Tune

RAD18ZL1 · 12-14-2020, 03:29 PM

Has anyone actually stopped the stumble issue that many of the 2017-2018
ZL1 have when leaving a stop light. I have tried 2 different throttle bodies and a throttle pedal controller. None have worked. Anybody have a tune they "Guarantee" will fix it ? I have tried working with GM but they have nothing to resolve it.

clg82 · 12-14-2020, 04:03 PM

I haven't noticed anything that you describe on my 2018 ZL1....could you describe what you're feeling? And are you a manual or automatic transmission?

ST1LE · 12-14-2020, 04:14 PM

This is a good question, referred on this site as the dreaded "Bog" issue. Its the traction management I believe.

I have not heard it brought up many times lately, curious if there is a fix too.

Redlinez · 12-14-2020, 04:38 PM

Ted Janetty would know if anyone does.

IneedAZ · 12-14-2020, 05:13 PM

M6 or a10?

RAD18ZL1 · 12-15-2020, 08:34 AM

My ZL1 is a manual. 2018 . It will fall on it's face when leaving a stop light . Just a normal take off not launching. Have tried 2 ported throttle bodies and 1 throttle pedal controller. I'm thinking about doing the elsd update to see if that would solve the problem. Anyone ever had that done for this issue and did it work ? I really like the car but have came close to being hit twice and need to get this solved.

Jaxcam02 · 12-15-2020, 08:59 AM

Its the same for both my 18 SS 1le and the 17 ZL1 manuals. It doesn't really let you throw a lot of throttle into the clutch from a stop and I suspect, as someone above said, its part of the traction management system. next time I take the ZL1 out im going to see if turning of trac control helps. This always makes me feel like I don't know how to drive a stick shift lol.

IneedAZ · 12-15-2020, 09:42 AM

Unfortunately i dont think you will totally resolve the issue without a tune for the M6 tranny cars

hawk02 · 12-15-2020, 12:59 PM

You can all call me crazy but here’s my theory on for the cause of the m6 stumble:

There’s a sensor on the clutch pedal that’s there to minimize strain on clutch from the high torque levels of the LT4. If it senses any amount of pressure on the clutch pedal it will, as pointed out in this thread (https://www.camaro6.com/forums/showt...pm&page=12#168), cut spark around 5000 rpm preventing the engine from reaching redline. I suspect this same sensor also cuts spark at low rpms when starting up from a stop where torque levels are also high. GM put the clutch pedal sensor there to prevent people from riding the clutch and prematurely wearing it out.

RAD18ZL1 · 12-15-2020, 06:26 PM

I'm not sure about a clutch sensor limiting torque at a slow take off but with all the electronics' on these cars i can see where some tech guy might think that would be a good idea. As far as having a tune done . That is not something i would like done on a car with only 6,000 miles on it and wave my warranty goodbye. I will see if I can find a Chevy dealer that has done the ELSD update and try that. Now to find a dealer in the Pacific Northwest with experience may be another problem .

MartinLe · 12-15-2020, 07:00 PM

Quote:

Originally Posted by hawk02

You can all call me crazy but here’s my theory on for the cause of the m6 stumble:

There’s a sensor on the clutch pedal that’s there to minimize strain on clutch from the high torque levels of the LT4. If it senses any amount of pressure on the clutch pedal it will, as pointed out in this thread (https://www.camaro6.com/forums/showt...pm&page=12#168), cut spark around 5000 rpm preventing the engine from reaching redline. I suspect this same sensor also cuts spark at low rpms when starting up from a stop where torque levels are also high. GM put the clutch pedal sensor there to prevent people from riding the clutch and prematurely wearing it out.

I have never had my car bog on me from a soft take-off at a red light, nor from a hard launch. I do come from the old school. When I let the clutch out, I let the clutch out. Although my foot is touching the pedal, it is not resting on it. I've had a couple decent launches, you know, just the right amount of wheel spin, correct rpm, etc.

Maybe hawk02 is on to something?

bobby35ny · 12-15-2020, 09:36 PM

I got so fed up with the clutch I went to the A10.

jvandy50 · 12-15-2020, 10:39 PM

Mine will let me ride it out if i take off like a newb and give it too much throttle to take off. It’s when i try to feather it that mine cuts.

Car is torn apart now so i will update as to whether a tune helps mine or not...fingers crossed

12-14-2020, 04:03 PM	#2
clg82 Drives: 2020 Camaro ZL1 Join Date: Oct 2020 Location: Fort Worth, Texas Posts: 1,150	I haven't noticed anything that you describe on my 2018 ZL1....could you describe what you're feeling? And are you a manual or automatic transmission? __________________ 2020 ZL1 A10 Shadow Gray Metallic Magnuson Magnum DI TVS2650R\| Mamo Throttle Body V2\| RotoFab Intake\| AWE Touring Catback Exhaust\| TCM Tune\| Tune\| Eibach Pro\| BMR Rear Cradle Lockout\| PPF\| Ceramic\| BCForged HCS21

12-14-2020, 04:14 PM	#3
ST1LE Drives: E92 BMW M3 Join Date: Oct 2012 Location: Houston Posts: 4,496	This is a good question, referred on this site as the dreaded "Bog" issue. Its the traction management I believe. I have not heard it brought up many times lately, curious if there is a fix too. __________________ SOLD - 2013 1LE - Pat G Spec'd Cam, NPP with 1 7/8" Long Tube Headers with High Flow Cats, Intake w/scoop, Ported Throttle Body, and Apex 1.25" Lowering Springs. J-Rod Built and Matt@FSP Tuned

