Automatc
Thread Starter
Burning Brakes
Joined: Jun 2008
Posts: 948
Likes: 0
Automatc
how do u guys feel bout the throttle response on an automatic?
sometimes feels like i have to give it alot of gas..for the car to pick up. the throttle response doesnt feel very quick. almost like on a delay.
is there any good products to improve the throttle response?
sometimes feels like i have to give it alot of gas..for the car to pick up. the throttle response doesnt feel very quick. almost like on a delay.
is there any good products to improve the throttle response?
Racer
Joined: Jan 2006
Posts: 394
Likes: 0
From: Lawrenceburg IN
That depends where you are. You might want to check the regional section and ask if anyone knows a reliable tuner with Vette experience in your area. There are also some guys that will do mail order tunes. I know Chuck at Corvettes of Winchester does them. I'd expect to pay 3-500 for a good tune, but you will gain a good amount of horsepower and improved performance as well as that throttle response you are looking for. Good luck! The mod bug will have you soon.
Tech Contributor
Joined: Dec 2003
Posts: 19,384
Likes: 87
From: Horncastle Lincolnshire, England
2023 C5 of the Year Finalist - Unmodified
Kickdown seems to take an age to kick in and then its not a smooth pick up.
I read a thread from one tuner who was trying to remap the shift points for this very reason. Not sure how far it went and I cant find the link. Apparently the compromise is performance over reliability.
Like you I find it frustrating so I tend to drop to 3 or even 2 if I want a quick pick up. I also find it annoying when it tries to upshift on a bend. Some of the back roads here are quite twisty so again I drop a gear.
I read a thread from one tuner who was trying to remap the shift points for this very reason. Not sure how far it went and I cant find the link. Apparently the compromise is performance over reliability.
Like you I find it frustrating so I tend to drop to 3 or even 2 if I want a quick pick up. I also find it annoying when it tries to upshift on a bend. Some of the back roads here are quite twisty so again I drop a gear.
Last edited by DeeGee; Jan 18, 2009 at 01:48 AM.
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Tech Contributor
Joined: Dec 2003
Posts: 19,384
Likes: 87
From: Horncastle Lincolnshire, England
2023 C5 of the Year Finalist - Unmodified
The experts say providing you watch the temperatures its OK. Apparently, high transmission fluid temps can reduce tranny life. I never leave it there. Just takes the bends and back to D. I never see a significant rise in temperatures. The change in response time is significant.
Race Director
Joined: Jul 2004
Posts: 14,609
Likes: 219
From: Ohio
Chuck at Corvettes of Westchester does a great mail order tune.
He did my 2004 A4, and the throttle response is much better than stock.
You'll find links to him in the following thread...
http://forums.corvetteforum.com/c5-g...rder-tune.html
He did my 2004 A4, and the throttle response is much better than stock.
You'll find links to him in the following thread...
http://forums.corvetteforum.com/c5-g...rder-tune.html
Race Director
Joined: Jul 2007
Posts: 18,681
Likes: 47
From: Reno is so close to Hell you can see Sparks , State Of Confusion
St. Jude Donor '12-'13-'14
I also had Chuck of CoW do a mail tune for me and I now have a new car, It is really responsive now, well worth the money.
Racer
Joined: Sep 2007
Posts: 382
Likes: 0
From: CT
i drove an A4 coupe and was shocked at the stock transmission behavior. i almost thought something was wrong. it felt like anything less than WOT and the car immediatly sought overdrive. then it required nearly 3/4+ throttle to kickdown when accelerating.
Le Mans Master
Joined: Aug 2004
Posts: 8,506
Likes: 5
From: West Michigan crew Mich
CI 7-8-9 Veteran
St. Jude Donor '07-'08 & '12
I leave mine in 3 all the time around town its good for well over 100mph. I use od on the hi-way only. These cars were made to be driven 
Drifting
Joined: Nov 2007
Posts: 1,616
Likes: 11
From: Newport, RI
how do u guys feel bout the throttle response on an automatic?
sometimes feels like i have to give it alot of gas..for the car to pick up. the throttle response doesnt feel very quick. almost like on a delay.
is there any good products to improve the throttle response?
sometimes feels like i have to give it alot of gas..for the car to pick up. the throttle response doesnt feel very quick. almost like on a delay.
is there any good products to improve the throttle response?
Wow, lots of guys with "Chuck CoW" tunes here, including me.
I just got my ECM back from Chuck, so I haven't had a chance to try it out yet, as the roads here are all snow and ice.I had talked with Chuck for quite a while prior to sending him my ECM and he clearly explained the soggy throttle response. As you may (or may not) know the Corvette throttle body is NOT connected via a mechanical cable linkage directly from the gas pedal. There is a sensor for the gas pedal, which transmits electrical signal to a small motor on the throttle body, and it is that small motor which opens and closes the throttle. So, you actually have "throttle by wire".
