ECU upgrades

[bazan]

I was wondering if there is just a chip that you can buy and install or if you must do the entire ECU upgrade and reprogram. I can't have my car down for a long time waiting for someone to re program my ECU. I've got a '91 h/b SE, could I buy someone else's ECU and send that one in for reprograming then swap with mine? Thanks y'ns.

[Structure240sx]

u can buy someone elses as long as its for the same engine and transmission (5spd or auto)

[Calvin]

California ECUs were different from Federal ECUs. Convertibles used different ECUs. The s13 DOHC ('91-'94) was wired quite differently from the SOHC ('89-'90), including the ECU.

If you buy another ECU...I personally don't know what differences matter - or don't matter - to JWT, but it seems like an easy way to avoid hassle is to get one that matches what you already have.

Here's the same link I posted in another thread, in case you wanted to check the numbers on a salvage yard ECU:http://www.online240.net/specs/s13_ECU_ID.html

http://www.car-part.com is an easy way to locate used parts.