Automatic Transmission Tuning
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Joined: Sep 2005
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From: Taylorsville UT
Automatic Transmission Tuning
After driving my automatic Corvette for a while now I notice that it seems hesitant to down shift when entering corners quickly and so I come out of the corner in the wrong gear and feeling quite slugish. Is there any kind of programming that can be done to the transmission to change it's behavior as far as down shifting goes?
Le Mans Master
Joined: Jun 2006
Posts: 6,478
Likes: 20
From: guthrie oklahoma
After driving my automatic Corvette for a while now I notice that it seems hesitant to down shift when entering corners quickly and so I come out of the corner in the wrong gear and feeling quite slugish. Is there any kind of programming that can be done to the transmission to change it's behavior as far as down shifting goes?
Tech Contributor
Joined: Dec 2003
Posts: 19,384
Likes: 87
From: Horncastle Lincolnshire, England
2023 C5 of the Year Finalist - Unmodified
I notice the same problem and like you I find it frustrating. I normally downshift manually for a series of bends to keep more control over the shift points.
In my case its not mileage related. Its always been that way and I've only got 39k. Not ready for a flush just yet.
In my case its not mileage related. Its always been that way and I've only got 39k. Not ready for a flush just yet.
Le Mans Master
Joined: May 2006
Posts: 7,867
Likes: 252
From: Hillsboro OR
I had mine tuned by a CF member. 
We moved all of the upshift points higher up the RPM band. We moved all of the downshift points further down the RPM band. Shortened the shift times to .25 sec. Now it feels like a sports car. When I'm just cruisin' down the street all I need to do is push the loud pedal ~1/4". 
It immediately downshifts and off I go. This is also true when exiting a turn. 
I HIGHLY recommend that anyone with an A4 do this.
We moved all of the upshift points higher up the RPM band. We moved all of the downshift points further down the RPM band. Shortened the shift times to .25 sec. Now it feels like a sports car. When I'm just cruisin' down the street all I need to do is push the loud pedal ~1/4". It immediately downshifts and off I go. This is also true when exiting a turn. I HIGHLY recommend that anyone with an A4 do this.
Burning Brakes
Joined: Jan 2006
Posts: 900
Likes: 38
From: Waunakee Wisconsin
St. Jude Donor '20
I had mine tuned by a CF member. We moved all of the upshift points higher up the RPM band. We moved all of the downshift points further down the RPM band. Shortened the shift times to .25 sec. Now it feels like a sports car. When I'm just cruisin' down the street all I need to do is push the loud pedal ~1/4". It immediately downshifts and off I go. This is also true when exiting a turn. I HIGHLY recommend that anyone with an A4 do this.
We moved all of the upshift points higher up the RPM band. We moved all of the downshift points further down the RPM band. Shortened the shift times to .25 sec. Now it feels like a sports car. When I'm just cruisin' down the street all I need to do is push the loud pedal ~1/4". It immediately downshifts and off I go. This is also true when exiting a turn. I HIGHLY recommend that anyone with an A4 do this. 
Team Owner
Joined: May 2005
Posts: 23,682
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From: Flagstaff Az.
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Burning Brakes
Joined: Nov 2007
Posts: 1,241
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From: Oceanside New York
I had mine tuned by a CF member. We moved all of the upshift points higher up the RPM band. We moved all of the downshift points further down the RPM band. Shortened the shift times to .25 sec. Now it feels like a sports car. When I'm just cruisin' down the street all I need to do is push the loud pedal ~1/4". It immediately downshifts and off I go. This is also true when exiting a turn. I HIGHLY recommend that anyone with an A4 do this.
We moved all of the upshift points higher up the RPM band. We moved all of the downshift points further down the RPM band. Shortened the shift times to .25 sec. Now it feels like a sports car. When I'm just cruisin' down the street all I need to do is push the loud pedal ~1/4". It immediately downshifts and off I go. This is also true when exiting a turn. I HIGHLY recommend that anyone with an A4 do this.
Le Mans Master
Joined: May 2006
Posts: 7,867
Likes: 252
From: Hillsboro OR
I didn't notice any change my mpg after the trans tune. The 3:42's and the 2800 stall dropped me to ~16 mpg in the city. That was done quite a while before the trans tune.
Le Mans Master
Joined: May 2006
Posts: 7,867
Likes: 252
From: Hillsboro OR
Le Mans Master
Joined: May 2006
Posts: 7,867
Likes: 252
From: Hillsboro OR
Melting Slicks
Joined: Apr 2007
Posts: 2,916
Likes: 1
From: West Palm Beach Florida
I did Transgo shift kit. tuner did quicker shift time & raised the pressure 3/4, it's a slide to the right on the predator.
Works fantastic, now I just need to install the nitrous someday.
.
Works fantastic, now I just need to install the nitrous someday.
.
Team Owner
Joined: Sep 2007
Posts: 21,915
Likes: 61
From: Miami Beach FL
I suggest a full dyno tune by a pro. I have a '98 A4 car with 80k mi. I went from 283 rwhp to 312 rwhp & 321 tq. Shifts are very positive and there in NO hesitation when the accelerator is depressed. You won't be dissapointed.
Le Mans Master
Joined: May 2006
Posts: 7,867
Likes: 252
From: Hillsboro OR
I had my engine dyno tuned by a professional. The trans tune was added to it by a friend that spent quite a while tuning his own A4.
Drifting
Joined: Dec 2004
Posts: 1,706
Likes: 5
From: Toronto Ontario
I was going to post a new thread but figure I'll try here for an answer first.
If I do a a gear and converter swap, can I reprogram everything I need to program myself with a Predator or another hand help programmer? I don't know who I can trust with my car anymore.
If I do a a gear and converter swap, can I reprogram everything I need to program myself with a Predator or another hand help programmer? I don't know who I can trust with my car anymore.
Le Mans Master
Joined: May 2006
Posts: 7,867
Likes: 252
From: Hillsboro OR
