C7 Pause Before Acceleration
Thread Starter
Racer
Joined: Jul 2019
Posts: 444
Likes: 92
From: Truckee, CA
C7 Pause Before Acceleration
Yesterday I floored my C7, while in Sport Mode, to pass a car and the car had a significant hesitation before accelerating. It wasn't a problem other than it was scary for the moment I was in the wrong lane while it felt like the engine shut off. I suspect this is common and it is the traction control taking time to calculate. Please correct me if I'm wrong.
Today I accelerated quickly in Tr Mode and the response was immediate and wonderfully reassuring. Is there a good compromise between Sport and Tr or any other good solution to this? Do many people just use Tr mode unless just cruising or questionable traction? I'm a little reluctant to use Tr a lot because it makes it even more tempting to drive aggressively and because of the rougher ride. Also, I suspect the traction control is usually much safer.
Today I accelerated quickly in Tr Mode and the response was immediate and wonderfully reassuring. Is there a good compromise between Sport and Tr or any other good solution to this? Do many people just use Tr mode unless just cruising or questionable traction? I'm a little reluctant to use Tr a lot because it makes it even more tempting to drive aggressively and because of the rougher ride. Also, I suspect the traction control is usually much safer.
Roadster Madness. 😠
Joined: Sep 2009
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From: Ventura Co Ca
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St. Jude Donor '13, '20-'21
The only time I can remember the engine boggling down was when the revs got into the redline.
When, I am cruising on the Freeway and I want to pass someone, I put the shifter in manual mode, hit the paddles two to three times, and step on it.
The seat smacks me in the back and I am gone!
When, I am cruising on the Freeway and I want to pass someone, I put the shifter in manual mode, hit the paddles two to three times, and step on it.
The seat smacks me in the back and I am gone!
Intermediate
Joined: Jun 2024
Posts: 45
Likes: 8
This has been an issue since ETC came about (and maybe before that?) and is not isolated to corvettes. I daily a '16 duramax with the same issue. Supposedly a 'throttle sensitivity booster' helps. I've also witnessed this same thing on a Cruze and an Acadia.
my post does nothing but tell you you're not alone, and it's lame.
my post does nothing but tell you you're not alone, and it's lame.
Last edited by Trooper944; Jul 9, 2024 at 02:48 AM. Reason: spelling
Pro
Joined: Aug 2021
Posts: 501
Likes: 402
From: Maryland
2023 C7 of the Year Finalist - Unmodified
Yes there is a wonderful solution...Soler Throttle Controller. It will wake your car up tremendously and give you complete control of your throttle response. Best mod for a C7 imo. I got the Bluetooth version. Easy install. Immediate results
Thread Starter
Racer
Joined: Jul 2019
Posts: 444
Likes: 92
From: Truckee, CA
It seems to me the easiest solution is to put it in Track mode before passing. Is ECT totally off in Track mode or just less cautious? I've never spun the tires in this car but I've spent little time in track mode and I've never tested its limits in track mode.
Edit: Today I will put it in track mode and punch it a few times to see how hard/easy it is to break the tires loose. Later I'll have my results published in Scientific American.
Edit: Today I will put it in track mode and punch it a few times to see how hard/easy it is to break the tires loose. Later I'll have my results published in Scientific American.
Last edited by DugT; Jul 9, 2024 at 11:49 AM. Reason: The voices in my head.
Pro
Joined: Aug 2021
Posts: 501
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From: Maryland
2023 C7 of the Year Finalist - Unmodified
You remove the gas pedal unit and it plugs into that. 2 bolts I believe. Then control the settings from the app. Look it up on their site and YouTube videos. Maybe 20 mins to install. Very easy. Most other C7 owners have it. You can do a thread search on this site and see.
Thread Starter
Racer
Joined: Jul 2019
Posts: 444
Likes: 92
From: Truckee, CA
Thanks for recommending the Soler Controller. I read several other post about the Soler Throttle Controller and everyone loves it but there is something I don't understand. If the problem is the slow ECT, I don't see how the Soler solves that problem? Is the problem not the ECT? If not, what is Chevy's excuse?
Last edited by DugT; Jul 14, 2024 at 09:09 AM.
Thread Starter
Racer
Joined: Jul 2019
Posts: 444
Likes: 92
From: Truckee, CA
This afternoon I accelerated fast in Sport and Track modes. In Sport, I didn't notice the lag that I noticed yesterday. Track mode was very responsive and it was more likely to be in a lower gear. This is a 2014 Z51. Maybe yesterday when I experienced a lot of lag, I was driving sedately until I found a place to pass and it took the car a moment to "Wake up" so to speak.
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Race Director
Joined: Oct 2004
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From: Home of the VOLS ! Knoxville, TN. Tennessee
St. Jude Donor '11-'12-'13, '15, '16-'17-'18-'19
You may have been cruising in V4 mode and the car had to get out of that mode first to accelerate.
