Question? Drive by Wire
Burning Brakes
Joined: Jun 2014
Posts: 981
Likes: 157
The very fact that you asked this question makes me think you're probably not as smart as the guys who designed the engine control system for your C7, so I suggest you give up any dreams of doing a better job than they did. More than likely, all you'll do is screw up the car and void the warranty.
Here's a hint. Look at the engine. Do you see a small flexible cable wrapped around a part of a pulley attached to something like this in the intake system? If so, it's not a drive-by-wire.
If all you see going to that part of the intake system are wires, then it's a drive-by-wire system.
Here's a hint. Look at the engine. Do you see a small flexible cable wrapped around a part of a pulley attached to something like this in the intake system? If so, it's not a drive-by-wire.
If all you see going to that part of the intake system are wires, then it's a drive-by-wire system.
Last edited by WelderGuy; Jul 31, 2016 at 12:42 PM.
E-Ray, 3LZ, ZER, LIFT
Joined: Sep 2007
Posts: 34,953
Likes: 12,364
From: NE South Carolina
and they are adjustable. Don't see how this device that fits between the power connector at the peddle can be accused of causing any warrenty issues! Some folks are paranoid re the motives of dealers or GM for their reasons for denying warrenty! 
Search the forum, a number have added these devices and report much quicker throttle response.
Last edited by JerryU; Jul 31, 2016 at 12:59 PM.
Burning Brakes
Joined: Jun 2014
Posts: 981
Likes: 157
It changes the signal delivered from the pedal to the ECU. If you design and test a complete system to properly control the engine, then change one of the input signals by adding some aftermarket garbage, you no longer know that the system will properly control the engine.
Since the purpose of the aftermarket garbage is to get the throttle to open faster, the most likely result is excessive detonation, which is an engine destroyer. GM has good grounds to void the warranty when you modify their carefully engineered systems.
Since the purpose of the aftermarket garbage is to get the throttle to open faster, the most likely result is excessive detonation, which is an engine destroyer. GM has good grounds to void the warranty when you modify their carefully engineered systems.
E-Ray, 3LZ, ZER, LIFT
Joined: Sep 2007
Posts: 34,953
Likes: 12,364
From: NE South Carolina
It changes the signal delivered from the pedal to the ECU. If you design and test a complete system to properly control the engine, then change one of the input signals by adding some aftermarket garbage, you no longer know that the system will properly control the engine.
Since the purpose of the aftermarket garbage is to get the throttle to open faster, the most likely result is excessive detonation, which is an engine destroyer. GM has good grounds to void the warranty when you modify their carefully engineered systems.
Since the purpose of the aftermarket garbage is to get the throttle to open faster, the most likely result is excessive detonation, which is an engine destroyer. GM has good grounds to void the warranty when you modify their carefully engineered systems.
If you're right and it does have an effect it, could cause a lean mixture. However a number of folks have said it works fine. Frankly I just push the throttle faster when needed!
PS: Found this info on the Sprint Booster website. Doesn't address the air/fuel ratio but cautions that it is not for everyone, quoting:
"Keep in mind, this is the same concept as the 'throttle pulley' modification on cable based throttle systems - which was very popular in it's time. It doesn't add horsepower, but makes the throttle more sensitive and makes the car 'feel' faster.
It doesn't matter if you have a Sport Mode, ECU software, or 'Chip' on your car, Sprint Booster works independently of other modifications. It simply makes the throttle more sensitive, making the car 'feel' faster.
Is Sprint Booster for everyone? Of course not, no performance product ever is. If you have a track car where you spend most of your time near redline, Sprint Booster is not for you - Sprint Booster benefits are felt in the low to mid pedal travel. Some people don't like the fact that Sprint Booster reaches full throttle before full pedal travel - if you routinely mash the throttle to the floor, Sprint Booster may not be for you.
Sprint Booster is most effective in the low to mid rpm range, which is where most 'street' cars are driven on a daily basis. Yes, you may need to adjust your driving style after installing Sprint Booster - but that is a short learning curve. Sprint Booster will put the 'fun' back into your daily drive."
Considering this info and the actual graph they publish (bottom of the two shown,) it appears to me if you have an M7 where "mashing the throttle" has no effect on the trans, that is just as easy to do when desired! In addition, I drive in Sport 95% of the time and both Sport and Track mode have the same more aggressive throttle response curve compared to Tour and ECO which are slower and Weather Mode, which is the slowest.
This is a graph shown for one of the devices, a Sprint Booster.
Another graph of the actual Sprint Booster performance vs stock from their website.
Last edited by JerryU; Jul 31, 2016 at 05:00 PM. Reason: Added Info
Pro
Joined: Aug 2011
Posts: 562
Likes: 290
From: Philly Suburbs PA
The Diablo Sport tuners can adjust the pedal, but I have a sprint booster in the C7. In fact I have some sort of controller in every car I own (have one on the way for the newest the F type R) but one(I redesigned the system in that one). I hate drive by wire hesitation. By the way I probably am smarter than the people who designed the car (it is an Asperger thing super high IQ off the charts, but terrible social skills).
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