tuning for gear
02-26-2009, 09:37 PM
#1
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tuning for gear i have a 98 Z28 a4 just put a 3.73 gear in it and i am using efi live to correct the speedometer but now WOT it wont shift just hits rev limiter what else do i need to adjust to get it shifting right. also normal driving it carries all the shifts up more. any help will be greatly appreciated thanks
02-27-2009, 06:44 PM
#3
Check your MPH upshift settings....they likely need to be lowered.
Generally you will not get the commanded RPM shift until you have met the minimum MPH for the upshift.
If you're MPH settings are based on the stock 2.73 or 3.23 gears, you'll need to lower them by the same % as you increased the gear ratio.
Generally you will not get the commanded RPM shift until you have met the minimum MPH for the upshift.
If you're MPH settings are based on the stock 2.73 or 3.23 gears, you'll need to lower them by the same % as you increased the gear ratio.
02-27-2009, 06:46 PM
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Check your MPH upshift settings....they likely need to be lowered.
Generally you will not get the commanded RPM shift until you have met the minimum MPH for the upshift.
If you're MPH settings are based on the stock 2.73 or 3.23 gears, you'll need to lower them by the same % as you increased the gear ratio.
Generally you will not get the commanded RPM shift until you have met the minimum MPH for the upshift.
If you're MPH settings are based on the stock 2.73 or 3.23 gears, you'll need to lower them by the same % as you increased the gear ratio.
02-27-2009, 08:58 PM
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yeah my commanded shift rpm is always 75-100rpms off from where its actualy shhifting when data logging.....you just have to play with it till you get what you are after.....
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02-27-2009, 10:08 PM
#8
It sounds like the shift tables didn't scale properly if they did at all...usually with gears I find a direct scale of the tables doesn't result int he car being as fun to drive as it could be.
Play around in the tables that decide what MPH shifts occur at...first scale them to get it working, then as you drive it when you think "it should shift now" adjust the tables more so that it does.
Play around in the tables that decide what MPH shifts occur at...first scale them to get it working, then as you drive it when you think "it should shift now" adjust the tables more so that it does.