what companies make good aftermarket ECUs. got any links to sites?

 

apexi, aem, motec, haltech, m2performance, pettit, and a couple others.

apexi = most common
haltech, motech = most powerful (hardest install)
m2 & pettit = same ECU, new fuel maps, higher fuel cut, few other goodies.

do google searches on those for tons of info.

 

also try the rx-7 store link at the top of the page. That is a good place to start at for price and what is out there.

 

Haltech = best compromise between performance and price.