dahoseman

I have been wanting to supercharge my 2004 GX470 after I first took it up to high altitude with a full load and found that it had a lot of difficulty maintaining speed. It feels like a beast at sea level, but power drops off more than any vehicle I have ever owned above 10,000ft.

In any case, I came across a TRD supercharger taken off of a 2003 Sequoia 2UZFE with all the parts. I have not found reliable answers as to whether the piggypack ECU will function correctly from the Sequoia to the GX. Mechanically, the 2UZ's are essentially the same, so that shouldn't be an issue, minus some possible airbox modifications. I am hesistant to install it without assurance that the ECU's are the same or similar enough that it isn't going to detonate my engine.

Does anyone know if the ECU piggyback plugin is compatible between a 2003 Sequoia and 2004 GX470?
If they are not, are there alternatives or solutions?

I have heard that UniChip might be a solution, if there is a problem. If the provided piggyback is compatible, then I would rather just stick with that.

dahoseman

dahoseman

It seems like no one has knowledge about the compatibility?

DaveGS4

iTrader: (2)

Did you try searching this forum for TRD supercharger?

https://www.clublexus.com/forums/gx-...nd-stable.html
https://www.clublexus.com/forums/gx-...er-thread.html
https://www.clublexus.com/forums/gx-...ercharger.html

Edit - sorry, see you are asking a much more specific question about ECU, not 'will it fit'! Was thrown off by the other replies on that topic

Might try looking at the parts numbers sold for 2003 / 2004 TRD Supercharger to see if it changed at all. I'd guess year-to-year is as big a risk as vehicle to vehicle

dahoseman

Nope, not worried about anything else. There are plenty of Prados with TRD chargers around the planet as evidence. I'm only concerned with piggyback compatibility for a USA spec Sequoia vs GX470 sold in USA. It seems like they should be identical, given identical published ECU specs, but I would rather be certain. I know that the Sequoias and Tundras of the same era have made-in-USA internals with cast pistons and rods, rather than the forged internals inherent in the Japanese made engines (models previously introduced in Japan) that were made for a world markets. I'm only concerned that there could be different tuning, programmed transmission/engine electronic variations, and other dissimilarities resulting in ECU changes that would effect how the piggyback interacts. I would like to avoid detonating any pistons if I don't have to.

BlackCat81

dahoseman

BlackCat, that's a good idea. I think they would be the most reliable resource at this point. The Toyota/Lexus dealers and Toyota can't/won't answer any questions about that. I sent a message to URD. Just waiting to see if they can give me an answer.

IanB2

Did Prados come with V8's? I thought only the GX470's and 4th gen 4Runners did.

JLee50

As far as I know, Prados are exclusively I4/V6.

Organized Garage Status

Prado's came out with the same 4.7 V8. I used to live in Philippines, and almost bought one back then.

IanB2

Wikipedia page suggests only the GX470 got a V8 in a 120 Prado platform. If anyone can find an example and link to it I'd love to check it out.

https://en.wikipedia.org/wiki/Toyota...2%E2%80%932009)

The reason I ask is if all the SC'd Prado's are V6, then you can't reason that a Sequoia SC in a GX470 will allow the hood to close.

BlackCat81

JLee50

Hood closure wouldn't be my concern. I'd be more worried about the ECU.

dahoseman

Yeah, the hood closure isn't a concern. Even if it were, it's small potatoes compared to electronics, in my opinion.

I contacted URD and they responded with
"Those TRD control units were very specific for vehicle and year. You may not get it to work. We use the MAP-ECU to replace those control units."

I'm sure that somewhere out there in the world is some person that can say,
"YES, the piggy-back TRD unit is compatible between the 2UZFE ECU's on a 2003 Sequoia and a 2004 GX470"
or
"NO, the 2003 Sequoia's 2UZFE ECU has X-Y-Z settings different than the 2UZFE ECU in a 2004 GX470 and is not compatible for these reasons"

...... but I think the URD response is as good as I am going to get. Perhaps I'll just bite the bullet and get a MAP-ECU

dahoseman

I never actually got around to installing my supercharger. A lot of interference this past year with projects. I would like to get everything ready to go for installation when the snow melts in a few months.

Does anyone know if the supercharged engines required a different airbox and MAF, or does it reuse the same components?