122749 tuning and data logging

[neo71665]

I'm really interested into trying to tune and data log my 87 blazer. I'm a complete noob at this and the more a research the more I think I'm confused. I know I have a 122749 ECM and have been told I need to swap it out but I haven't been told why or what is better. I'm still running the TBI but might be interested in swapping to a 2.8 f-body MPFI if its easy enough. I really don't wanna rewire the entire truck for the extra injectors and what it has is working fine.

This is the best pin out for my ECM I can find

A1 Green/white Fuel pump relay

A2 Dark brown A/C clutch control

A3 ***not used***

A4 Gray EGR control

A5 Brown/white Service Engine Soon light

A6 Pink/black 12V switched power

A7 Tan/black TCC or shift light

A8 Orange/green Serial data at ALDL

A9 White/black Diagnostic input at ALDL

A10 Brown VSS input

A11 Purple MAP ground

A12 Black/white System ground


B1 Orange Battery 12V

B2 Tan/white Fuel pump signal

B3 Black/red HEI ignition module ground

B4 ***not used***

B5 Purple/white HEI reference

B6 ***not used***

B7 Black ESC signal

B8 Dark green A/C signal

B9 Brown EGR switch signal

B10 Orange/black Park/neutral switch

B11 ***not used***

B12 ***not used***


C1 Pink/black EAC solenoid (Federal)

C2 Brown EAC solenoid (California)

C3 Green/black IAC Coil B low

C4 Green/white IAC Coil B high

C5 Blue/white IAC Coil A high

C6 Blue/black IAC Coil A low

C7 ***not used***

C8 ***not used***

C9 Purple/white Crank input

C10 Yellow CTS signal

C11 Light green MAP signal

C12 Dark blue/white ETM

C13 Dark blue TPS signal

C14 Gray 5V reference (MAP, TPS)

C15 ***not used***

C16 Orange Battery 12V


D1 Tan/white System ground

D2 Black MAP ground

D3 ***not used***

D4 White EST

D5 Tan/black EST bypass

D6 Tan Oxygen sensor ground

D7 Purple Oxygen sensor signal

D8 ***not used***

D9 ***not used***

D10 ***not used***

D11 ***not used***

D12 ***not used***

D13 ***not used***

D14 Light green Injector drive B

D15 ***not used***

D16 Light blue Injector drive A

I know for data logging I'll need the cable and I'm looking to buy a new laptop. What programs will run with the windows7 OS?

If I need to swap to a newer computer for the TBI what do I need to look for and do you have a pin out for it if I have to move wires around?

[robertisaar]

if you need diagrams, i got them. i'm assuming you want to use a ECM that uses the 8192 datastream instead of the 160 that most TBIs got?

and did you mean 1227749? that happens to be the syclone/typhoon ECM...

as far as programs to log: tunerpro RT works great with vista, no reason why it wouldn't work with Win7...

EDIT: rockauto says you should have a 1227429 from the factory...

[neo71665]

duh, I'm an idiot. I meant 1227429. It seems the info I find points to it being only half hacked and thats why I "need" to swap to a newer ECM out of a 88-93 s10 with a 2.8 ecm 1228062

A1 Green/white Fuel pump relay

A2 ***not used***

A3 Green/yellow Canister purge control (not used)

A4 Gray/red EGR control

A5 Brown/white Service Engine Soon light

A6 Pink/black 12V switched power

A7 Tan/black TCC or shift light

A8 Orange Serial data at ALDL

A9 White/black Diagnostic input at ALDL

A10 Brown VSS input

A11 Purple MAP ground

A12 Black/white System ground


B1 Orange Battery 12V

B2 Brown Fuel pump signal

B3 Black/red HEI ignition module ground

B4 ***not used***

B5 Purple/white HEI reference

B6 ***not used***

B7 Black ESC signal

B8 Dark green A/C signal

B9 Blue EGR temperature sensor (not used?)

B10 Orange/black Park/neutral switch

B11 ***not used***

B12 ***not used***


C1 Black/pink AIR divert solenoid (not used?)

C2 Brown AIR switch solenoid

C3 Green/black IAC Coil B low

C4 Green/white IAC Coil B high

C5 Blue/white IAC Coil A high

C6 Blue/black IAC Coil A low

C7 Light blue 4th gear (not used?)

C8 ***not used***

C9 Purple/white Crank input

C10 Yellow CTS signal

C11 Light green MAP signal

C12 ***not used***

C13 Dark blue TPS signal

C14 Gray 5V reference (MAP, TPS)

C15 Light green Injector B (not used?)

C16 Orange Battery 12V


D1 Black/white System ground

D2 Black TPS, CTS ground

D3 ***not used***

D4 White EST

D5 Tan/black EST bypass

D6 Tan Oxygen sensor ground

D7 Purple Oxygen sensor signal

D8 ***not used***

D9 ***not used***

D10 ***not used***

D11 ***not used***

D12 ***not used***

D13 ***not used***

D14 Light green Injector drive B

D15 Light blue Injector drive A (not used?)

D16 Light blue Injector drive A

[Joseph Upson]

Try these guys, they've been around longer than tunerpro and are who I started with.

http://www.tunercat.com/

[robertisaar]

here's an idea of what you can play with when you have an 8062 and a 7429(using tunerpro anyway...)... the ACKU is the 7429, the ANJF is a 8062.

[neo71665]

Thanks alot, I know it seems like explaining it to a 1st grader

[robertisaar]

Thanks alot, I know it seems like explaining it to a 1st grader

after a while, i just accepted the fact that i was studying this a LOT more than the average person does, so i actually expect it...