2019 camaro 1le tune

Hi all,

New to tuning here. I installed headers and e85 and got my car tuned. After I got it tuned I lost all the burbles and pops that I used to have. I have tried setting the min spark values values in base and long term tables to 5 in the 0.04 - 0.12 range but that didn't help not sure if manuals and automatics differ. Any suggestions? I don't want anything excessive just how it sounded before. Attached find my current tune and pictures of the current tables. Appreciate any help thanks!

Mods include

GM cold air intake
bbk long tube headers
bbk high flow cats
AWE catback
e85 flex fuel
msd spark plug wires

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Check out this file and how the min spark tables are. This car has lots of deceleration pops and crackles. It's actually stock for the 2020 10Speed. Use for reference only mods are LTH, full exhaust, rotofab intake.

You need negative 5 degrees everywhere(RPM) you want the crackles with headers. from .12 and lower. If you leave DFCO enabled(you should) then the crackles will always happen around 2000-3500 range so I would make it -5 all the way up to 3600. Then test. After you have confirmed the crackles, you can start adding a few degrees where it crackles too much for your liking.

If you want super annoying gun shots, then make the entire .12 and lower rows -5 and disable DFCO. This will likely destroy your cats though if you have any.

Thanks! Do you guys know if it differs if you have flex fuel and Manual cars vs Automatic? Also should I change both base and long or only one?

Flex fuel doesn't matter, manual vs automatic is different on some cars. You only have to change base but I typically change both. I've done it both ways, Base only and Base and Long. Crackles were the same so I'm not sure when the ECU references the Long table. Maybe on a very long decel with DCFO disabled the ECU will use long? I dunno.

looking for a stock 2019 camaro 1le file

This isn't a 1LE but it is a ZL1. I don't think there is any difference though aside from maybe the trans gear ratios. I put a 2018 1LE file here too, I don't have a 2019.

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here is a 2018 camaro M6

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I'm just here wondering why whoever tuned your car decided to zero the VVT tables on the stock cam...

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Originally Posted by ShaneB

I'm just here wondering why whoever tuned your car decided to zero the VVT tables on the stock cam...

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At part throttle/low RPM, the cam movement is only there for fuel economy. Some tuners will tune this out for a better drive-abiltiy and low end torque.

Oh, I knew it was for economy but figured it helped with drivability too. Wouldn't cancelling that then cause the VCP spark advance to not occur, making it cruise at 25-30 degrees instead of 40-50, possibly hurting driveability?

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Originally Posted by ShaneB

Oh, I knew it was for economy but figured it helped with drivability too. Wouldn't cancelling that then cause the VCP spark advance to not occur, making it cruise at 25-30 degrees instead of 40-50, possibly hurting driveability?

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Yes, the VCP spark only adds based on multiplier tables and when the cam moves. If the cam isn't moving then it's not adding from the VCP spark table. But that also means you don't need that much spark advance back. Remember, the cam movement value is retard degrees, so the more retard you have the more timing you can run to keep the combustion in the correct area or time of event. The VCP table isn't an absolute adder, its a value that is applied to a multiplier and that sum is to account for the cam retard to keep combustion in the correct area. The base table has pretty high base timing in the cruise area on Corvette's and Camaro's(40-50 degrees). You won't need to add anything to the base table by disabling VCP and Cam movement at part throttle on those cars. But you can if you need to a mid load areas if you find drive-ability needs it. I usually adjust the area of moderate throttle right before you enter PE mode as the CAM will start to move from 0 degrees of commanded retard as you go WOT.

Also noticed that PE delay was disabled on OP's tune. Could that be what's caused the sound change and why do tuners do this?

Your DFCO enable and disable rpm values have all been changed. This could be the issue. Try changing them back to oe. Enable RPM 1050 Disable rpm 825 enable tcc 2200 disable tcc 1600

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Originally Posted by Doc Oc

Also noticed that PE delay was disabled on OP's tune. Could that be what's caused the sound change and why do tuners do this?

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No. This just asks the ECU to reach the targeted lambda for PE mode faster when you stomp the throttle.

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Originally Posted by Doc Oc

Your DFCO enable and disable rpm values have all been changed. This could be the issue. Try changing them back to oe. Enable RPM 1050 Disable rpm 825 enable tcc 2200 disable tcc 1600

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His DFCO parameters are OEM values for manual cars. They were not changed.

Id like to find a stock 19 1le file as well. Are the external load idle tables stock for a 19 1LE?

Also what about the o2 offset R/L?

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Originally Posted by TriPinTaZ

Yes, the VCP spark only adds based on multiplier tables and when the cam moves. If the cam isn't moving then it's not adding from the VCP spark table. But that also means you don't need that much spark advance back. Remember, the cam movement value is retard degrees, so the more retard you have the more timing you can run to keep the combustion in the correct area or time of event. The VCP table isn't an absolute adder, its a value that is applied to a multiplier and that sum is to account for the cam retard to keep combustion in the correct area. The base table has pretty high base timing in the cruise area on Corvette's and Camaro's(40-50 degrees). You won't need to add anything to the base table by disabling VCP and Cam movement at part throttle on those cars. But you can if you need to a mid load areas if you find drive-ability needs it. I usually adjust the area of moderate throttle right before you enter PE mode as the CAM will start to move from 0 degrees of commanded retard as you go WOT.

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Been thinking about this for a bit, can you explain how retarding the cam would go hand in hand with advancing timing? I would think if the valve events happen later, you'd also want ignition to happen later instead of earlier, if not leaving it where it is considering airmass and rpm, not cam timing is the base for timing.

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Originally Posted by ShaneB

Been thinking about this for a bit, can you explain how retarding the cam would go hand in hand with advancing timing? I would think if the valve events happen later, you'd also want ignition to happen later instead of earlier, if not leaving it where it is considering airmass and rpm, not cam timing is the base for timing.

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Dynamic compression. Remember the cam is moving and affecting the valves but NOT the pistons. The pistons are static. When you retard the cam you lower the dynamic compression of that combustion event therefore allowing the event to tolerate more timing. It is not necessarily a 1 for 1 ratio either. If you retard the cam 20 degrees it doesn't mean you should add 20 degrees of timing.

Ahh, of course. Honestly upset with myself that I didn't realize that lol. I can't remember, are the numbers in the VVT tables the degrees in relation to the crank or the cam?

It is degrees of cam movement which is timed against the crank position. The crank/pistons are always the main static event in a GM pushrod engine.