What to do about my stock ECU

[SwggMsthh]

My Malibu is undergoing an overhaul due to blown head and valve cover gaskets, and I’d like some input on what to do about my stock ECU. My plan is to go all motor with my build with no AC/heater with the exception of power steering. This includes non EGR intake, new carb, headers, and new ignition set up as well.

As of now I’ve removed my AC/Heater box, emissions control system, and unhooked the harness in the engine bay.

Considering what I want to do to the engine, and how much I’ve already deleted, what do yall recommend I do about the ECU? Should I buy a new engine management system or modify my harness for the components I’d only need?

PS; this is my first ever build and am a novice to the car/engine building community. But I’m very dedicated though. I have a Haynes repair manual that’s helped me identify and navigate through parts and wiring.

 

[pagrunt]

Sounds like the ECU will be useless unless the new parts are ment to/need to work with a ECU. The ECU on the earlier cars are more part of the emisssion system & since you have removed it I would just not use it.

 

[SwggMsthh]

Sounds like the ECU will be useless unless the new parts are ment to/need to work with a ECU. The ECU on the earlier cars are more part of the emisssion system & since you have removed it I would just not use it.

I see…thanks!

 

[L05edSS]

I see…thanks!

yeah what was said above you're 1/2 way there just go reg qjet or reg carb & vacuum hei. only thing to think about is if you have a lockup converter whixh was only reason i would have gone with the ecu but i found a b&m system around that.

 

[SwggMsthh]

yeah what was said above you're 1/2 way there just go reg qjet or reg carb & vacuum hei. only thing to think about is if you have a lockup converter whixh was only reason i would have gone with the ecu but i found a b&m system around that.

How do I know if my car has a lock up converter? I think I have a th350

 

[oldsofb]

what do yall recommend I do about the ECU?

 

[L05edSS]

How do I know if my car has a lock up converter? I think I have a th350

are there any wires going to it? i'm sure someone can give you more tip offs as idk much about them.

 

[L05edSS]

found this too.

• Locate the stampings on the side of the transmission. The TH350 had part codes M33, M38 & M39. The TH350C, which is a TH350 with a lock up torque converter, had part codes MV4, MX2, MX3 & MX5.

 

[SwggMsthh]

found this too.

• Locate the stampings on the side of the transmission. The TH350 had part codes M33, M38 & M39. The TH350C, which is a TH350 with a lock up torque converter, had part codes MV4, MX2, MX3 & MX5.

Awesome I’ll take a look tomorrow after work

 

[SwggMsthh]

are there any wires going to it? i'm sure someone can give you more tip offs as idk much about them.

Yes it a connector from the ECU going to it