I just swapped out my 305 for a 350 and Kept my TBI and put it on the new 350. It runs ****ty. I am thinking i need more fuel and air to make this thing happen. I am thinking the Holley 670cfm TBI may fix my probs. Most of you agree, some of you say i need a chip and i should tune it myself. I need to know several things. How would i go about doing computer tuning/PROM tuning myself? I would guess i need software, and how much does it cost and where can i get it. OR can anyone recommend a good place/ person who does this? And as far as engine tuning? {E.x. fuel to air ratio} how do i go about doing that.

1989 RS

 

look at the diy prom board and it will tell you everything you need to know.