09-28-2020, 11:12 AM | #15 | |||
Drives: 2016 1SS NFG A8 Join Date: Aug 2017
Location: 46804
Posts: 6,799
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yes
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I don't believe we need 85 psi low side to do what we need. This setup will run fine all day at E60 and it's not a big deal if it won't run full pump E without mixing. E60 provides 90% of the gains anyway. Either way The low side tapering off at the top of the gear isn't that big of deal since the high side holds even though I would like to see low side hold 70psi all the way through. Quote:
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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; 09-28-2020 at 11:29 AM. |
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09-28-2020, 11:27 AM | #16 |
Dyno Show Queen LOL
Drives: 16 SS & 17 ZL1 Both Yellow Join Date: Jan 2014
Location: Houston
Posts: 4,345
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Sounds like old LS tuning going off good afrs mostly was trying to help i would not risk anything falling off heat and load vs being on a dyno can change all of that real quick.. you will notice my advice is always proper way vs half ass.
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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 |
09-28-2020, 11:36 AM | #17 |
Drives: 2016 1SS NFG A8 Join Date: Aug 2017
Location: 46804
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It isn't old LS tuning. We are street tuning not a dyno. I am looking at a lot more data aside from AFR. I just said we are going to swap the low side for the ZR1...either way it's still fine because the high side holds. The injectors and HPFP don't move through the curve and it still is 50psi. If it was dropping down to 40 or less then we would of dropped the E content back.
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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 |
09-28-2020, 11:57 AM | #18 |
Dyno Show Queen LOL
Drives: 16 SS & 17 ZL1 Both Yellow Join Date: Jan 2014
Location: Houston
Posts: 4,345
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Ok no problem my suggestion then are for people that want to take full advantage of the pump and setup the car correctly as someone allready mentioned the pressures go hand and hand.. thats the reason i sent my tables to LPE.. read it.. high side fine low side no good... symptoms car Cutts out after a few hard pulls in high 4000 rpm band. I had a lot more low side then a ZR1 pump. Why would you want to still mix when all you have to do is a return style abs ck valve
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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 |
09-28-2020, 12:42 PM | #19 | |
Drives: 2016 1SS NFG A8 Join Date: Aug 2017
Location: 46804
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Again the low side isn't dropping enough to cause the high side to strain. If the low side drops too far, then the high side drops, and the injectors pulse open up. That is how it works plain and simple. If the Injectors and High side parameters remain constant without fluctuation through the entire pull then the engine is getting the fuel. Aside from that the Low side doesn't drop until right at the top of the gear around 6400rpm. The engine pulls hard and clean, the coolant temps don't sky rocket after a pull. Everything I am seeing shows it's fine.
I mentioned the Low side was going to be a issue prior....it's not my car. E60 provides 90% of the gains and is allowing the engine to reach MBT... and the shit is easy to mix. He wanted to try it first as is and see where it's at before going further. Lingenfelter is 30 minutes from us. Christian has tuned this car prior. My brother chose to have me tune it for some reasons I am not going to get into a debate over. Quote:
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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; 03-18-2021 at 09:13 AM. |
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09-29-2020, 12:23 PM | #20 | |
Drives: 17 Camaro SS 1LE & 16 Sierra AT CC Join Date: Nov 2016
Location: Norman, OK
Posts: 2,424
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King I would love to chat with ya offline, I am waiting on my 19 C7Z to get here right now. Should be here by the end of next week hopefully. I am just gonna do either the Halltech or Cordes CAI, the AWE non-catted x-pipe and maybe a ported TB. I really want to dig right in and tune it, it is killing me to not do this right off of the bat. I know the ECM has some gains, the TCM will be a pain in the ass since I will have to send it off to have it unlocked. I will send ya a PM.
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2019 Corvette Z06 2LZ A8 - Halltech CAI, AWE non-catted X-pipe, Mamo V2 ported TB 592rwhp, bone stock 566rwhp
2017 Camaro SS 1LE - Procharger D1SC w/ Tial 2" BOV & Race intercooler / ARH full length catless headers / Alky meth injection system - 650rwhp on conservative tune SOLD |
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09-29-2020, 03:40 PM | #21 | |
Drives: 2015 C7 Z06 M7 Join Date: Dec 2012
Location: So-Cal
Posts: 654
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As a matter of fact we drop the low side on our Camaro to 35 PSI at idle, cruise, and a good portion of part throttle, then bring it to 50 at WOT. No reason to run the pumps hard if it's not needed. The high side is a positive displacement pump and fuel (unlike air) is essentially incompressible, so no matter how much pressure you run on the low side the high side is going to pump the same amount, up to the point where you start reaching the flow capability of the pumps inlet port internal passages. At that point you can find a bit more flow through the HP pump by raising the low side above 50psi - but this is in the order of 3-5% more flow...
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09-29-2020, 04:15 PM | #22 |
Drives: 2016 1SS NFG A8 Join Date: Aug 2017
Location: 46804
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Thanks for confirming Mike!
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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 |
09-29-2020, 05:55 PM | #23 | |
Drives: 2017 Camaro 2SS A8 Join Date: Aug 2018
Location: Petersham MA
Posts: 4,750
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2017 Chevy Camaro 2SS A8 Whipple 3.0, Mast Black Label heads, Fore triple in-tank pumps, 112mm TB, LPE +52% injectors, LPE BB HPFP, 15” conversion 1059 WHP/944 WTQ, 9.48@150
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03-16-2021, 11:35 AM | #24 |
Drives: 2019 Chevrolet SS Join Date: Mar 2019
Location: Houston, TX
Posts: 93
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great information! I was under the impression that the LPE big bore was based off the LT1 pump so it should run well at around 2100 psi similar to the stock LT1. you might have a little more room to drop psi from 2400 to 2100 for some better headroom on your lowside.
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03-16-2021, 08:33 PM | #25 |
Drives: HBM ZLE Join Date: Aug 2017
Location: In the garage
Posts: 802
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Thanks for all the information! It is invaluable to those learning how to tune
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03-18-2021, 09:11 AM | #26 | |
Drives: 2016 1SS NFG A8 Join Date: Aug 2017
Location: 46804
Posts: 6,799
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Quote:
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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 |
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03-18-2021, 11:02 AM | #27 | |
Drives: 2019 Chevrolet SS Join Date: Mar 2019
Location: Houston, TX
Posts: 93
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03-18-2021, 02:39 PM | #28 |
Drives: 2016 1SS NFG A8 Join Date: Aug 2017
Location: 46804
Posts: 6,799
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Yep...btw congrats on the ZL1! I follow your YT channel.
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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 |
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