OEM 3UZ ECU TUNE/FLASH

[Roki187]

A newbie here. Lots of great reading material.
Next season I’m hoping to do headers, careless y pipe, intake and ported Intake manifold with a tune from George
70k miles btw on a 04 UL
I also have a 2jz powered car

 

[George_R]

For anyone trying to relearn the immobilizer, here is the method I used for my sc430.



It’s best if you buy the immobilizer delete, it will just be plug and play. Less headaches. But if you don’t purchase the immobilizer delete, you’ll need to:
1) disconnect the negative cable off battery
2) remove the oem ecu, plug in the new modified ecu.
3) connect the negative back on the battery
4) insert key in ignition, and key on (engine off)
5) on the obd2 port under the driver side dash, jump terminal pin 13 (TC) and pin 4 (CG) for 30 minutes (put a timer on).
6) the cluster gauge will start flashing during the 30 minutes.
7) after the 30 min is up, key off and remove key from ingntion. Then remove the jumper wire from pin 13 and pin 4.
8) insert key back in ignition and start engine right away.

it's been posted whole lot of times and unfortunatelly it never helps. People will still tend to read it wrong or never find this useful information. It's also worth mentioning that this method will not work for old Lexus GS430 (160 chassis code)

 

[gloverman]

 

[romeo]

ecu came in today installed it and followed the procedure car started but then theres a check engine light on i hook up the scanner and its p1765 Linear Shift Solenoid Circuit Fault going to take it off now and put the stock one on untill i can get it sorted out first before i use it

 

[romeo]

update: i reinstalled my old ecu and cel light is gone so ill have to get with Quantum-Auto to see if we can get it going right

 

[George_R]

What ecu part code was that? Did you buy and send spare ecu to Quantum Auto, or did you buy one there?

 

[romeo]

What ecu part code was that? Did you buy and send spare ecu to Quantum Auto, or did you buy one there?

i bought one from there

 

[romeo]

on the ecu numbers are 89661-50551......275000-2550 12v....2-50030
and there is some numbers hand written as well 3501100-8966550011

 

[George_R]

sounds like replacement is due, tell us what happens next

 

[romeo]

sounds like replacement is due, tell us what happens next

waiting on there email so i can send back the ecu to get fixed or replaced lol there only an hr away from my house i could take a drive there to drop it off maybe it be faster but im just waiting on response to see what the plan is

 

[dk_sc430]

@George_R when are you guys be able to reflash ecus for the 1UZ. I have a 1999 LS400.

 

[George_R]

not before the Kingdom come

 

[romeo]

got the replacement ecu no more cel light low end tq is better

 

[Makeitreal]

Things are the other way around this time.
Besides USA, the reflash service is also available in UK for EU customers

I see you do this for the 3uz what about the 1uz?

 

[George_R]

I wish I had 1 usd each time I'm being asked

 

[Lextreme]

 

[Ianator]

I wish I had 1 usd each time I'm being asked

hey george I have a 2002 sc430 with remapped ecu from quantum auto and they’ve been very slow to reply, and im starting to lose hope because my car is having dtc and cel lights pop up p1765 codes which causes 2nd gear not to engage, and quantum auto is asking 400 dollars to get repaired, i don’t think i would like to spend that much when they messed it up. Is there any way you could get this fixed if i send it to you? I would appreciate the help thanks.

 

[George_R]

this sounds unusual but thank you for the info. I will try to talk to them first. What was email that you used for communications?

 

[Ianator]

this sounds unusual but thank you for the info. I will try to talk to them first. What was email that you used for communications?

it’s sales toyotav8.com

 

[Ianator]

this sounds unusual but thank you for the info. I will try to talk to them first. What was email that you used for communications?

that’s the only way i can contact them through their website when you go to contact us