Does anybody make a good chip for s5 na rx7s. If so how much do they run and where do i get one.

 

There's not really a plug and play EPROM chip available. If you want an aftermarket ECU you'll have to go with a standalone aftermarket ECU. Bang for the buck wise it's not going to be worth it unless you're doing something fairly radical.

 

Check http://www.corksport.com

They have ECU's for sale in their engine management section.

Good luck!

 

why not just get a piggy-back like the e-manage or e-manage ultimate? This way, not only will you be able to optimize your current setup, but have room to grow for the future.

 

ebay has some redom ecus and re amemiya ones ,but I havent heard any thing good or bad about them