Hello,

I just got my hands on a 93 rx7 and want to know what i should do about engine management. I purchansed the car with a downpipe, air intake, exhaust, and bov. I took it to a rx7 specialist and they said it would be a good idea to think about some engine management. I ageed as I noticed at wot and very high rpms I would seem to encounter a fuel cut. They recomended the AEM ems. Was wondering if it was nessary to go with standalone engine management for a car with so few modifications. Would a piggyback like the s-afc do the trick? I am not really interested in making big power i just want the car to make the power it has safely and get around that nasty fuel cut off. Please forgive my ignorance. I seached and found an aboundance of information on both types of engine management but not a "clearish" answer to my question.

Thanks

 

Screw the aem... hardly anyone uses it, so you're putting yourself out on your own from square one.... It's probably a perfectly capable unit, but I prefer to use things that everyone else is using so that I can get free help

Buy an Apex'i Power FC if you want a standalone. Works great, and many people on this board use it. It will never need to be replaced, even if you decide to go single turbo later on.

Read my doc here if you wanna see what it can do!

https://www.rx7club.com/single-turbo-rx-7s-23/single-turbo-pfc-tuning-document-here-374526/

If you will never do any more mods to your car, you might be able to squeeze by with either a reprogrammed stock ECU (like the M2 or Pettit ones), or a piggyback type unit like the Peter Farrell "purple" box, or something like that.

In my opinion, you are better off just to spend a bit more and get the standalone though because it gives you a LOT more options later on down the road.

 

I think that you must analyze what kind of HP your looking for and whichever money you think spend.piggyback works but until limits of injectors and standalone does not matter that amount of injectores you put.
all the computers work very well from haltech to splitsecond.
recently s-afc to mazda turbo2 and made 330 to 12 mounts apex psi.
enfocate in which horsepower you looking for.