Quicker throttle response
Race Director
Joined: Feb 2013
Posts: 12,687
Likes: 224
From: Nazareth, PA.
St. Jude Donor '17
Instructor
Joined: Feb 2016
Posts: 128
Likes: 8
From: Fountain Hills AZ
Well I don't need another 30 horse, I wanted a better throttle response and a way to go back to stock feel/economy when on long trips. This fits my needs.
Team Owner
Joined: Mar 2014
Posts: 21,631
Likes: 1,144
From: Below the bottom of Berby Hollow, NYS
Hey Old Billy, howalya? 
No plans to buy one anymore. I drive mine just like the old men that my buddies and I laughed at 50 years ago.
I step on it once in a while and that's good enough. Too lazy to do any kind of work on the car that I don't have to.
No plans to buy one anymore. I drive mine just like the old men that my buddies and I laughed at 50 years ago.
I step on it once in a while and that's good enough. Too lazy to do any kind of work on the car that I don't have to.
Last edited by Bruze; Sep 17, 2016 at 10:52 AM. Reason: Spelling
Race Director
Joined: Sep 2007
Posts: 16,557
Likes: 2,108
From: Peoria/Phoenix AZ
C6 of Year Finalist (performance mods) 2019
Race Director
Joined: Feb 2013
Posts: 12,687
Likes: 224
From: Nazareth, PA.
St. Jude Donor '17
That reminded me of the guy at my home track in 1965 that had a '65 375 hp FI Vette that was race prepped, slicks, etc and ripped up the competition every week. My '65 tri-power GTO couldn't hold a candle to that car. The name on the car was "The OLD MAN" and he was well into his 60's. To me that was really cool. Now at 75, I'm the old man that the 20-somethings come over to see at the track and ask about what I've done to run that quick.
Race Director
Joined: Sep 2007
Posts: 16,557
Likes: 2,108
From: Peoria/Phoenix AZ
C6 of Year Finalist (performance mods) 2019
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'.
Picture yourself in a 50' long room with your back to the wall. Now run as fast as you can to the other wall. Notice that it took you maybe 10' to get to full speed and you slowed down at the other end so you didn't hit the wall and go splat. That represents acceleration and deceleration ramps. Now if we put a big spring behind your back at the start, you could get up to full speed in maybe 5' and that changes the rate of acceleration. Applying that same concept to the electronic programming to start the throttle plate movement would mean quicker engine response without changing the ultimate speed. It makes no difference if you were wanting partial throttle (quick jog) or WOT (full out run), the initial burst (spring behind your back) would be the same. Push another button on the controller and you change the size of the ramp (spring behind your back). Eco mode would be like trying to push a shopping cart and you can't get to full speed for 15 or 20' depending on how much weight (like which controller button) is in the cart.
Drifting
Joined: Aug 2014
Posts: 1,944
Likes: 339
From: Mesquite, Nv
Bad analogy. You don't want an on/off switch on your car that's all or nothing, because you have no control in between.
Picture yourself in a 50' long room with your back to the wall. Now run as fast as you can to the other wall. Notice that it took you maybe 10' to get to full speed and you slowed down at the other end so you didn't hit the wall and go splat. That represents acceleration and deceleration ramps. Now if we put a big spring behind your back at the start, you could get up to full speed in maybe 5' and that changes the rate of acceleration. Applying that same concept to the electronic programming to start the throttle plate movement would mean quicker engine response without changing the ultimate speed. It makes no difference if you were wanting partial throttle (quick jog) or WOT (full out run), the initial burst (spring behind your back) would be the same. Push another button on the controller and you change the size of the ramp (spring behind your back). Eco mode would be like trying to push a shopping cart and you can't get to full speed for 15 or 20' depending on how much weight (like which controller button) is in the cart.
