I have a customer who wants to put a tpi setup on his 88 Iroc that is currently TBI. The setup that he's got is from a 90 Z28 and includes the harness, pcm and intake, etc. My question is what all I need to get this thing swapped over, I know that the 88 harness pinouts and 90-92 pinouts are different. So what all am I going to have to swap over and what's the easiest/best way to do so? What are the differences in the pressures of the fuel pump? Will I have to change that out too or will the new regulator with the TPI setup solve that issue? Thanks, any help is appreciated, I'm not too well versed in TPI.

-Matt

 

You will need to bypass the vats, The tbi pump will not provide enough pressure. You will need to install a acdelco ep-241. You can use the stock optical vss signal but it will need to be pinned to c6 of the 1227730 ecm. The maybe differences in c100 and c201 that you will want to compare.
http://www.austinthirdgen.org/index.php?pid=19
It would be advisable to get new injectors from southbay fuel injectors or have the old ones serviced to help avoid any running /starting issues.