what em
 

Hello everyone, just recently me and my brothers got a project car, a 1999 miata. I am completely new to mazda but not to car modding and tuning. I will be making a custom turbo kit or purchasing one that is already complete and will build the engine as needed to support boost. My other car is a wrx and I have built and tuned it myself, i don't think you can use the stock ecu for tuning on the miata like I can on my wrx so my question what engine management system is on the cheaper side that I can use for tuning? I wanna be able to control open loop fueling based on load and rpm, closed loop fueling but can go without it(mainly need it for running afr that is different than 14.7:1), Timing based on load and rpm, maf tuning or speed density, 3 port boost control solenoid, idle rpm, lc, ffs, and antilag but can go without them. I would prefer a plug and play unit but if its cheaper I can assemble solder etc... Thanks in advance guys.

megasquirt is what a good portion of the modded miata world are running, Including myself. you can build your own to your liking and then tune it yourself on your computer in your free time. heres a thread on how to build and install it.
How to make and install your own Diy MegaSquirt - Miata Turbo Forum - The Miataturbo of miata turbo sites

yeah after more reading i am leaning towards ms, how much did it cost you to build it? Will that same kit work for an obd2?

bought it used, all aftermarket EM's wont return 0bd2 codes unless its run in parallel with the stock ecu. google diyautotune, they sell prebuilt kits and diy kits.

if you have an obd2 vehicle how do you pass emissions if you dont have an obd2 output?

this thread discusses the different options for dealing with emissions.
PS: ohio has no emissions check so i have no idea what needs done
getting past emissions? loop hole? - Miata Turbo Forum - The Miataturbo of miata turbo sites

thanks for your help man, I will keep reading before asking more.:)

Reverent has a thread on miataturbo.net about a group buy on his new MS3Basic units.