ARthe1

Ok I’ve been thinking about swapping out my 305 tpi for a 350 tpi , just wanna know if I can use the same ecu and harness , or what would I have to change or get because the tpi350 I’m thinking about buying doesn’t have ecu or harness so I’m just tryna get as much help/advice as I can get

Tuned Performance

iTrader: (92)

You can use the same harness and ecm. You will want to get the memcal prom reprogrammed.
You will also need to run atleast 22#hr injectors . Stock tpi 305 uses 19#hr injectors.

91Y84

https://www.thirdgen.org/forums/tpi/...-swap-ecm.html

This covers it pretty well