03-18-2024, 10:58 AM | #15 |
Petro-sexual
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Before adding the aux' pump, on the stock Maggie 90mm upper, my low side was dropping in the Summer on 91 (E10). High side wasn't falling yet, but I also was only in the throttle for a single-gear hit, not going through the gears at WOT, so the high side could probably start dropping at that point.
You didn't mention (that I saw) an aux' pump, or a booster, and if that's the case, I wonder if that could have contributed as well. It looks like you're taking care of that this time though, so that's a good thing. JMO.
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'20 ZL1 Black "Fury" A10, PDR, Exposed CF Extractor Magnuson Magnum DI TVS2650R // RFBG // Soler 103 // TooHighPSI Port Injection // THPSI Billet Lid // FF // Katech Drop-In // PLM Heat Exchanger // ZLE Cradle bushings // BMR Chassis-Suspension Stuff // aFe Bars // Diode Dynamics LEDs // ACS Composites Guards // CF Dash // Aeroforce // tint // other stuffs |
03-18-2024, 11:15 AM | #16 |
Drives: 2015 Camaro ZL1 Join Date: Oct 2020
Location: Clinton Twp, Michigan
Posts: 249
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No, because you make sure that you have a robust enough fuel system that has enough head room for weather not to matter. We try not to live on the edge because the chance of failure is high.
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03-18-2024, 11:18 AM | #17 | |
Drives: 2017 Camaro 2SS A8 Join Date: Aug 2018
Location: Petersham MA
Posts: 4,756
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Quote:
Edit: Katech Mike beat me to the punch.
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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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03-18-2024, 11:21 AM | #18 |
Drives: '20 ZLE Join Date: Jun 2020
Location: Mile High
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For me, the AEM X-SERIES WIDEBAND UEGO AFR GAUGE KIT is a must. It makes it very easy to see your AFR in real-time. In the OP's case, surely it would have provided sufficient warning if the engine went lean
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'20 ZL1 1LE A10,
OEM short block, LME heads/valve train, E2650. 100+ octanes, no eth, no meth, no N2O. 2/23 - 1031/1004 wheel. 4/23 - 1.41/9.61/145 at DA 7000 ft. (only made five passes). 2/24 - LME 390, E2650, FBO, 100 oct.; 1116hp/ 1063tq; 109 oct. dyno next. |
03-18-2024, 11:51 AM | #19 |
Drives: 2017 Camaro 2SS A8 Join Date: Aug 2018
Location: Petersham MA
Posts: 4,756
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Correct, and the best part about that gauge is it communicates through the canbus network, so your AFR readings populate into your HP Tuners datalog. You can easily see what your AFR readings are doing over the entire run.
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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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03-18-2024, 12:49 PM | #20 |
Snackbar Tuning
Drives: 2023 SGM ZL1 Join Date: Oct 2016
Location: Florida
Posts: 1,116
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Unfortunately, a wideband isn't enough when it comes to the DI system. If End of Injection drops into the danger zone where you have detonation, preignition or inefficient combustion, the Wideband will still read a generally safe Lambda value but in reality your about to send a rod through the block.
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GM Gen V Calibrator
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03-18-2024, 12:59 PM | #21 |
Drives: 2021 Red Hot ZL1 Join Date: Sep 2020
Location: Gapplebees
Posts: 3,092
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Vengeance Racing is the same way. When I asked about doing tuning my car for flex fuel, they didn't want to do it for the same reason.
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03-18-2024, 01:04 PM | #22 |
Drives: 2021 Red Hot ZL1 Join Date: Sep 2020
Location: Gapplebees
Posts: 3,092
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03-18-2024, 01:10 PM | #23 | |
Having FUN in the SUN...
Drives: 2022 M6 ZL1 1LE Join Date: Jan 2022
Location: San Diego CA
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Quote:
Makes sense... So in that case... perhaps rail pressure on the banks idash with an alarm set for low pressure?
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2022 M6 ZLE: Katech CNC Ported Blower + Ported Heads + 103mm TB + Oil Pump + C5R Chain + Valve Covers + Coil Relocation
TSP VVT and DoD Delete Covers + LME Chain Guide + DSX Billet Lid + ATI Damper + 9.17" Lower + 2.4" Upper + MM Wild CC Coated ARH + AWE Touring + Magnaflow Center X + E85 + MSD Coils + Banks iDash + JMS Booster + Synergy Fender Tank ALL the RED Rear End BMR Goodies + JRE Terminator Cam Package + Remote Tuning and Moral Support from TED @ JRE BMR Motor Mounts + DMS Front HX + FIC 30's + APEX SM.10's + 305/345 R888R's = 770rwhp 785rwtq @E50 13.5psi |
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03-18-2024, 01:42 PM | #24 | |
Snackbar Tuning
Drives: 2023 SGM ZL1 Join Date: Oct 2016
Location: Florida
Posts: 1,116
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Quote:
Since SOI/EOI is directly affected by Rail Pressure, it would definitely be alarm worthy to monitor Rail Pressure.
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GM Gen V Calibrator
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03-18-2024, 03:08 PM | #25 | |
Drives: 2016 1SS NFG A8 Join Date: Aug 2017
Location: 46804
Posts: 6,800
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Quote:
That being said, I can see big name shops not wanting to deal with it because a lot of folks today have a hard enough time tying their shoes. Heaven, forbid they have to take an extra minute when they fill up to check Ethanol percent.
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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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03-18-2024, 03:28 PM | #26 | |
Drives: 2017 ZL1 Join Date: Mar 2022
Location: SD
Posts: 51
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Quote:
What is the rail pressure we should be looking for in logs to NOT drop below? I pull logs about once a month on my car and look over them but not sure on the things that stick out that I should look for unless they look way out of bounds? PS these are the threads I come to this forum for. Great conversation leading to ideas. |
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03-18-2024, 04:02 PM | #27 | |
Drives: 2016 1SS NFG A8 Join Date: Aug 2017
Location: 46804
Posts: 6,800
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Quote:
high side- 2900psi IPW < 6.0 ms On LT4 fueling with low side upgrade, I will sometimes up the rail pressure to 3200psi if the injector pulse widths are on edge (6.0ms). One of the most critical things to monitor imo is IPW. Because if the injectors are opening up past 6.0ms you are getting outside of the window to spray fuel on time. That is when bad things can start to happen. If you have enough injector, then the rail side technically can dip below commanded and still be fine IF and Only IF the IPW's are still in range.
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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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03-18-2024, 06:52 PM | #28 | |
Drives: 2023 Camaro ZL1 Join Date: Apr 2023
Location: Ohio
Posts: 19
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Quote:
Should I run e50 now because of my aux pump and will it be ok now with that pump if temps drop? Tune for e50 and when I want to run e I should just full it up to e30 or e35 so it isn’t maxing out the fuel system? Should I just not run e at all because it’s too stressful and catastrophic? 🤣 What guage can I get to see both e % and also fuel pressure? I can only seem to find one that reads either only fuel pressure or either only e %. will want one 100% |
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