Have an 88 'Vette TPI system. Of course, the idiots cut the harness at the firewall, so I need a computer to retrofit on my 69 Camaro. Would like to eliminate the ninth injector and more than likely go to speed density instead of the MAF. If going to speed density is the right move, which GM ECM do I want to be looking for. IF MAF is better for a retrofit, which ECM is the one to get? Going to be putting a fully ported TPI unit on a 375 HP 350. Thanks in advance.

 

The '730 (GM # 1227730 ) MAP ECM
May also be numbered 16196344 16198262 or 88999196
The tune you put on the removable memcal (chip ) inside determines what it's final usage is so what it came out of originally does not matter

Used with many different GM cars /engines , examples

6000 87-89 Elec Cont Unit (ECU); 6-173 (2.8L)
6000 89-91 Elec Cont Unit (ECU); 6-191 (3.1L)
BERETTA 87 Elec Cont Unit (ECU)
BERETTA 88 Elec Cont Unit (ECU); 4-121 (2.0L), thru VIN 500000
BERETTA 88-89 Elec Cont Unit (ECU); 6-173 (2.8L)
BERETTA 90-91 Elec Cont Unit (ECU); 6-191 (3.1L)
BERETTA 92-93 Elec Cont Unit (ECU); (above right kick panel), 6-191 (3.1L)

CAMARO 90-92 Elec Cont Unit (ECU); 6-191 (3.1L)
CAMARO 90-92 Elec Cont Unit (ECU); 8-305 (5.0L), MFI
CAMARO 90-92 Elec Cont Unit (ECU); 8-350 (5.7L)

CAVALIER 87 Elec Cont Unit (ECU)
CAVALIER 88-89 Elec Cont Unit (ECU); 6-173 (2.8L)
CAVALIER 90-93 Elec Cont Unit (ECU); 6-191 (3.1L)
CELEBRITY 87-89 Elec Cont Unit (ECU); 6-173 (2.8L)
CELEBRITY 90 Elec Cont Unit (ECU); 6-191 (3.1L)

CENTURY 87-88 Elec Cont Unit (ECU); 6-173 (2.8L)
CIERA 87-89 Elec Cont Unit (ECU); 6-173 (2.8L)
CIMARRON 87-88 Elec Cont Unit (ECU)
CORSICA 87 Elec Cont Unit (ECU)
CORSICA 88 Elec Cont Unit (ECU); 4-121 (2.0L), thru VIN 500000
CORSICA 88-89 Elec Cont Unit (ECU); 6-173 (2.8L)
CORSICA 90-91 Elec Cont Unit (ECU); 6-191 (3.1L)
CORSICA 92-93 Elec Cont Unit (ECU); , 6-191 (3.1L)

FIREBIRD 90-92 Elec Cont Unit (ECU); 6-191 (3.1L)
FIREBIRD 90-92 Elec Cont Unit (ECU); 8-305 (5.0L), MFI
FIREBIRD 90-92 Elec Cont Unit (ECU); 8-350 (5.7L)

FIRENZA 87 Elec Cont Unit (ECU); 4-121 (2.0L), w/o OHC
FIRENZA 87 Elec Cont Unit (ECU); 6-173 (2.8L)
SKYHAWK 87 Elec Cont Unit (ECU); (4-121, 2.0L), w/o turbo; w/o OHC
SUNBIRD 91-93 Elec Cont Unit (ECU); 6-191 (3.1L)

TEMPEST 87 Elec Cont Unit (ECU)
TEMPEST 88 Elec Cont Unit (ECU); 4-121 (2.0L), thru VIN 500000
TEMPEST 88-89 Elec Cont Unit (ECU); 6-173 (2.8L)
TEMPEST 90-91 Elec Cont Unit (ECU); 6-191 (3.1L)

 

From experience I highly recommend you buy a aftermarket standalone harness to suit whatever ECM you choose ,
for a perfectly tidy install and less frustration whilst gutting all the redundant wiring out of a original harness

Make sure any harness you get has the speedo (VSS ) connection ; some of the cheaper ones do not

http://www.ebay.com/itm/TPI-Speed-Density-MAP-wiring-harness-for-1227730-/141029051080?pt=Motors_Car_Truck_Parts_Accessories&hash=item20d5fc8ac8&vxp=mtr

 

Yeah, was going to do that. Since I am in Michigan, I was going to look very closely at Howel Engineering. Thank you for providing another source for comparison.