cavette

iTrader: (1)

How do you make a 1JZ auto ECU work with a SC300 manual?

In other words, if I buy a 1JZ with an auto tranny from JHOT and drop just the motor into my SC300, which already has a W58, how would I make the 1JZ ECU that comes with the motor work in my car?

99SC42

iTrader: (44)

PNP bolt your W58 to the 1JZ , drop it in and ride my friend.

RyanV

iTrader: (9)

Exactly what he said.

There's a blurb on mkiv.com about the GTE auto ecu pulling timing when you shift a manual trans, but noone seems to think it's much of an issue either.

cavette

iTrader: (1)

Not referring how to physically bolt the W58 to the 1JZ, but rather how the ECU from the 1JZ that had the automatic tranny would now deal with the W58 after the swap. Wouldn't the 1JZ ECU think that it still has a 4-speed automatic tranny and #%*& up when the shifts come from the driver?

99SC42

iTrader: (44)

No i understood what you were saying, i just gave you a short answer lol, don't worry alot of people running A/T ECU on their manual cars with no issues.

OneJay

iTrader: (14)

You just need to do the NSS bypass outlined here https://www.clublexus.com/forums/perf...with-pics.html. I'll give you a hand with it when the time comes. Just let me know.

StiCk3

iTrader: (5)

another issue that im concerned about is the use of cruise control. Is it possible to retain stock cruise when going with a 1JZ w/ an auto ecu?

OneJay

iTrader: (14)

I'm pretty sure all you need is a longer cable to reach the new TB location. I'm not positive though since I just took mine out after the swap lol.

GSXRMack

iTrader: (3)

My 1JZ from jhot came with the cruise control box and cable so it should be plug and play on that one too.

StiCk3

iTrader: (5)

mine came with a cruise control box, however the harness was cut for it...

with the auto though it requires some inputs from the trans. speed sensor and the 3-4 shift solenoid which has me concerned. This is coming from a 2JZ standpoint, so it may be different with a 1JZ.