I did a 305 TPI to 350 swap and used almost everything from the 305 sensors / accessories and put it on the 350. All that said after about 6 months a few of my 19lb injectors junked out and I need to replace them. I just got a set of Accel 24lb injectors from Summit. I've read a few different articles on what else I need to get when upgrading the injectors. Some have said if I get a Fuel Pressure Reg I won't need a new eprom but may need a different Fuel pump. One person I talked with said all I should need is a new eprom. I looked at a couple of the Stickeys and didn't see exactly what I was look for. I would greatly appreciate any light anyone could shine on this. I think afterwards it would make a good sticky. This is pretty much a daily driver nothing real radical it's about 300hp. The car is an 87 Iroc.

 

It should run ok without a tune, mine did. I got one through pcmforless. Check them out they are pretty cheap.

 

24's will be fine. 22's will also be fine. AFPR isn't really needed in your application. Your fuel pump will also be fine.

 

You will definetly need a new prom to switch injector sizes..

 

I needed my car tuned for my 24# injectors I installed on my 305.

 

WHAT IT RUN LIKE BEFORE THE TUNING?