Anyone noticed a slight delay when hitting the accelerator?
Drifting
Joined: Aug 2014
Posts: 1,497
Likes: 682
I am not not sure if Sprint Booster makes a version for the C7 but it's a pretty amazing mod that takes away all throttle lag. It does not actually add any HP but the throttle response is controlled by a 3 button LED switch with three different modes. Off, Fast and Faster. I love it on my Benz and would buy one for my C7. On the Mercedes Forum they offered a "group buy". Highly recommend it. Takes about 20 minutes to install. Hope this helps.
Here's the website:
https://www.sprintboosterusa.com/p-3...rvette-c7.aspx
https://www.sprintboosterusa.com/p-3...rvette-c7.aspx
Hmmmmmm... But what would you recommend for throttle lag?
Because the last page here says the booster doesn't do what it claims...
http://www.crosslake.net/~dbipes/spr...intBooster.pdf
Last edited by Z06 1of38; Jul 13, 2015 at 10:10 PM.
Safety Car
Joined: May 2003
Posts: 3,814
Likes: 105
From: Dearborn Heights Michigan
[QUOTE=Z06 1of38;1590043442]Hmmmmmm... But what would you recommend for throttle lag?
Because the last page here says the booster doesn't do what it claims...
Don't care what that paper says, mine works.
Could be the Mercedes it is based on?
Because the last page here says the booster doesn't do what it claims...
Don't care what that paper says, mine works.
Could be the Mercedes it is based on?
Tech Contributor
Joined: Jan 2006
Posts: 4,761
Likes: 240
From: Saint Louis MO
St. Jude Donor '14-'15
SprintBooster simply fools the TPS sensor - nothing more, nothing less. You're applying what used to be 20% TPS, and with the addition of the SprintBooster, the car may see 40% (or another arbitrary number). I'm sure someone will call me out on this, but I'm just going to smile and nod - take one apart. 
I have three of them (yes, three) - they work on many cars that have drive-by-wire lag by simply fooling your butt dyno. The same feeling could be accomplished by mashing the pedal harder, but psychologically, the result of pressing the pedal lightly and getting the heavy pedal feel really does please a lot of people.
Why do I have three of these? Two were from Gen 1 supercharged MINIs that benefited greatly from them even after being tuned (talk about yo-yo effects on those TBs), and another was from an older SRT that had issues with setting TPS correctly in the tune.
Bottom line is that as long as you're okay with knowing how they work and/or you simply enjoy the way it feels, it's a cheap way to get that 'oomph' feeling without dealing with a tune to correct the soft TPS.
I have three of them (yes, three) - they work on many cars that have drive-by-wire lag by simply fooling your butt dyno. The same feeling could be accomplished by mashing the pedal harder, but psychologically, the result of pressing the pedal lightly and getting the heavy pedal feel really does please a lot of people.
Why do I have three of these? Two were from Gen 1 supercharged MINIs that benefited greatly from them even after being tuned (talk about yo-yo effects on those TBs), and another was from an older SRT that had issues with setting TPS correctly in the tune.
Bottom line is that as long as you're okay with knowing how they work and/or you simply enjoy the way it feels, it's a cheap way to get that 'oomph' feeling without dealing with a tune to correct the soft TPS.
Le Mans Master
Joined: Aug 2004
Posts: 5,259
Likes: 16
From: Monroe Township New Jersey
St. Jude Donor '05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15-'16
St. Jude donor in memory of jpee '14
Theta Excellent point on the sprint booster works 
But most of you can just press the pedal a bit harder and it is free.
All kidding aside, I do not think the throttle ramp up rate is the issue.
There are many reasons a car is non responsive. When does it happen, how often, what are the driving conditions & etc.
I have a similar issue after several trips to the dealer without a fix. I decided to do my own thing. My 2014 does not like very hot days running at operating temperature. It will bog, sputter and drive like crap.
I data logged the car it appeared to heat soak and pull timing like crazy. Once it got a bit cooler out I noticed a difference the car was fine..... go figure.
So for me heat was the issue. It may not be the same with other cars but most of the time it is not throttle response, just press harder on the go pedal...... and btw once again it is for free
But most of you can just press the pedal a bit harder and it is free.
All kidding aside, I do not think the throttle ramp up rate is the issue.
There are many reasons a car is non responsive. When does it happen, how often, what are the driving conditions & etc.
I have a similar issue after several trips to the dealer without a fix. I decided to do my own thing. My 2014 does not like very hot days running at operating temperature. It will bog, sputter and drive like crap.
I data logged the car it appeared to heat soak and pull timing like crazy. Once it got a bit cooler out I noticed a difference the car was fine..... go figure.
So for me heat was the issue. It may not be the same with other cars but most of the time it is not throttle response, just press harder on the go pedal...... and btw once again it is for free
Melting Slicks
Joined: Sep 1999
Posts: 2,305
Likes: 87
From: Richmond, BC, Canada
Originally Posted by jwbert
If you put the car in track mode, then race configuration (all nannies off) the slight lag in throttle response goes away.
I have proven this. They call it PTM (Performance Traction Management).
In any of the 5 "sub modes" of "Track" (including "Race"),
the PTM is still active and doing things.
Even in "Race" sub mode, it is still working.
The only way to turn all the "nannies" off, is to press and hold the center
button for about 5 to 6 seconds, so the Traction Control and Active Handling
lights come on, to advise that these systems are now disabled.
Then, just leave things alone, and drive it.
I originally thought things were as you mentioned, and spent my first 8 or 10
Autocrosses in that mode. But I was wondering why there was a "bog" when
accelerating out of a corner.
Then I discovered the "secret" I mentioned above.
Just disable those 2 systems, and you now get immediate and full
throttle response (MN7).
Of course, you must now be somewhat judicious in the application
of the "go" pedal, or you will spin those rear tires.
