03-28-2023, 08:30 AM | #15 | |
Drives: 2016 1SS NFG A8 Join Date: Aug 2017
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Quote:
I assume when you say 29 degrees for LT1 that is NA which seems right. Just curious what kind of timing do you run for FI LT1's on E?
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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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03-28-2023, 09:41 AM | #16 | |
Snackbar Tuning
Drives: 2023 SGM ZL1 Join Date: Oct 2016
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Quote:
Boosted LT1's I am very conservative on timing. Like 15-16 degrees on 93 and 19-20 on E even though I feel like you could get away with 21-22. I don't do much of the boosted LT1 stuff honestly because the pistons are so weak so I am definitely not as knowledgeable here. Even with a conservative tune these things can pop and then the tuner gets blamed. I actually turn down most work if it involves a boosted LT1 with stock pistons. |
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03-28-2023, 10:34 AM | #17 | |
Drives: 2016 1SS NFG A8 Join Date: Aug 2017
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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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03-28-2023, 01:03 PM | #18 |
Snackbar Tuning
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What do you guys think about Lambda on E60-E70? Meaning, do any of you run leaner on E60+ than you would tune a customer car for?
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03-28-2023, 05:51 PM | #19 |
Drives: 2016 1SS NFG A8 Join Date: Aug 2017
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I run my LT1 .82-.83. I try to keep LT4 stuff around .84-.85.
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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 |
03-28-2023, 06:32 PM | #20 |
Snackbar Tuning
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Same here. I've gone up to .86 on my LT4 without an issue on 14lbs but I moved it back to .84-.85. I get nervous about .86.
Clients LT4's I target .83-.84 unless a lot of blower/psi and meth. Then I target richer. |
04-18-2023, 12:55 PM | #21 |
Drives: 2018 Camaro ZL1 A10 Join Date: Feb 2022
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04-25-2023, 09:07 AM | #22 |
Snackbar Tuning
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As a generality, typically larger cams need more timing in the lower RPM range since dynamic compression and/or efficiency is reduced vs the factory cam in that lower operating ranges. As for WOT timing, it all depends on the build. A bigger cam doesn't automatically mean it requires more timing at WOT. This is where it is beneficial to use a dyno to determine what timing the setup likes.
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04-25-2023, 09:53 AM | #23 |
Drives: 2016 1SS NFG A8 Join Date: Aug 2017
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^Agreed
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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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