down shift
Thread Starter
Staging Lane
Joined: Feb 2011
Posts: 56
Likes: 0
From: dallas,ga
down shift how fast of a roll should i go from to ensure my car is in the lowest gear possible ............i was racing a honda from a 25-35 roll and it seemed like my car didnt down shift still won but i know at some speeds i can punch it and it will get sideways......
Joined: Nov 2001
Posts: 34,631
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From: Schiller Park, ILL Member: #317
With stock trans tuning the following will be true:
- With 2.73 gears (GU2), WOT downshift to 1st gear at up to ~37mph as seen on speedo
- With 3.23 gears (GU5), WOT downshift to 1st gear at up to ~29mph as seen on speedo
The speeds may vary a bit from car to car since the speedo will not always be 100% accurate, and I can't recall the exact figures that are tuned into the PCM at the moment, but that is a very close estimation. However, I see that you have custom tuning, so these settings could have been changed.
- With 2.73 gears (GU2), WOT downshift to 1st gear at up to ~37mph as seen on speedo
- With 3.23 gears (GU5), WOT downshift to 1st gear at up to ~29mph as seen on speedo
The speeds may vary a bit from car to car since the speedo will not always be 100% accurate, and I can't recall the exact figures that are tuned into the PCM at the moment, but that is a very close estimation. However, I see that you have custom tuning, so these settings could have been changed.
TECH Regular
Joined: Mar 2005
Posts: 457
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Down shift your self man! Dont rely on a computer, thats why I drive 6 speeds. I would just get a little practice in, try some stready rolls and down shift and punch the gas... what you you could do is cruise in 1st, watch your tach and speed to get an idea of how fast you should be going to do it. Same with second gear.
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Just need to find your sweet spots. My car with 2.73s loves anything between 35 and 40. But even then you have to wait for the car to downshift, against any serious car that downtime is a big factor. If you can, in a roll race, manually put the car first so you dont have to wait for that down shift. DO NOT manually down shift your stock A4 though, only do that if you at a stop or going like 10mph, and right when you punch it put it right back into D.
TECH Regular
Joined: Mar 2005
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Why not manually down shift a stock A4! I been down shifting those things for years, my old camaro 140k with the stock trans. Down shifted and beat the **** out of that thing every day, so does my brother with his 2000 T/A 165k on the stock trans!
Thread Starter
Staging Lane
Joined: Feb 2011
Posts: 56
Likes: 0
From: dallas,ga
im in the process of getting everything together for a lq9 swap then boosting (12#) it in Feb if i buy a stall ill need to match it to the build any suggestions...i tried downshifting my self and thats how i got a new tranny p.s i have a reared out of a 2001 ws6 m6
