I have seen on my Brother's C7Z...his setup is H/C 2650 with 32% lobe, +30's, LPE hpfp, Cordes low side. First thing to drop is the high side pressure( commanding 2900psi at the rail). To run more E it either needs a 42% lobe or lower rail pressure and run more injector...+60's. Low side doesn't seem to move much...stays right on the regulator pressure of 70psi. We talked about adjusting regulator to 80psi to see if it does anything for the HPFP...I have my doubts but I am no expert. Logic tells me that if the low side was not keeping up the pressure would drop, but that doesn't mean hitting the high side with more pressure won't help. I have read opinions going both ways on this. Some say if the low side stays above 60psi there is nothing to be gained by adding more pressure. LPE on the other hand suggests moon PSI from the low side(80+ psi).
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2016 NFG 1SS A8
Options-2SS Leather/NPP Perf. mods-Whipple 2.9/Fuel System/Flex Fuel/103mm TB/Rotofab Big Gulp/Cat Deletes/Corsa NPP Per. times- 10.5 @ 137 w/ 1.8 60ft Full weight on 20's 1200DA Last edited by KingLT1; 10-18-2021 at 11:01 AM. |
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