Delayed Down Shift/Throttle Response
Thread Starter
Intermediate
Joined: Jan 2010
Posts: 31
Likes: 0
From: Westminster Colorado
Delayed Down Shift/Throttle Response
I have a 98 A4 that now has a Vararam intake, low flow exhaust and a computer tune one by the local Corvette shop. Overall, I am please with the performance increase from all of these mods, but I still have a 1+ second delay from when I punch it, to when it actually really ramps up and goes. This delay does not seem to be consistent either, but is there for the most part.
I have seen mods for this issue designed for the C6, but I have not turned up much for my C5. I am asking too much to have instant or fairly close to instant response from when I floor it, to when my head snaps back?
Thanks in advance,
Ryan
I have seen mods for this issue designed for the C6, but I have not turned up much for my C5. I am asking too much to have instant or fairly close to instant response from when I floor it, to when my head snaps back?
Thanks in advance,
Ryan
Melting Slicks
Joined: Nov 2008
Posts: 2,938
Likes: 65
From: Rochester Hills MI
first off, get a professional tune. a mail order tune will never be the same as a professional street tune because all cars are slightly different. also from a stop or very low speeds, the vararam is going to give less throttle reponse than intake kits with less tubing, but more at speed. ported throttle body and ls6 intake manifold will also help.
Le Mans Master
Joined: May 2006
Posts: 7,803
Likes: 205
From: Hillsboro OR
Get a tune from a "seasoned" trans tuner. Mine is now set to shift gears in .2 seconds. More agressive UP and DOWN shift points. Downshifts now with far less pedal movement. Awesome stuff. 
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From: Providing the most proven supercharger kits for your C5/6/7 609-752-0321
first off, get a professional tune. a mail order tune will never be the same as a professional street tune because all cars are slightly different. also from a stop or very low speeds, the vararam is going to give less throttle reponse than intake kits with less tubing, but more at speed. ported throttle body and ls6 intake manifold will also help.
.
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Thread Starter
Intermediate
Joined: Jan 2010
Posts: 31
Likes: 0
From: Westminster Colorado
Doug, from what I have been reading, this seems to be fairly common on A4's, but if I don't turn anything else up, I may take you up on your offer.
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Le Mans Master
Joined: Aug 2005
Posts: 5,375
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From: CA.
St. Jude Donor '13-'14-'15
Transmission tuning is HUGE on a C5--My car gained about 3 tenths in the 1/4 with trans tuning alone without adding a single HP !!--
You need someone to read your existing tune-- typically to get faster response you should:
delete TQ mangement
Make your upshift at WOT MPH's match the Downshift MPH at WOT
Delete the PE delays
set the entire "ETC pedal TQ limit reduction table to 100%
turn the TC button OFF when making spirited runs-
most likely your tuner has already tuned all the other basics for you concerning the trans
try this 1st and report back--
You need someone to read your existing tune-- typically to get faster response you should:
delete TQ mangement
Make your upshift at WOT MPH's match the Downshift MPH at WOT
Delete the PE delays
set the entire "ETC pedal TQ limit reduction table to 100%
turn the TC button OFF when making spirited runs-
most likely your tuner has already tuned all the other basics for you concerning the trans
try this 1st and report back--
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Joined: Oct 2004
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From: Providing the most proven supercharger kits for your C5/6/7 609-752-0321
Bluefire, what sort of shop did you have do this work, a normal speed shop or a transmission shop? That seems to be exactly what I am looking for.
Doug, from what I have been reading, this seems to be fairly common on A4's, but if I don't turn anything else up, I may take you up on your offer.
Doug, from what I have been reading, this seems to be fairly common on A4's, but if I don't turn anything else up, I may take you up on your offer.
Le Mans Master
Joined: May 2006
Posts: 7,803
Likes: 205
From: Hillsboro OR
Bluefire, what sort of shop did you have do this work, a normal speed shop or a transmission shop? That seems to be exactly what I am looking for.
Doug, from what I have been reading, this seems to be fairly common on A4's, but if I don't turn anything else up, I may take you up on your offer.
Doug, from what I have been reading, this seems to be fairly common on A4's, but if I don't turn anything else up, I may take you up on your offer.
Thread Starter
Intermediate
Joined: Jan 2010
Posts: 31
Likes: 0
From: Westminster Colorado
Thanks for all the info folks. I have located another Corvette specialty shop here in the Denver area and they are going to do what you all have suggested. I will let you know how it turns out.
