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| gotta luv a v8 |
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Hi, question , do the rpm's or kph govern the gear changes in the au autos. I have fitted a set of afr heads car runs great but where as beforehand the gears changed at 5200 rpm's now changes around 4700.
_________________ Don't force it, use a Bigger hammer |
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| xafalcon |
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Engine RPM, TPS, Shaft speed, engine load, a/c status, engine temp, trans temp.
_________________ XA Faimont 351C, AU2 XR8 Manual 5.0, DA LTD 5.0, Mk1 Capri 5.0, 1995 Mustang 5.0, EF2 XR8 Manual, EF2 Fairmont Ghia 5.0, AU3 XR8 Auto, AU2 XR8 Auto, AU2 XR8 Manual Ute, TE Cortina 5.0 Manual, DU LTD 5.0 soon to be manual |
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| gotta luv a v8 |
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Any ideas why the change in max rpm gear shift taking into consideration of various operating conditions all similar to pre fitting of the afr heads.
_________________ Don't force it, use a Bigger hammer |
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| XR9UTE |
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The performance mode shift schedule alone suggests TP vs Driveshaft speed is a determining factor of what speed it will shift at.
With the increased performance you'll be accelerating to the same shaft speed earlier and most likely with less TP % to do it so the shift rpm wil be less. Did that make sense? |
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| gotta luv a v8 |
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Yes I know what you are getting at, also had a tps fault code come up , will replace it and see if it is the problem, thanks
_________________ Don't force it, use a Bigger hammer |
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| XR9UTE |
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Ok the TPS could have a large effect in that case. Of course there other factors involved. In the end it's basically a Load vs speed calculation.
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| gotta luv a v8 |
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Replaced TPS still same result so that rules a faulty TPS out. Can the shift points be changed in a custom tune?
_________________ Don't force it, use a Bigger hammer |
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| XR9UTE |
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Yep.
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