My twin supercharged tbi 350 miata build

[Shawn1989]

I have a bosch one from a saab/audi for each blower. When it hits boost; it closes

[Shawn1989]

Which one would i purchase? The $430 or $380?

[dave w]

Which one would i purchase? The $430 or $380?

I was thinking other members might comment on other computer options?

I would purchase the $450 option, which includes the USB to Serial adapter, and tested system.

dave w

[1project2many]

Maybe other members can offer a budget suggestion for a TBI boost computer?

The 1227749 with $58 can be used with TBI and boost. The code and hardware are present to control TBI injectors although this path is not well explored. There may be some writeups on the 'net by people working to use this ecm with $58 (or $59) in TBI mode.

Shawn, in my 30+ years experience, the one statement about cars that seems to be true is this: "You can save time or you can save money, but it's rare to save both." If your budget does not allow for a designed and documented solution then you will be investing time and labor to find an alternative. Either you should start searching for EBL or similar for sale used and cheap, or you should plan to learn enough about the GMECM family to make an alternative ecm work.