If you have the V4/ V8 mode active on your car, you need to get a range device to eliminate it.
I bought my car with the V4 mode written out of it with a tune by a previous owner and I love the fact that it does not go in V4 mode at all.
If you have the V4/ V8 mode active on your car, you need to get a range device to eliminate it.
I bought my car with the V4 mode written out of it with a tune by a previous owner and I love the fact that it does not go in V4 mode at all.
Intermediate
Joined: Jun 2024
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From my understanding, devices like the Soler change the "slope" of the signal sent to the ECM so, if 25% pedal WAS sending 25% throttle signal, now it will send 35% throttle signal at the same 25% pedal. (arbitrary made-up numbers for illustration). Makes the throttle signal 'less linear'.
at least that's been my understanding as I've seen it in the diesel world.
EDIT: please get rid of V4 mode if that's still kicking around in your engine
at least that's been my understanding as I've seen it in the diesel world.
EDIT: please get rid of V4 mode if that's still kicking around in your engine
Thread Starter
Racer
Joined: Jul 2019
Posts: 444
Likes: 92
From: Truckee, CA
From my understanding, devices like the Soler change the "slope" of the signal sent to the ECM so, if 25% pedal WAS sending 25% throttle signal, now it will send 35% throttle signal at the same 25% pedal. (arbitrary made-up numbers for illustration). Makes the throttle signal 'less linear'.
at least that's been my understanding as I've seen it in the diesel world.
EDIT: please get rid of V4 mode if that's still kicking around in your engine
at least that's been my understanding as I've seen it in the diesel world.
EDIT: please get rid of V4 mode if that's still kicking around in your engine
Edit: My Range... will arrive Friday.
Last edited by DugT; Jul 10, 2024 at 11:09 AM.
Drifting
Joined: Dec 2019
Posts: 1,811
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From: Blacksburg Va
Also note that traction and stability control are still active in Track mode. To turn them off you hold down the center of the mode **** until the two warning lights come on in the instrument display. The parameters of how much slip sliding they allow are different sport vs track but they are still working unless you manually turn them off.
Thread Starter
Racer
Joined: Jul 2019
Posts: 444
Likes: 92
From: Truckee, CA
Also note that traction and stability control are still active in Track mode. To turn them off you hold down the center of the mode **** until the two warning lights come on in the instrument display. The parameters of how much slip sliding they allow are different sport vs track but they are still working unless you manually turn them off.
Team Owner
Joined: Sep 2000
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From: Far NW 'burbs of Chicago
St. Jude Donor '13
Our 2017 Z51 A8 will spin the tires like mad from a standing start in Sport, TC on, if I floor it coming off the line. In some autocross events where the pavement isn't very grippy, I actually choose to start in 2 to reduce wheelspin. However, the PSS tires that came standard on the car (now on third set) make virtually no noise when spinning; just engine noise and a sort of "whirring" noise from the tires.
Thread Starter
Racer
Joined: Jul 2019
Posts: 444
Likes: 92
From: Truckee, CA
I didn't try spinning the tires from a dead stop. Spinning them isn't my goal so I will take your word for it that it is easy if you set it up for that. For now, I'm trying to learn more about the stability control on this car. I knew a lot more about this when I bought this car but that was a few years ago and I'm old....
Pro
Joined: Oct 2023
Posts: 666
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From: Iowa
It still kills me that I spent $800+ to make the car drive how I wanted it to. That's a Soler TC, Soler TB, and a Range. Don't get me wrong, I love the results. 
. I normally cruise in Sport mode, SP9 on the Soler with traction control off, but I will occasionally drive in Tr with traction and stabilitrak off; kill mode so to speak.
. I normally cruise in Sport mode, SP9 on the Soler with traction control off, but I will occasionally drive in Tr with traction and stabilitrak off; kill mode so to speak.
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From: In a parallel universe. Currently own 2014 Stingray Coupe.
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I’ll echo the comments about the throttle Improvement using the Soler Throttle Controller. I have it combined with one of their throttle bodies and the change is noticeable.
Thread Starter
Racer
Joined: Jul 2019
Posts: 444
Likes: 92
From: Truckee, CA
This morning I installed a new +Range. I tested it briefly and I think it solved the problem. There is a freeway onramp where the car used to significantly pause before accelerating and there was no pause today. I drive it daily and the lack of pause was conspicuous and excellent.
I don't have any other issues with the throttle response so I think I'm going with, "If it aint broke don't fix it." I think I don't want it to be even more fun to stomp on the accelerator.
I don't have any other issues with the throttle response so I think I'm going with, "If it aint broke don't fix it." I think I don't want it to be even more fun to stomp on the accelerator.
