2jzgte77

HI everyone,
Happy to join this forums , I also belong to the SF's

I need some help with the NA -T swap, does anyone have a solid directions on "HOW TO "
swap the na fuel pump ECU to the TT fuel pump ECU?

I have been searching for something solid, I'm sure someone has done this.
I do have the TT FP ECU and the OEM connector, and I purchased the EFI relay from Toyota.

Can someone shine a light on this?

Thanks so much, and check out all my posts on SF under 2jzgte77

Studiogeek

iTrader: (6)

I have never heard of this being done. What is the advantage of the TT unit? Would one from a Soarer yield you the same benefits?

2jzgte77

The Supra MKIV TT the variable fuel pump speed 9-12 v fuel pump ECU.
Since I'm NA-T im converting everything to the factory specs and I do not like the idea of the 12V mod. Ive seen these fail personally .

So if anyone can help me I would appreciate it

gerrb

iTrader: (34)

what do you mean by "Ive seen these fail personally" ?

are you referring to the pump failing when the 12v mod is done ?

with or without the mod pump fails and I will assure you it is not because of the 12v mod. Most cars come with straight 12v to the pump .

Your best help will be the wiring diagram for that pump ECU. Once am back from vacation in a couple of days , I can post a diagram if I don't forget .

2jzgte77

Hi Gerrb, yes my buddy did the 12V mod , the correct way as posted on MKIV.com, and on a few runs, the new FP burned and a relay.
I would like to swap it from NA to TT , basically making the Supra into a factory designed car. That's my goal.
Ive already purchased the correct socket , the TT fuel pump ecu and a FI relay from Toyota. Now I need to know what wire goes where and what else is needed, beside the TT fuel pump itself.