Rev limiter issues assistance needed.
Thread Starter
Safety Car
Joined: Jan 2008
Posts: 4,711
Likes: 3
From: Middle of No where AK
Rev limiter issues assistance needed.
OK I took the car to the track today and Im torching the rev limiter on my 2-3 shift. I have an A4 with 3.42 gears HCI etc etc etc. Anyway I dropped the command WOT shift MPH about 5-6mph and it still did it. I also dropped the command shift rpm by about 300rpm still does it. I also checked the shift pressure (I have a shift kit) and its at max. I made sure that the tire size was correctly scaled etc. Anyway what should I do to fix this? Do I just keep dropping the MPH untill it shifts like its supposed to?
Thanks for your help.
Thanks for your help.
Thread Starter
Safety Car
Joined: Jan 2008
Posts: 4,711
Likes: 3
From: Middle of No where AK
Yeah thats what I changed. I dropped that by several mph and it still does it. I believe the starting command MPH was 51 mph on the 2-3 and I dropped it down to 43 or 42 on the final run and it still hit the rev limiter. So thats what Im asking I guess do I just keep dropping it? My 1-2 command is 31 or 33 MPH and that shift is fine.
Last edited by c6 batmobile; Feb 28, 2010 at 10:41 PM.
Thread Starter
Safety Car
Joined: Jan 2008
Posts: 4,711
Likes: 3
From: Middle of No where AK
My WOT shift RPM was set to 6400 I knocked it down at the track to 6200 and 6100. I know when you are at WOT your commanded shift goes off the MPH table but I would have though bringing that table down by 8 MPH would have solved the shift issue. This has happened before but 2 or 3 MPH fixed it. I would look at the old tune but my tuner wrote over it and is no longer in his shop and Im pretty sure he didnt save it either
.
I did send subfloor a PM so hopefully Ill hear back from him soon.
. I did send subfloor a PM so hopefully Ill hear back from him soon.
Melting Slicks
Joined: Jul 2007
Posts: 3,097
Likes: 5
From: Brentwood World's first A6 in the 9's (including N/A, blower, turbo and nitrous cars) 9.950@139.267 CA
My WOT shift RPM was set to 6400 I knocked it down at the track to 6200 and 6100. I know when you are at WOT your commanded shift goes off the MPH table but I would have though bringing that table down by 8 MPH would have solved the shift issue. This has happened before but 2 or 3 MPH fixed it. I would look at the old tune but my tuner wrote over it and is no longer in his shop and Im pretty sure he didnt save it either.
I did send subfloor a PM so hopefully Ill hear back from him soon.
. I did send subfloor a PM so hopefully Ill hear back from him soon.
Christopher
Premium Supporting Vendor
Joined: Oct 2004
Posts: 23,599
Likes: 1,226
From: Providing the most proven supercharger kits for your C5/6/7 609-752-0321
I'm sure Chris will have you fixed up anyway, but did you notice (or log) what your MPH was as you were hitting the limiter?
Thread Starter
Safety Car
Joined: Jan 2008
Posts: 4,711
Likes: 3
From: Middle of No where AK
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
5 Best & 5 Worst Corvette Daily Drivers
Joe Kucinski
The Headlights of Every Corvette Generation Explained
Joe Kucinski
5 Best & 5 Most Overrated Corvette Track Packages of All Time!
Joe Kucinski
Every 2027 Corvette Engine Explained
Joe Kucinski
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Verdad Gallardo
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski
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
Thread Starter
Safety Car
Joined: Jan 2008
Posts: 4,711
Likes: 3
From: Middle of No where AK
Got your email and changed some of the values you suggested. The shift press properties you suggested are up because of the shift kit. They are supposed to make the shifts happen faster. I can turn them back down but Im not sure that is going to make a difference. Im gonna have to make a run on the street to see if those values made a difference.
Premium Supporting Vendor
Joined: Oct 2004
Posts: 23,599
Likes: 1,226
From: Providing the most proven supercharger kits for your C5/6/7 609-752-0321
If your logged speedo and actual speedometer are not working properly, the car will not shift correctly since the MPH criteria is unknown. Oddly enough that has happened to me with an 05 as well, after I fixed the VSS sensor, the car shifted fine.
Thread Starter
Safety Car
Joined: Jan 2008
Posts: 4,711
Likes: 3
From: Middle of No where AK
Edit. Found it. Gonna get this replaced ASAP
Last edited by c6 batmobile; Mar 2, 2010 at 10:30 PM.