Picture yourself in a 50' long room with your back to the wall. Now run as fast as you can to the other wall. Notice that it took you maybe 10' to get to full speed and you slowed down at the other end so you didn't hit the wall and go splat. That represents acceleration and deceleration ramps. Now if we put a big spring behind your back at the start, you could get up to full speed in maybe 5' and that changes the rate of acceleration. Applying that same concept to the electronic programming to start the throttle plate movement would mean quicker engine response without changing the ultimate speed. It makes no difference if you were wanting partial throttle (quick jog) or WOT (full out run), the initial burst (spring behind your back) would be the same. Push another button on the controller and you change the size of the ramp (spring behind your back). Eco mode would be like trying to push a shopping cart and you can't get to full speed for 15 or 20' depending on how much weight (like which controller button) is in the cart.
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Le Mans Master
Joined: May 2016
Posts: 7,185
Likes: 1,546
From: Florida
I was onto a Vitessi controller until I decided to go FI. Now I might not. After I get the SC installed and running I'll reassess.
Although there is almost universal condemnation of the factory throttle response ramp, probably one good reason is better launch control. Even with stock 430hp and a manual shift, about all you're going to do is spin tires. The Vitessi would exacerbate that, BUT, you have the easy control of turning back to zero. At 6xxHP, the Vitessi might eternally sit at zero.
After the FI install I will do the final tune, so I will test drive the launch. Of course, FI is not coming on till midrange RPM anyway. Launches will likely remain as stock. So, one thing I want to be sensitive to, is changing the ramp at launch combined with the spooling up of the SC. I don't want to "jerk" the SC into high RPM.
BTW, I am wondering, and I have no info other than a notion, if the factory throttle response ramp changes when you switch off traction control. Anyone know? I think it could only do that with two throttle % maps and I am guessing the tune doesn't have that sophistication. I will know eventually.
Although there is almost universal condemnation of the factory throttle response ramp, probably one good reason is better launch control. Even with stock 430hp and a manual shift, about all you're going to do is spin tires. The Vitessi would exacerbate that, BUT, you have the easy control of turning back to zero. At 6xxHP, the Vitessi might eternally sit at zero.
After the FI install I will do the final tune, so I will test drive the launch. Of course, FI is not coming on till midrange RPM anyway. Launches will likely remain as stock. So, one thing I want to be sensitive to, is changing the ramp at launch combined with the spooling up of the SC. I don't want to "jerk" the SC into high RPM.
BTW, I am wondering, and I have no info other than a notion, if the factory throttle response ramp changes when you switch off traction control. Anyone know? I think it could only do that with two throttle % maps and I am guessing the tune doesn't have that sophistication. I will know eventually.
Last edited by BlindSpot; Sep 17, 2016 at 09:17 AM.
Advanced
Joined: Jul 2016
Posts: 79
Likes: 3
From: Zephyrhills Florida
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.
Race Director
Joined: Oct 2005
Posts: 14,999
Likes: 200
From: Bay Area Ca.
That reminded me of the guy at my home track in 1965 that had a '65 375 hp FI Vette that was race prepped, slicks, etc and ripped up the competition every week. My '65 tri-power GTO couldn't hold a candle to that car. The name on the car was "The OLD MAN" and he was well into his 60's. To me that was really cool. Now at 75, I'm the old man that the 20-somethings come over to see at the track and ask about what I've done to run that quick.
You know an Honda Accord or Toyota Camry will best it 0-60 nowadays.
Just saying how far technology has come along with weight savings.
Our ild muscle cars where not really that fast comparatively speaking with today's.
Still though it was a beast.
We had a local kid with a 60' Corvette that beat everyone around.
Only car he lost to, and it was big time, was a 427 original Shelby Cobra. The Cobra had near 600 hp though and of course light.
Nobody knew what the Vette owner did to prep his car.
He did work in a repair shop as a teen.
Safety Car
Joined: Nov 2007
Posts: 4,436
Likes: 875
From: Bay Area CA
I was onto a Vitessi controller until I decided to go FI. Now I might not. After I get the SC installed and running I'll reassess.
Although there is almost universal condemnation of the factory throttle response ramp, probably one good reason is better launch control. Even with stock 430hp and a manual shift, about all you're going to do is spin tires. The Vitessi would exacerbate that, BUT, you have the easy control of turning back to zero. At 6xxHP, the Vitessi might eternally sit at zero.
