Two Throttle Questions

Blazin383 · 03-28-2016, 02:05 PM

I have a couple questions regarding the throttle response on my 2SS A8.

First, I've seen a couple test drive videos where they comment on the dead spot at the top of the throttle. This seems to be present on all of the different engine options. I hadn't noticed it during casual driving, but yesterday, for the first time, I held the car in a lower gear, brought the rpms up, and did a few quick throttle blips. There is definitely a very obvious dead zone for the first inch or so of throttle travel. Anyone else experience this, understand what causes it, or know if there is a fix for it?

Secondly, a couple times I've had people that want to hear the exhaust while the car is sitting still. When I start the car and blip the throttle a few times it is very responsive to the first couple blips, but after if the rpms are above idle it's like the engine doesn't even respond to the throttle input. Anyone else experience this?

Sev · 03-28-2016, 02:15 PM

There are aftermarket throttle contollers that resolve the "dead zone" issue. Do a search and you'll find sledgehammers thread about the one he installed.

cellsafemode · 03-28-2016, 03:46 PM

The only aftermarket throttle controller i've heard of seems to operate by reducing the travel. This wouldn't eliminate just the dead zone at the initial point of travel that the OP is mentioning, it would just make it smaller (perhaps too small to matter) but it would also affect the rest of the throttle travel.

The only way to correctly fix just this dead zone seems to still be tuning it out.

1badrwd · 03-28-2016, 04:05 PM

Your wanting to get a vitesse throttle controller. I have a A8 and it worked wonders on throttle response. Basically it changes the input voltage sent to the throttle. There are setting ranging from SP-0 to SP-9. SP-0 being just like stock and SP-9 being a super touchy throttle. Most find that SP-4 thru SP-6 to be the sweet spot for eliminating lag and increasing response. If you look under the bolt on's section there's a thread about the controller.

1badrwd · 03-28-2016, 04:06 PM

Found the thread: http://www.camaro6.com/forums/showthread.php?t=435277

Techn9cian805 · 03-28-2016, 04:16 PM

Quote:

Originally Posted by cellsafemode

The only aftermarket throttle controller i've heard of seems to operate by reducing the travel. This wouldn't eliminate just the dead zone at the initial point of travel that the OP is mentioning, it would just make it smaller (perhaps too small to matter) but it would also affect the rest of the throttle travel.

The only way to correctly fix just this dead zone seems to still be tuning it out.

This. I hate the dead zone on my m6 ss, its annoying as hell.

The Idiocracy · 03-28-2016, 04:27 PM

I've posted on this before. I'm not knocking the Vitesse product at all. But here is some info I sought from the proverbial horses mouth.

http://www.camaro6.com/forums/showpo...1&postcount=63

raptor5244 · 03-28-2016, 06:22 PM

Quote:

Originally Posted by Techn9cian805

This. I hate the dead zone on my m6 ss, its annoying as hell.

Sorry to hear it is the same on the M6. I know you have Auto Rev Match now but having that dead zone and trying to blip the throttle yourself for rev match would be annoying.

Is this new to the LT1 throttle map? I don't experience this on my Gen5 1LE.

Blazin383 · 03-28-2016, 10:24 PM

Quote:

Originally Posted by The Idiocracy

I've posted on this before. I'm not knocking the Vitesse product at all. But here is some info I sought from the proverbial horses mouth.

http://www.camaro6.com/forums/showpo...1&postcount=63

Hummm.... I read your other post and find it very interesting, especially since I've never experienced that before on any car I've had, including multipal Vettes. Seems odd that a "dead zone" in the initial tip in of the throttle would be necessary to keep from upsetting the chassis, especially a chassis as good as this one, but I do know there are some very smart people who design these systems. I still don't like it!

Blazin383 · 03-28-2016, 10:26 PM

What about the reving and lack of throttle response in neutral (park)? Anyone experience this phenomenon?

laynlo15 · 03-28-2016, 10:41 PM

I know you guys call it a dead zone, but it's not dead at the track. If so maybe someone can explain my 1.79 and 1.81 60ft times with stock tires. Maybe GM did it so you don't just blow the tires off at the hit of the throttle. Some who have added the Vitesse complain its not that easy to control the throttle reponse. I've not tried one so I can't verify this myself. If they really work it would seem it might even make the 60ft times quicker then they are now.

Snowblind · 03-28-2016, 11:04 PM

Quote:

Originally Posted by Blazin383

What about the reving and lack of throttle response in neutral (park)? Anyone experience this phenomenon?

