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Quicker throttle response
Thread Starter
Pro
Joined: Sep 2016
Posts: 640
Likes: 146
From: Texas
Quicker throttle response
What options are out there to make our dbw cars feel more like a dbc? Im not interested in one of those throttle "boosters" I'm looking for something that eliminates the lag from pedal blip to engine rev. Do I acquire this via a tune, or does someone make a PNP module? Most threads I searched are yielding older results with stuff im sure outdated now
Safety Car
Joined: May 2012
Posts: 4,259
Likes: 628
From: Tempe Arizona
St. Jude Donor '22-'23-'24
I actually just had my car tuned to help reduce this lag. I was able to get the lag reduced by about 50% from the mushy factory settings. I am sure there is a capable tuner who can do the same for you in the Dallas area.
It took my guy about 1 hour and cost me $300 for comparison.
It took my guy about 1 hour and cost me $300 for comparison.
Team Owner
Joined: Mar 2014
Posts: 21,631
Likes: 1,144
From: Below the bottom of Berby Hollow, NYS
What options are out there to make our dbw cars feel more like a dbc? Im not interested in one of those throttle "boosters" I'm looking for something that eliminates the lag from pedal blip to engine rev. Do I acquire this via a tune, or does someone make a PNP module? Most threads I searched are yielding older results with stuff im sure outdated now
Instructor
Joined: Feb 2016
Posts: 128
Likes: 8
From: Fountain Hills AZ
Since the ecm controls the throttle motor the only way to get it to move quicker it to trick the throttle sensor. Modify the program and you are stuck with that setting. A controller is fully adjustable and you can go from one extreme to the other on the fly.
I just installed one of the Vitesse units last night and I was really impressed today when I drove the car. 5 and up setting is pretty amazing as I would never thought it would work without issues.
http://www.vitesse-motorsports.com/t...orvette-c6.htm
I just installed one of the Vitesse units last night and I was really impressed today when I drove the car. 5 and up setting is pretty amazing as I would never thought it would work without issues.
http://www.vitesse-motorsports.com/t...orvette-c6.htm
Last edited by Beltfedbob; Sep 16, 2016 at 06:27 PM.
Team Owner
Joined: Mar 2014
Posts: 21,631
Likes: 1,144
From: Below the bottom of Berby Hollow, NYS
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Thread Starter
Pro
Joined: Sep 2016
Posts: 640
Likes: 146
From: Texas
The vitesse and cow booster just alter the pedal position to my knowledge, they don't necessarily increase response time. All they do is basically 10% normal pedal is now 30%, or 30% is now 90%. I know in my last car switching from a dual mass to a single mass flywheel really helped since it was a lot lighter.
Race Director
Joined: Sep 2007
Posts: 16,557
Likes: 2,108
From: Peoria/Phoenix AZ
C6 of Year Finalist (performance mods) 2019
The vitesse and cow booster just alter the pedal position to my knowledge, they don't necessarily increase response time. All they do is basically 10% normal pedal is now 30%, or 30% is now 90%. I know in my last car switching from a dual mass to a single mass flywheel really helped since it was a lot lighter.
My reasoning is based on the ability to slow down (retard) the process in the eco mode. i.e. you can slam the pedal to the max and it doesn't open the throttle plate instantly. Creating a long acceleration ramp can do that, but just a simple pedal to plate relationship can't.
Knowing the OEM ramp values, placing a variable modifier between the pedal output and the ECM, sounds like what the Vitesse does.
The only question is, how long will the stepper motor survive along with the mechanical drive when the unit is set to the higher end?
Safety Car
Joined: Feb 2007
Posts: 4,684
Likes: 107
From: Opelika Alabama
Since the ecm controls the throttle motor the only way to get it to move quicker it to trick the throttle sensor. Modify the program and you are stuck with that setting. A controller is fully adjustable and you can go from one extreme to the other on the fly.
I just installed one of the Vitesse units last night and I was really impressed today when I drove the car. 5 and up setting is pretty amazing as I would never thought it would work without issues.
http://www.vitesse-motorsports.com/t...orvette-c6.htm
I just installed one of the Vitesse units last night and I was really impressed today when I drove the car. 5 and up setting is pretty amazing as I would never thought it would work without issues.
http://www.vitesse-motorsports.com/t...orvette-c6.htm
Race Director
Joined: Dec 2013
Posts: 12,502
Likes: 3,631
Your dealing with three areas in throttle mapping,
Percentage amount of throttle opening to depression of accelerator pedal.
Does not become linear until the pedal is pretty much all the way down, as say the pedal half way down, the TB is only open about 30%.
Reaction time of the TB is self in how fast it will move.
Movement speed of the TB movement itself.
Delay response of the accelerator input, to the initial movement TB itself.
Hence used to keep the car from bucking, and even to improve gas mileage.
Now over on the Torque management side, let just say that GM has the motor hobble to hell in regards to the amount of power instantly it will put down to the ground, in order to save damage to the drive line.
Can all this be change, Yes!!!!!
The glitch, your de-soccer mom'g the car, which GM did to make it drive-able in anyone less than a profession race drivers hands isntead.
Percentage amount of throttle opening to depression of accelerator pedal.
Does not become linear until the pedal is pretty much all the way down, as say the pedal half way down, the TB is only open about 30%.
Reaction time of the TB is self in how fast it will move.
Movement speed of the TB movement itself.
Delay response of the accelerator input, to the initial movement TB itself.
Hence used to keep the car from bucking, and even to improve gas mileage.
Now over on the Torque management side, let just say that GM has the motor hobble to hell in regards to the amount of power instantly it will put down to the ground, in order to save damage to the drive line.
Can all this be change, Yes!!!!!
The glitch, your de-soccer mom'g the car, which GM did to make it drive-able in anyone less than a profession race drivers hands isntead.
Last edited by Dano523; Sep 16, 2016 at 08:46 PM.
Drifting
Joined: Aug 2014
Posts: 1,944
Likes: 339
From: Mesquite, Nv
Imagine you have the standard outside water spicket (rotary) which we'll equate to the gas pedal. The water coming out of the valve is the horse power. It takes two or three rotations of the valve to fully unleash the full blast (h.p.) of the water. This is an analogy of the stock Corvette factory set up.
Would you like a device on your water spicket that you could install to get the maximum amount of water immediatly upon your first "C" hair twist of the valve instead of having to turn it several times?
Just sayin'.
Would you like a device on your water spicket that you could install to get the maximum amount of water immediatly upon your first "C" hair twist of the valve instead of having to turn it several times?
Just sayin'.
Le Mans Master
Joined: Jan 2008
Posts: 6,457
Likes: 297
From: corpus christi Texas
I already had a Dyno tune on my 08, and later I put on a V-Max ported and polished Tb.The first hit of the start button I heard the different and on the street it made a Hugh different on better response. I'm not going to put anything on my vette that messes with the ecm.