I'm sure this has been answered before, but I didn't see it in the stickies. Will a 350 tpi hook up to a wiring harness from a 305 tpi and run, provided you pull the chip out of the ecm and swap in a 350 one?

 

yes, pretty sure the only difference is the 350 setup has 22lb injectors and the 305 has 19lb

 

really? but if you have a 305 and change it to 22# injectors you dont have to change the ecm. usually just the regulator. how does changing it to a 350 make you have to change it?

 

hmmm....I thought the regulators were the same. And maybe the MAF setup could adjust to the injectors, but I wouldn't think a SD setup could.....

I'm just learning myself, so if anyone could shed some light on this, please do.

 

well thats exactly it.. the MAF (manifold air flow) would probably work because the ecm would adjust a-f-r and retard or advance timing. but the MAP(manifold absolute pressure) sensor just reads absolute pressure so thats why im thinking it would work.. theres not that big of a change in injectors so im thinking it would be fine.. but he should find someone who already did it.

 

The knock sensor is different on a 350 as well. I think the ESC was different as well on the older TPI's. Not much changed though.