After the FI install I will do the final tune, so I will test drive the launch. Of course, FI is not coming on till midrange RPM anyway. Launches will likely remain as stock. So, one thing I want to be sensitive to, is changing the ramp at launch combined with the spooling up of the SC. I don't want to "jerk" the SC into high RPM.
BTW, I am wondering, and I have no info other than a notion, if the factory throttle response ramp changes when you switch off traction control. Anyone know? I think it could only do that with two throttle % maps and I am guessing the tune doesn't have that sophistication. I will know eventually.
Although there is almost universal condemnation of the factory throttle response ramp, probably one good reason is better launch control. Even with stock 430hp and a manual shift, about all you're going to do is spin tires. The Vitessi would exacerbate that, BUT, you have the easy control of turning back to zero. At 6xxHP, the Vitessi might eternally sit at zero.
After the FI install I will do the final tune, so I will test drive the launch. Of course, FI is not coming on till midrange RPM anyway. Launches will likely remain as stock. So, one thing I want to be sensitive to, is changing the ramp at launch combined with the spooling up of the SC. I don't want to "jerk" the SC into high RPM.
BTW, I am wondering, and I have no info other than a notion, if the factory throttle response ramp changes when you switch off traction control. Anyone know? I think it could only do that with two throttle % maps and I am guessing the tune doesn't have that sophistication. I will know eventually.
Last edited by Mike's LS3; Sep 17, 2016 at 02:18 PM.
Team Owner
Joined: Mar 2014
Posts: 21,631
Likes: 1,144
From: Below the bottom of Berby Hollow, NYS
I was onto a Vitessi controller until I decided to go FI. Now I might not. After I get the SC installed and running I'll reassess.
Although there is almost universal condemnation of the factory throttle response ramp, probably one good reason is better launch control. Even with stock 430hp and a manual shift, about all you're going to do is spin tires. The Vitessi would exacerbate that, BUT, you have the easy control of turning back to zero. At 6xxHP, the Vitessi might eternally sit at zero.
After the FI install I will do the final tune, so I will test drive the launch. Of course, FI is not coming on till midrange RPM anyway. Launches will likely remain as stock. So, one thing I want to be sensitive to, is changing the ramp at launch combined with the spooling up of the SC. I don't want to "jerk" the SC into high RPM.
BTW, I am wondering, and I have no info other than a notion, if the factory throttle response ramp changes when you switch off traction control. Anyone know? I think it could only do that with two throttle % maps and I am guessing the tune doesn't have that sophistication. I will know eventually.
Although there is almost universal condemnation of the factory throttle response ramp, probably one good reason is better launch control. Even with stock 430hp and a manual shift, about all you're going to do is spin tires. The Vitessi would exacerbate that, BUT, you have the easy control of turning back to zero. At 6xxHP, the Vitessi might eternally sit at zero.
After the FI install I will do the final tune, so I will test drive the launch. Of course, FI is not coming on till midrange RPM anyway. Launches will likely remain as stock. So, one thing I want to be sensitive to, is changing the ramp at launch combined with the spooling up of the SC. I don't want to "jerk" the SC into high RPM.
BTW, I am wondering, and I have no info other than a notion, if the factory throttle response ramp changes when you switch off traction control. Anyone know? I think it could only do that with two throttle % maps and I am guessing the tune doesn't have that sophistication. I will know eventually.
Le Mans Master
Joined: May 2016
Posts: 7,185
Likes: 1,546
From: Florida
And, no worries about not knowing...We help our "senior citizens" out on this site realizing that it might have "been a while"...LOL...
Last edited by BlindSpot; Sep 17, 2016 at 11:31 AM.
Melting Slicks
Joined: Dec 2014
Posts: 2,257
Likes: 433
From: Bossier City Louisiana
I went a little over board going for a better throttle response but I am very pleased. On my LS2 A4- Airaid intake, vmax ported TB, ported FAST 102, COW booster and full engine and tranny tune.
Burning Brakes
Joined: Oct 2015
Posts: 1,139
Likes: 108
From: Arlington Texas
Safety Car
Joined: Nov 2007
Posts: 4,436
Likes: 875
From: Bay Area CA
You'll see C6 FI/nitrous listed as one of the forums under Community at the far right of Corvette forum page. I.E. C6 ZR1, C6 Tech & Perf., C6 FI/Nitrous, etc.