The factory settings call for the throttle response to be very slow, especially at part-throttle operations. Chuck explained that at 20% gas pedal depress, the throttle might be only 3% open (not sure if these are exact %'s, but they're close). So on a stock tune, we get what feels like a sluggish car. One of the things Chuck does is increase the settings on the throttle body motor, so that at 20% gas pedal, the throttle body opens to 9%. So this produces a much snappier-feeling car.
Hope this helps.
-
Tech Contributor
Joined: Dec 2003
Posts: 19,384
Likes: 87
From: Horncastle Lincolnshire, England
2023 C5 of the Year Finalist - Unmodified
Wow, lots of guys with "Chuck CoW" tunes here, including me. I just got my ECM back from Chuck, so I haven't had a chance to try it out yet, as the roads here are all snow and ice.
I had talked with Chuck for quite a while prior to sending him my ECM and he clearly explained the soggy throttle response. As you may (or may not) know the Corvette throttle body is NOT connected via a mechanical cable linkage directly from the gas pedal. There is a sensor for the gas pedal, which transmits electrical signal to a small motor on the throttle body, and it is that small motor which opens and closes the throttle. So, you actually have "throttle by wire".
The factory settings call for the throttle response to be very slow, especially at part-throttle operations. Chuck explained that at 20% gas pedal depress, the throttle might be only 3% open (not sure one these exact %'s, but they're close). So on a stock tune, we get what feels like a sluggish car. One of the things Chuck does is increase the settings on the throttle body motor, so that at 20% gas pedal, the throttle body opens to 9%. So this produces a much snappier-feeling car.
Hope this helps.
-
I just got my ECM back from Chuck, so I haven't had a chance to try it out yet, as the roads here are all snow and ice.I had talked with Chuck for quite a while prior to sending him my ECM and he clearly explained the soggy throttle response. As you may (or may not) know the Corvette throttle body is NOT connected via a mechanical cable linkage directly from the gas pedal. There is a sensor for the gas pedal, which transmits electrical signal to a small motor on the throttle body, and it is that small motor which opens and closes the throttle. So, you actually have "throttle by wire".
The factory settings call for the throttle response to be very slow, especially at part-throttle operations. Chuck explained that at 20% gas pedal depress, the throttle might be only 3% open (not sure one these exact %'s, but they're close). So on a stock tune, we get what feels like a sluggish car. One of the things Chuck does is increase the settings on the throttle body motor, so that at 20% gas pedal, the throttle body opens to 9%. So this produces a much snappier-feeling car.
Hope this helps.
-
Racer
Joined: Sep 2007
Posts: 382
Likes: 0
From: CT
Wow, lots of guys with "Chuck CoW" tunes here, including me. I just got my ECM back from Chuck, so I haven't had a chance to try it out yet, as the roads here are all snow and ice.
I had talked with Chuck for quite a while prior to sending him my ECM and he clearly explained the soggy throttle response. As you may (or may not) know the Corvette throttle body is NOT connected via a mechanical cable linkage directly from the gas pedal. There is a sensor for the gas pedal, which transmits electrical signal to a small motor on the throttle body, and it is that small motor which opens and closes the throttle. So, you actually have "throttle by wire".
The factory settings call for the throttle response to be very slow, especially at part-throttle operations. Chuck explained that at 20% gas pedal depress, the throttle might be only 3% open (not sure if these are exact %'s, but they're close). So on a stock tune, we get what feels like a sluggish car. One of the things Chuck does is increase the settings on the throttle body motor, so that at 20% gas pedal, the throttle body opens to 9%. So this produces a much snappier-feeling car.
Hope this helps.
-
I just got my ECM back from Chuck, so I haven't had a chance to try it out yet, as the roads here are all snow and ice.I had talked with Chuck for quite a while prior to sending him my ECM and he clearly explained the soggy throttle response. As you may (or may not) know the Corvette throttle body is NOT connected via a mechanical cable linkage directly from the gas pedal. There is a sensor for the gas pedal, which transmits electrical signal to a small motor on the throttle body, and it is that small motor which opens and closes the throttle. So, you actually have "throttle by wire".
The factory settings call for the throttle response to be very slow, especially at part-throttle operations. Chuck explained that at 20% gas pedal depress, the throttle might be only 3% open (not sure if these are exact %'s, but they're close). So on a stock tune, we get what feels like a sluggish car. One of the things Chuck does is increase the settings on the throttle body motor, so that at 20% gas pedal, the throttle body opens to 9%. So this produces a much snappier-feeling car.
Hope this helps.
-
this makes sense. if the throttle body opening pre-tune is biased toward the end of the pedal travel the car would respond in a manner as the one i drove did...