I've searched and can't find a lot about any kind of performance ECU for my LS400.

I did find this today however from a link off of a Lexus web page.

http://www.truckperformance.com/products/category_Chips+~~+Programmers/productcategory_Factory+ECU+Upgrades/searchtype_d/sortorder_ADA/sf1_LEXUS/sf2_1997/sf3_LS400/

Manufacturer site:
http://www.jetchip.com/products.asp?pid=14478&make=64&model=1003

What do you guys think?

This has been discussed many times here, however I don't believe anyone has done it.

This has been discussed many times here, however I don't believe anyone has done it.

I searched the forum and could not really find much, so I figured I would ask.

It's something I would be interested in if it's worth my time.

It's something I would be interested in if it's worth my time.

It's not... let's just leave it at that. ;)

I looked at chips at one time, but never found something tested on the 1MZFE engine and available for actual sale. It was interesting to note on Jet´s site they listed the RX300. However, so much of a pain to deal with these things in terms of installation.