7AT 3.692 Gear Review

xavier · 12-02-2018, 02:03 PM

Hi,

Lot of people, with 7AT 370z, change the final drive (9,97% --> 47/14 to 48/13) … I am interesting but …
The 7 automatic 370z gearbox have "downshift rev matching" - DRM , it permit synchro between engine and gear box during downshift.

Does pumpkin is from a 370z, 350z, manual transmission... ?
on the pumpkin, there are 2 sensors for ABS and speed.
on 350z there are 46 teeth for ABS.
on 370z there are 48 teeth for ABS.
I don't know if thoots number needed, and is respect for 370z ABS.
the only problem can come from final drive (9,97% --> 47/14 to 48/13).

Does "downshift rev matching" function change or run or not?
any problem, impact or not ?
all is ok to 7500 rpm for change gear?
do you make ecu reflash for solve "downshift rev matching" problem ?
at how many prm, what RPM value it not run?
what happen?
any gear box problem ?
Else, all is ok..

Thanks
Best regards
Xavier

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12-02-2018, 02:03 PM	#29 (permalink)
xavier Base Member Join Date: Aug 2018 Location: france Posts: 10 Drives: 370Z 7AT Rep Power: 3362	Hi, Lot of people, with 7AT 370z, change the final drive (9,97% --> 47/14 to 48/13) … I am interesting but … The 7 automatic 370z gearbox have "downshift rev matching" - DRM , it permit synchro between engine and gear box during downshift. Does pumpkin is from a 370z, 350z, manual transmission... ? on the pumpkin, there are 2 sensors for ABS and speed. on 350z there are 46 teeth for ABS. on 370z there are 48 teeth for ABS. I don't know if thoots number needed, and is respect for 370z ABS. the only problem can come from final drive (9,97% --> 47/14 to 48/13). Does "downshift rev matching" function change or run or not? any problem, impact or not ? all is ok to 7500 rpm for change gear? do you make ecu reflash for solve "downshift rev matching" problem ? at how many prm, what RPM value it not run? what happen? any gear box problem ? Else, all is ok.. Thanks Best regards Xavier