Race Director
Joined: Sep 2007
Posts: 16,557
Likes: 2,108
From: Peoria/Phoenix AZ
C6 of Year Finalist (performance mods) 2019
I was onto a Vitessi controller until I decided to go FI. Now I might not. After I get the SC installed and running I'll reassess.
Although there is almost universal condemnation of the factory throttle response ramp, probably one good reason is better launch control. Even with stock 430hp and a manual shift, about all you're going to do is spin tires. The Vitessi would exacerbate that, BUT, you have the easy control of turning back to zero. At 6xxHP, the Vitessi might eternally sit at zero.
After the FI install I will do the final tune, so I will test drive the launch. Of course, FI is not coming on till midrange RPM anyway. Launches will likely remain as stock. So, one thing I want to be sensitive to, is changing the ramp at launch combined with the spooling up of the SC. I don't want to "jerk" the SC into high RPM.
BTW, I am wondering, and I have no info other than a notion, if the factory throttle response ramp changes when you switch off traction control. Anyone know? I think it could only do that with two throttle % maps and I am guessing the tune doesn't have that sophistication. I will know eventually.
Although there is almost universal condemnation of the factory throttle response ramp, probably one good reason is better launch control. Even with stock 430hp and a manual shift, about all you're going to do is spin tires. The Vitessi would exacerbate that, BUT, you have the easy control of turning back to zero. At 6xxHP, the Vitessi might eternally sit at zero.
After the FI install I will do the final tune, so I will test drive the launch. Of course, FI is not coming on till midrange RPM anyway. Launches will likely remain as stock. So, one thing I want to be sensitive to, is changing the ramp at launch combined with the spooling up of the SC. I don't want to "jerk" the SC into high RPM.
BTW, I am wondering, and I have no info other than a notion, if the factory throttle response ramp changes when you switch off traction control. Anyone know? I think it could only do that with two throttle % maps and I am guessing the tune doesn't have that sophistication. I will know eventually.
If you already have the Vitesse controller and HP Tuners, scan throttle position ramps at WOT (as sharply as you can hit the pedal) in each of the advance and retard modes and post or PM me the results. I'd do it myself, but I haven't purchased the Vitesse yet, nor have a close friend to borrow one from.
With a 4000 stall and Hoosiers, I hook solidly on a well prepped track to get 60' times in the 1.48-1.5 range, but if the prep is poor, retarding (extending) the ramp might be a slicker and consistent approach than soft-pedaling it.
Le Mans Master
Joined: May 2016
Posts: 7,185
Likes: 1,546
From: Florida
Assuming the Vitesse changes the ramps, and I'm convinced that's how it functions, if the zero setting still results in wheel spin, an eco mode setting will retard (actually extend) the ramp similar to, but smoother than, a 2-step. With 7 to chose from, you can compensate for road surface conditions.
If you already have the Vitesse controller and HP Tuners, scan throttle position ramps at WOT (as sharply as you can hit the pedal) in each of the advance and retard modes and post or PM me the results. I'd do it myself, but I haven't purchased the Vitesse yet, nor have a close friend to borrow one from.
With a 4000 stall and Hoosiers, I hook solidly on a well prepped track to get 60' times in the 1.48-1.5 range, but if the prep is poor, retarding (extending) the ramp might be a slicker and consistent approach than soft-pedaling it.
If you already have the Vitesse controller and HP Tuners, scan throttle position ramps at WOT (as sharply as you can hit the pedal) in each of the advance and retard modes and post or PM me the results. I'd do it myself, but I haven't purchased the Vitesse yet, nor have a close friend to borrow one from.
With a 4000 stall and Hoosiers, I hook solidly on a well prepped track to get 60' times in the 1.48-1.5 range, but if the prep is poor, retarding (extending) the ramp might be a slicker and consistent approach than soft-pedaling it.
I am working on getting my dashlogic setup with a wideband. Getting the wideband bung welded, dashlogic programmed etc, etc. Once I have AFR setup I will start datalogging the factory tune before I switch over to boosted. I might never get to datalog the Vitessi BC I haven't and might not purchase it now.