On the website AEM has the MK3 supra package for 2375. A non assembled Megasquirt II + ignition can be had for around 300-400 dollars after all sensors. The Megasquirt is not the MICROTECH you found for 850, however some jerks out there sell assembled Megasquirt II's for 600 sometimes but I wont be buying one of those, I can solder just fine.....
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I dont feel like a sig today.