How much for a ecu?
 

Okay so my mechanic suggest that hes gonna buy me a new ecu since he swaped out my old motor and put in a used motor but lower mileage and the car wont start. I told him what happened that night my car died and he said it might of been my ecu. How much does a ECU run for a 1990 miata? Thanks.

DIY FaQ. READ IT and look it up yourself!! And we don't know what your planning on doing with the car soo more info is needed to help. Are you turbo. EBAY

Take your signature's advice. Dont be that guy.

OP: A quick ebay search shows that it is going to cost 100 dollars or less for a stock 90-93 ecu. If your mechanic will allow you to supply it, I would go that route. He will most likely mark up whatever price he gets, so save yourself some cash :). The only thing you have to consider is the fact that some 93 ECUs utilized sequential injection (california cars). If I were you, I would post up a WTB ad in the classifieds as I'm sure there are a few of us around with our stock ECUs collecting dust who would let them go for cheap( I would sell you mine, but it lacks a connector and is pulled apart so I can reverse engineer some of the circuits :D )

Naw im stock. I want a stock 1990 ECU for cheap. Sorry about the shitty info but im just mad my cars not running yet.

Thanks alot Jeff. Your the best ;)

ok, so let me see if I understand what you are trying to say. Your motor died while you were driving so your mechanic simply put in a used motor. The car still won't start and now he says you need a new ecu as well?
FWIW, ecu's dying is something very rare. Try finding a someone with a miata and put your ecu in his car. I bet it'll fire right up.

yeh! i think the cock sucker is just trying to get more money out of ya!