GS - 4th Gen (2013-2020) Discussion about the 2013 and up GS models

Is it possible to dyno an AWD GS on a 2WD dyno?

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Old 04-17-18, 08:17 PM
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gte
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Default Is it possible to dyno an AWD GS on a 2WD dyno?

My previous awd vehicle had a fuse you could pull which would allow you to dyno it in 2wd mode. Looking at the GS I see there is something called a transmission wire for transfer that plugs into the transfer case, but I can't find out what it is for?

Has anyone been able to dyno an awd GS on a 2wd dyno?

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https://parts.lexusofqueens.com/p/Le...UaAlrHEALw_wcB
Old 04-17-18, 09:39 PM
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er34
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Maximum torque distribution for AWD is 30:70. I don't see how you can 2 wheel dyno it and get meaningful numbers.
Old 04-18-18, 06:41 AM
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gte
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If I can't disconnect the torque distribution to the front wheels, I would not be able to get meaningful numbers, but if I could the split would be 0/100 and the values would be close enough.

In my R35 I can pull the front driveshaft to do this, in the vehicle the GS was a replacement for (Focus RS), I could pull a fuse to make the torque split 0/100.

Originally Posted by er34
Maximum torque distribution for AWD is 30:70. I don't see how you can 2 wheel dyno it and get meaningful numbers.
Old 04-18-18, 07:17 AM
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GregCanada
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You would have to look in the owners manual to see if there is a "tow mode" or something similar. My old Celica GT4 had a "dyno mode" where you flipped a switch on the t-case to disengage the rear axle. It was suggested for dyno maintenance only.
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