x2, but there is an alternative to the custom tune. When you look at the limitations of the factory GM TBI ECM, there can be a lot of trial and error involved with custom TBI swaps, especially on to a non- GM engine. There is a guy who takes your computer, and does away with the chip(prom) setup, and uses his own hardware and program to make a computer that learns as you drive.
I am going this route with my scratch build because when I added up the cost of sending and resending a few times the chip + the $50 each time to reflash, I am not spending that much more and getting a way better product. His website is www.dynamicefi.com
. I would send him an email. He always got back to me pretty quick when I had a question.
Hope that helps,
Oh yeah, make sure you get the right fuel pump. I think if I remember right 94 and 95 small block v8 trucks actually had higher psi than the usual 15psi and I think the big block trucks may also have had a higher psi also but not sure on that one. My point being don't just get one that is "for TBI", cause there were a couple of different ones. The v6 and l4 were all 15 psi as far as I know