12-14-2020, 04:38 PM	#4
Redlinez Shifts under load Drives: 2020 Camaro 1SS 1LE rally green Join Date: Apr 2017 Location: Fuquay-Varina, NC Posts: 1,295	Ted Janetty would know if anyone does. __________________ 24 Audi S3 prem plus, sport package HPDE - southeast - JTI- solo, PCA- blue. 22 Suzuki GSX-S 1000GT blue

12-14-2020, 05:13 PM	#5
IneedAZ Drives: 2017 ZL1 A10 & 2021 BMW M340i x Dr Join Date: Mar 2009 Location: Tampa Posts: 5,110 View My Garage	M6 or a10? __________________ Sold 2012 2LT RS 12.3@112 old setup Sold 1967 Camaro Pro Street. Ran 10's mild BB on NOS. 2017 HyperBlue ZL1 A10 Born 3/17/17Delivered 4/08/17 2020 Build: Mag2650, BTR Stage2, NW103, BG, 14% lower, 90mm upper, ARH 2" Long system w/no cats, SW Legend mufflers. 807hp/762tq on 93 gas and 848hp/792tq on e47 Sold 2018 (Go Mango) Dodge Charger Daytona 392 Daily Driver Daily Driver 2021 BMW M340i Xdrive

12-15-2020, 08:59 AM	#7
Jaxcam02 Drives: 2017 Silverado/2017 ZL1 Join Date: Aug 2019 Location: Jax/Palatka FL Posts: 1,090	Its the same for both my 18 SS 1le and the 17 ZL1 manuals. It doesn't really let you throw a lot of throttle into the clutch from a stop and I suspect, as someone above said, its part of the traction management system. next time I take the ZL1 out im going to see if turning of trac control helps. This always makes me feel like I don't know how to drive a stick shift lol. __________________

12-14-2020, 03:29 PM	#1
RAD18ZL1 Drives: 2018 ZL1 Join Date: Aug 2020 Location: pacific Northwest Posts: 16	Tune Has anyone actually stopped the stumble issue that many of the 2017-2018 ZL1 have when leaving a stop light. I have tried 2 different throttle bodies and a throttle pedal controller. None have worked. Anybody have a tune they "Guarantee" will fix it ? I have tried working with GM but they have nothing to resolve it.

12-15-2020, 08:34 AM	#6
RAD18ZL1 Drives: 2018 ZL1 Join Date: Aug 2020 Location: pacific Northwest Posts: 16	My ZL1 is a manual. 2018 . It will fall on it's face when leaving a stop light . Just a normal take off not launching. Have tried 2 ported throttle bodies and 1 throttle pedal controller. I'm thinking about doing the elsd update to see if that would solve the problem. Anyone ever had that done for this issue and did it work ? I really like the car but have came close to being hit twice and need to get this solved.

12-15-2020, 09:42 AM	#8
IneedAZ Drives: 2017 ZL1 A10 & 2021 BMW M340i x Dr Join Date: Mar 2009 Location: Tampa Posts: 5,110 View My Garage	Unfortunately i dont think you will totally resolve the issue without a tune for the M6 tranny cars __________________ Sold 2012 2LT RS 12.3@112 old setup Sold 1967 Camaro Pro Street. Ran 10's mild BB on NOS. 2017 HyperBlue ZL1 A10 Born 3/17/17Delivered 4/08/17 2020 Build: Mag2650, BTR Stage2, NW103, BG, 14% lower, 90mm upper, ARH 2" Long system w/no cats, SW Legend mufflers. 807hp/762tq on 93 gas and 848hp/792tq on e47 Sold 2018 (Go Mango) Dodge Charger Daytona 392 Daily Driver Daily Driver 2021 BMW M340i Xdrive

12-15-2020, 12:59 PM	#9
hawk02 Coupe Newbie Drives: 2017 ZL1, 2021 Corvette Convertible Join Date: Jul 2011 Location: Columbus, Ohio Posts: 3,283 View My Garage	You can all call me crazy but here’s my theory on for the cause of the m6 stumble: There’s a sensor on the clutch pedal that’s there to minimize strain on clutch from the high torque levels of the LT4. If it senses any amount of pressure on the clutch pedal it will, as pointed out in this thread (https://www.camaro6.com/forums/showt...pm&page=12#168), cut spark around 5000 rpm preventing the engine from reaching redline. I suspect this same sensor also cuts spark at low rpms when starting up from a stop where torque levels are also high. GM put the clutch pedal sensor there to prevent people from riding the clutch and prematurely wearing it out. __________________

12-15-2020, 06:26 PM	#10
RAD18ZL1 Drives: 2018 ZL1 Join Date: Aug 2020 Location: pacific Northwest Posts: 16	I'm not sure about a clutch sensor limiting torque at a slow take off but with all the electronics' on these cars i can see where some tech guy might think that would be a good idea. As far as having a tune done . That is not something i would like done on a car with only 6,000 miles on it and wave my warranty goodbye. I will see if I can find a Chevy dealer that has done the ELSD update and try that. Now to find a dealer in the Pacific Northwest with experience may be another problem .

12-15-2020, 09:36 PM	#12
bobby35ny Drives: 18 ZL1 A10 Join Date: Nov 2008 Location: South East, FL Posts: 3,024	I got so fed up with the clutch I went to the A10. __________________ 2017 ZL1 M6 Bog City, 2013 ZL1 M6, 2010 2SS M6 ZL1::J-E-T-S JETS JETS JETS

12-15-2020, 10:39 PM	#13
jvandy50 Drives: 18 ZL1-1LE, 10 JKU Join Date: Jul 2018 Location: AR Posts: 585	Mine will let me ride it out if i take off like a newb and give it too much throttle to take off. It’s when i try to feather it that mine cuts. Car is torn apart now so i will update as to whether a tune helps mine or not...fingers crossed

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