Yup, had it and hated it. I bought the throttle controller and problem solved, it's money well spent.

Medic701 · 03-28-2016, 11:09 PM

http://vitesse-motorsports.com/throt...orvette-c7.htm

cellsafemode · 03-29-2016, 12:15 AM

There are a couple things going on here that are maybe confusing things.

1. the "dead zone" i think the op is referring to occurs when you gradually just touch the throttle as if you were say coasting and wanted to give it what you would assume would be enough throttle to raise the rpms but in certain situations doesn't seem to. This "dead zone" at the beginning of throttle travel is not going to be fixed by the vitesse unless they have offset the resting state of the peddle position sensor and it's very possible they are doing that and it would make sense then why they're completely illegal to use on public roads because a slight error in tolerance between their product and your OEM sensor could make the resting state of the peddle sensor > 0% and start moving your car forward greater than expected or keep the car from being stopped by the emergency break at rest. That last part would fail you in safety inspections.

2. there is a perceived "dead zone" that some people have with the peddle in that a little movement doesn't equate to much of a change at all in throttle response. The vitesse controller reduces this to varying degrees based on the setting so that a little movement creates greater and greater changes in the effective peddle position sensor output. This also though, gives you the perception that it fixed the #1 issue but only because it's reduced the range that #1 is in effect to such a short distance that you can't physically move the peddle little enough to recreate it. The part i have a problem with this solution though is that it reduces the resolution of the peddle position sensor for the rest of the travel as well. Making it more difficult to keep a steady speed. This reduces gas mileage and can make driving at the highest speed without catching the attention of police a bit more hairy.

Not saying that S1 etc wouldn't be perfectly driveable and you couldn't maintain your speed after getting used to it. Just that it's not a solution, it just seems to be a mask (illegal one but whatever i guess). So far the only way I've heard about to fix the issue is tuning it out, but then that risks your warranty i guess.

03-28-2016, 02:15 PM	#2
Sev Drives: 2016 2SS / 2004 Tacoma Join Date: Feb 2016 Location: Meadow Vista, CA Posts: 795	There are aftermarket throttle contollers that resolve the "dead zone" issue. Do a search and you'll find sledgehammers thread about the one he installed. __________________ 2SS, Manual, Blue Velvet Metallic, Medium Ash Grey, Black Wheels, MRC, NPP, Black Bowties, Black GM Tail Lights, Oracle LED side markers. "I'm going to drink you pretty, beautiful toad"

03-28-2016, 04:05 PM	#4
1badrwd Drives: 2016 camaro 2ss npp, A8 Join Date: Feb 2016 Location: Missouri Posts: 137	Your wanting to get a vitesse throttle controller. I have a A8 and it worked wonders on throttle response. Basically it changes the input voltage sent to the throttle. There are setting ranging from SP-0 to SP-9. SP-0 being just like stock and SP-9 being a super touchy throttle. Most find that SP-4 thru SP-6 to be the sweet spot for eliminating lag and increasing response. If you look under the bolt on's section there's a thread about the controller. __________________ 2016 2ss- CAI, Ported TB, MSD intake, StainlessWorks LT headers & full exhaust- no cats, HP custom tune. M228 wheels, michelin pilot super sports 285/35/20 front, 305/30/20 back To be American is to love the flag, women, and sports cars!

03-28-2016, 04:06 PM	#5
1badrwd Drives: 2016 camaro 2ss npp, A8 Join Date: Feb 2016 Location: Missouri Posts: 137	Found the thread: http://www.camaro6.com/forums/showthread.php?t=435277 __________________ 2016 2ss- CAI, Ported TB, MSD intake, StainlessWorks LT headers & full exhaust- no cats, HP custom tune. M228 wheels, michelin pilot super sports 285/35/20 front, 305/30/20 back To be American is to love the flag, women, and sports cars!

