Auto Rev Matching for C6
Thread Starter
Intermediate
Joined: Sep 2013
Posts: 42
Likes: 6
From: Lafayette IN
Auto Rev Matching for C6
This falls in line with the software upgrade availability but specifically; can the drive-by-wire be tapped to allow for a GM upgrade that would provide rev matching on downshifts for C6 owners?
Race Director
Joined: Dec 2013
Posts: 12,502
Likes: 3,631
This allows you to shift way down past the point of safe to let the clutch out, down several gears, that would way over rev the motor is you the let the clutch fly (used during hard braking into a corner to get the trans in to the correct gear for this it comes time to come off the brakes, let the clutch out and get back on the gas at the same time.
Plus that the fact that you do not want to use the motor for engine breaking all all. Hence the Vet has great breaks, so use them instead.
Read,what little engine breaking would slow down the car, the engine breaking will not weight transfer the car correctly to the front end, making the normal light over steer needed for hard out of the corner on the power, just way over steer instead.
So I'm with racerx3317, and time for you to take some driving courses to learn how to drive the car correctly.
If you don't want to learn now to drive the car correctly for tracking, then sell the car and get a 997 GT-3 with PDK transmission instead. Between the PDK 7 speed trans, and a rev limit of 9K, you wont have to worry about shifting at all.
Thread Starter
Intermediate
Joined: Sep 2013
Posts: 42
Likes: 6
From: Lafayette IN
H & t
I bit tough to swallow with a few thousand track miles under my belt over the last fifteen years. Oh well, someday maybe I'll work the H&T thing out. Let me know if you ever find your way to Putnam Park Roadcourse near Indy.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Team Owner
Joined: Mar 2008
Posts: 21,502
Likes: 462
From: Southern Utah
The rev match feature was one of the few features of the C7 that really appealed to me. With the electronic throttle and the amount of computing power in a car these days, rev matching is a trivial thing to do. I think the most difficult part of retrofitting it to a C6 is that the C6 trans does not have sensors that tell the computer what gear it is in and what gear it is being shifted into. In the design phase though, these things are again, trivial. I drive mine daily and am just not tuned in to heel and toe all the time. If it was just a weekend car, then it might be easier to constantly be aware of the need to heel and toe, but sitting back and cruising for 400 miles means relaxing and enjoying some music etc. Rev matching would have a significant impact on clutch wear also...another positive.
Tech Contributor
Joined: Jul 2002
Posts: 14,950
Likes: 264
From: St. Louis, MO
St. Jude Donor '08
The c6 knows what gear you are in. The rev limiter and several other tables are gear dependent.
There is no table that we users can access to adjust the throttle opening line those needed to do the rev match like that. Control over those tables in the wrong hands could easily cause an accident if he throttle opens when it's not supposed to.
There is no table that we users can access to adjust the throttle opening line those needed to do the rev match like that. Control over those tables in the wrong hands could easily cause an accident if he throttle opens when it's not supposed to.
Team Owner
Joined: Mar 2008
Posts: 21,502
Likes: 462
From: Southern Utah
The really important part of the rev matching system though is the computer knowing what gear you are starting to push the shift lever towards, and the C6 computer has no way of knowing that. The current gear can be easily computed by speed and rpm, two variables that the computer is always aware of.
Tech Contributor
Joined: Jul 2002
Posts: 14,950
Likes: 264
From: St. Louis, MO
St. Jude Donor '08
The really important part of the rev matching system though is the computer knowing what gear you are starting to push the shift lever towards, and the C6 computer has no way of knowing that. The current gear can be easily computed by speed and rpm, two variables that the computer is always aware of.
Race Director
Joined: May 2004
Posts: 16,667
Likes: 1,209
From: Raleigh, NC
St. Jude Donor '15
There are no sensors on the T56 that tell what gear it's in (aside from reverse). If it does in fact use these tables on the manual transmission cars, it's doing it from calculating RPM vs. speed, not from reading a sensor. Some things say the M6's don't use the different gear rows of the tables you're talking about, some disagree. I haven't tested it so I don't really know
Regardless, those calculations aren't going to work prior to letting the clutch out, which is exactly when you need them in order for for rev matching to work on the M6
Drifting
Joined: Apr 2006
Posts: 1,786
Likes: 336
From: New York New York
If you can do it yourself then why would you want to install this? Not trying to be a jerk but I don't get it. For me the less electronics the better. Putnam is a bit far for me. I prefer Lime Rock Park
Melting Slicks
Joined: Jul 2004
Posts: 2,721
Likes: 149
From: North Carolina
I can heel-and-toe well but also have an auto-blip installed. It is simple, relatively inexpensive and works well. Sometimes I use it, sometimes I don't. I like having the option.
To me, it is no different than adding coil-overs, more HP or any other modification intended to make you faster on the track.
To me, it is no different than adding coil-overs, more HP or any other modification intended to make you faster on the track.
Melting Slicks
Joined: Jul 2007
Posts: 2,146
Likes: 31
From: Minot North Dakota
St. Jude Donor '12-'13-'14-'15, '21
explain heel toe, and if you feel like saying go search for it or I’m beating a dead horse or anything other than a quick explanation don’t bother responding. I may be doing it already and just didn’t know what to call it.