aventur2

That our transmission will ever be tuned to have a true manual mode. I know the ecu tuners have all just said "we are working on it" if I recall correctly the automatic FRS/BRZ uses the same 6 speed auto that our car does and that car has a true manual mode with Rev-matching and good shift speeds. What do you guys think?

metaleckz

iTrader: (9)

The reason i wanna sell my 350. Our tranny sucks!

aventur2

Honestly, I rather have a decent shifting manual mode than more power in our cars. It would make the car 100x better to drive.

SC400slide

iTrader: (11)

One of the reasons why our cars are so quick is due to the way the trans is geared. Manual in the IS350 would have been cool, but I still really like the stock trans.

redspencer

iTrader: (1)

Yes, it is absolutely possible. We just need a tuner to dedicate enough time to properly rewrite the codes on the Transmission Control Unit.

A case in point, the new Lotus Evora 400 utilizes an optional six-speed automatic transmission (the same Toyota-derived unit from the Camry), and Lotus engineers were able to adjust the shift times down to 100ms while also allowing the transmission to operate in a true manual mode.

aventur2

Yeah that's what I figured, hopefully one of the tuners will put in the time. I wonder how much fiddling lotus had to do to get those shift times.

Rezno

iTrader: (1)

Possible, yeah. Although I don't know if there is a huge market for tuners to actually put time into doing this. Keep in mind if something like this ever comes out I'd buy it in a heartbeat, but who knows. Just have to hope those tuning guys make it happen.

aventur2

Yeah, I know a good amount of us are truly performance oriented and would buy it in a heartbeat, but it's all up to the tuners to decide if it is worth it.
I wonder how much more work it is compared to the engine tune that both companies were able to put out.

Grizsk

+1.. 10/10... would buy immediately.

Rezno

iTrader: (1)

Its definitely super difficult. It took them a long time to crack the ECU to tune the engine and those have come out recently, so I'd imagine this is probably a lot harder. Although I wonder if this is the same ECU as the other Toyota 6-speeds.

I wonder (probably extremely unlikely) if we could just swap the two units... unless Lotus did some internal changes?

aventur2

I wonder (probably extremely unlikely) if we could just swap the two units... unless Lotus did some internal changes?[/QUOTE]

Lotus uses a transaxle. If you read about lotus IPS you will see that all the internals are directly from the camry so it's just the programming that lotus does.

Rezno

iTrader: (1)

Lotus uses a transaxle. If you read about lotus IPS you will see that all the internals are directly from the camry so it's just the programming that lotus does.[/QUOTE]
Interesting. Wonder if someone would be willing to experiment with this. If the transmission units are identical I don't see why this wouldn't work...

Jeff Lange

iTrader: (1)

They are completely unrelated. It wouldn't be possible to use anything from the Lotus in an IS.

Jeff

aventur2

Yes, because lotus uses the unit from a FWD Camry in the back of their Evora. So no way it would work.

Jeff Lange

iTrader: (1)

The best bet I could think of would be to see about copying/using the transmission programming/code from the 3rd Gen IS350 AWD, as it uses the A760H (the same 6-speed transmission as the 2IS) and has a proper manual shifting mode.

Jeff