Shift Timings ?
09-13-2005, 11:59 AM
#1
Staging Lane
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Shift Timings ? Hi Guys,
First post here.I'm new to this tuning business so please bear with me Ok.I currently know most basic stuff and am learning quickly. My current agenda is Shift Timing. I Did some research on shift speed tuning. If what I learnt is correct then then you can do so by going into Edit > Trans Call. > A4 Shift Firmness then clicking on Desired Shift Time ? How am I doing so far ?
Ok from what I've read , .150 seems optimal but 2-3 becomes somewhat sluggish ? .200 is the best comprimise . Opinions ? Suggestions ?
I am also a member on the CF. Members over there suggested .163 which is the lowest factory setting. I would like to hear more opinions. Experiences etc.
First post here.I'm new to this tuning business so please bear with me Ok.I currently know most basic stuff and am learning quickly. My current agenda is Shift Timing. I Did some research on shift speed tuning. If what I learnt is correct then then you can do so by going into Edit > Trans Call. > A4 Shift Firmness then clicking on Desired Shift Time ? How am I doing so far ?
Ok from what I've read , .150 seems optimal but 2-3 becomes somewhat sluggish ? .200 is the best comprimise . Opinions ? Suggestions ?
I am also a member on the CF. Members over there suggested .163 which is the lowest factory setting. I would like to hear more opinions. Experiences etc.
09-13-2005, 02:01 PM
#2
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Personally, I've done custom tables and straight percentage changes. It was hard to tell the difference to be honest. For the 1-2 or the 2-3, you would be just fine with a 15~20% decrease in desired shift times (i.e. multiply by .85~.80). As for the 3-4, a 10% decrease should be more than enough. Another other option would be to play with the shift pressure multipliers. In EFILive, I was able to adjust the shift pressures based on delivered torque. Here I went with a straight number across the board from say 100ft/lbs on up. In terms of percentages, it looks like about a 50% increase for light throttle and a 5% increase for the upper end. I don't particularly like to touch the Force Motor Current table as this can produce higher line pressures all the times instead of just during the shifts.
