JET is a fairly well known ECU "reprogrammer". Many have questioned what they acutally do...this page has some photos of the take apart of an '87 Toyota Supra Turbo ECU that had been "tuned" by JET.

(385K) 1600 x 1200	Note the seals keeping the ECU closed.	(409K) 1600 x 1200
(417K) 1600 x 1200	Some sort of S/N or something to make you THINK its official...	(418K) 1600 x 1200	the lower board, note nothing special...no marks of soldering or anything...
(421K) 1600 x 1200	the board that actuatlly has the processor on it. again, NO marks of soldering or ANYTHING.	(423K) 1600 x 1200	closer shot of the back of the processor board.
(395K) 1600 x 1200	the processor board. again, note NOTHING out of the ordinary- save the pretty JET sticker.	(424K) 1600 x 1200	a closer shot of the processor. nothing has been changed, just the JET sticker.
(415K) 1600 x 1200		(427K) 1600 x 1200	the backside of the processor. no solder marks, no nothing...

If you know anything about the MKIII's ECU, you know that the ROM Is on the processor and its non-flashable. This means that you can't just reprogram it, you must remove the current processor, add a daughterboard w/separate ROM and processor. Clearly, all JET does is place a sticker in your ECU and seal the ECU closed so you will think they actually did something. Does this sticker add the claimed HP/TQ? That's for you to decide....

Last update 4/16/03

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