03-28-2016, 10:41 PM	#11
laynlo15 Drives: 2022 Lt1 A10 Join Date: Nov 2015 Location: clark, mo Posts: 8,873	I know you guys call it a dead zone, but it's not dead at the track. If so maybe someone can explain my 1.79 and 1.81 60ft times with stock tires. Maybe GM did it so you don't just blow the tires off at the hit of the throttle. Some who have added the Vitesse complain its not that easy to control the throttle reponse. I've not tried one so I can't verify this myself. If they really work it would seem it might even make the 60ft times quicker then they are now. __________________ 2022 Lt1 6.2 A10, Maggie 2300, THPSI Port Inj/10 rib, Rotofab, E, Nickey, SCOL, Griptech, RC Bandits, Hoosiers/MT 9.80@142.96 1.44 60ft, 6.34@112 707/669 RWHP/TRQ. 16SS Maggie 2650 9.41@147 1.35 60ft, 5.99@119. 16 C7 A8 10.90@128 Bolt on stuff

03-28-2016, 02:05 PM	#1
Blazin383 Drives: 2016 SS Join Date: Mar 2016 Location: Richland WA Posts: 451	Two Throttle Questions I have a couple questions regarding the throttle response on my 2SS A8. First, I've seen a couple test drive videos where they comment on the dead spot at the top of the throttle. This seems to be present on all of the different engine options. I hadn't noticed it during casual driving, but yesterday, for the first time, I held the car in a lower gear, brought the rpms up, and did a few quick throttle blips. There is definitely a very obvious dead zone for the first inch or so of throttle travel. Anyone else experience this, understand what causes it, or know if there is a fix for it? Secondly, a couple times I've had people that want to hear the exhaust while the car is sitting still. When I start the car and blip the throttle a few times it is very responsive to the first couple blips, but after if the rpms are above idle it's like the engine doesn't even respond to the throttle input. Anyone else experience this?

03-28-2016, 03:46 PM	#3
cellsafemode Drives: 2016 Camaro 1LT Join Date: Jan 2016 Location: California Posts: 3,493	The only aftermarket throttle controller i've heard of seems to operate by reducing the travel. This wouldn't eliminate just the dead zone at the initial point of travel that the OP is mentioning, it would just make it smaller (perhaps too small to matter) but it would also affect the rest of the throttle travel. The only way to correctly fix just this dead zone seems to still be tuning it out.

03-28-2016, 04:27 PM	#7
The Idiocracy Drives: 2016 Black SS Join Date: Dec 2015 Location: Michigan Posts: 234	I've posted on this before. I'm not knocking the Vitesse product at all. But here is some info I sought from the proverbial horses mouth. http://www.camaro6.com/forums/showpo...1&postcount=63

03-28-2016, 10:26 PM	#10
Blazin383 Drives: 2016 SS Join Date: Mar 2016 Location: Richland WA Posts: 451	What about the reving and lack of throttle response in neutral (park)? Anyone experience this phenomenon?

03-28-2016, 11:09 PM	#13
Medic701 Drives: 2017 ZL1 Join Date: Dec 2015 Location: NM Posts: 352	http://vitesse-motorsports.com/throt...orvette-c7.htm

03-29-2016, 12:15 AM	#14
cellsafemode Drives: 2016 Camaro 1LT Join Date: Jan 2016 Location: California Posts: 3,493	There are a couple things going on here that are maybe confusing things. 1. the "dead zone" i think the op is referring to occurs when you gradually just touch the throttle as if you were say coasting and wanted to give it what you would assume would be enough throttle to raise the rpms but in certain situations doesn't seem to. This "dead zone" at the beginning of throttle travel is not going to be fixed by the vitesse unless they have offset the resting state of the peddle position sensor and it's very possible they are doing that and it would make sense then why they're completely illegal to use on public roads because a slight error in tolerance between their product and your OEM sensor could make the resting state of the peddle sensor > 0% and start moving your car forward greater than expected or keep the car from being stopped by the emergency break at rest. That last part would fail you in safety inspections. 2. there is a perceived "dead zone" that some people have with the peddle in that a little movement doesn't equate to much of a change at all in throttle response. The vitesse controller reduces this to varying degrees based on the setting so that a little movement creates greater and greater changes in the effective peddle position sensor output. This also though, gives you the perception that it fixed the #1 issue but only because it's reduced the range that #1 is in effect to such a short distance that you can't physically move the peddle little enough to recreate it. The part i have a problem with this solution though is that it reduces the resolution of the peddle position sensor for the rest of the travel as well. Making it more difficult to keep a steady speed. This reduces gas mileage and can make driving at the highest speed without catching the attention of police a bit more hairy. Not saying that S1 etc wouldn't be perfectly driveable and you couldn't maintain your speed after getting used to it. Just that it's not a solution, it just seems to be a mask (illegal one but whatever i guess). So far the only way I've heard about to fix the issue is tuning it out, but then that risks your warranty i guess.

User Name		Remember Me?
Password