Bought a 94 turbo miata with a turbo kit and apexi safc 2 that runs like crap, misfiring and hesitation at every rpm. The car has 460 rx7 injectors and starts and idles perfectly. Anyone have any ideas? I have tried tuning but doesnt help.

 

My idea:

1. Rip off that shitty excuse for a fuel controller. Sell it to somebody on a 240sx forum.

2. Put the money you acquired towards a megasquirt.


Seriously, you won't find much help for a SAFC on this board. They are a downright terrible way to tune a car.

Also, do you have a wideband? If you don't buy one right MEOW!

 

You ******* serious?

Do you realize how an SAFC works? Obviously not, because if you did you would know that it is a total piece of **** and has absolutely no business on any car, especially not one with an aftermarket turbocharger.

You have 2 big issues now
1) You need to get rid of the SAFC (sell it to some retard) and get some real engine management, such as megasquirt
2) You bought a car that has been running turbocharged on an SAFC for god knows how long. Its nothing short of a miracle that it hasnt blown up yet, but it would really be a miracle if it wasnt heavily damaged from having that electrical abortion controlling it. I suggest you do a compression leakdown test immediately, and be prepared to do an engine rebuild.

 

ya I pretty much figured it was garbage after a few days attempting to tune it, but the car was only 1000 bucks and loaded with some good stuff I figured I could always swap into my other miata. Thanks for the quick replies anyway