I suspect it's the ECU also, but I wonder why it showed the 2 MAF codes. I'd still try borrowing a MAF sensor (or getting a cheap one from the junk yard) before buying an ECU. If time isn't a big issue, the ECU can be sent to one of the repair shops for testing.

Frank

'89 [color:"white"]G-Raider[color:"white"] [color:"black"]Supercharged 3.0L, MegaSquirt 2, lockup A/T, 2.5" exhaust, 172k, Cibie H4s/Oscar SCs, Hella Micro DE fogs, Cobra CB, Superwinch hubs, LSD rear/Aussie Locker front, Bilsteins, Lifeline AGM, Rust-Oleum