Sy/Ty powering 4.3 TBI.

[JROD Jr.]

I am starting off with a 1988 s15 with a 2.5 4cyl and t5 5 speed. I am swapping in a l35 tbi 4.3 and nv3500. I am then adding sy/ty: manifolds, turbo, computer, and harness. My goal: put down around 200 rwhp tuning the TBI in 2 bar. I have a few questions to start. 1. Will I need any part of the stock 4.3 or 2.5 wiring harness? 2. Will the peak and hold be alright for the low impedence TBI injectors? 3. Can I infact tune TBI injection in 2 bar with the batch fire sy/ty computer?

Note: I have no intention of keeping a/c, heat, or stock gauges.


I would like to thank anyone before hand who has any input on the swap.

 

[leadfoot]

Re: Sy/Ty powering 4.3 TBI.

I am starting off with a 1988 s15 with a 2.5 4cyl and t5 5 speed. I am swapping in a l35 tbi 4.3 and nv3500. I am then adding sy/ty: manifolds, turbo, computer, and harness. My goal: put down around 200 rwhp tuning the TBI in 2 bar. I have a few questions to start. 1. Will I need any part of the stock 4.3 or 2.5 wiring harness? 2. Will the peak and hold be alright for the low impedence TBI injectors? 3. Can I infact tune TBI injection in 2 bar with the batch fire sy/ty computer?

Note: I have no intention of keeping a/c, heat, or stock gauges.

I would like to thank anyone before hand who has any input on the swap.

If you have a sy/ty harness, it is assumed it is for the engine? Keep all harnesses for spares in the event something doesn't work.

If you use a sy/ty (intake) manifold you go from TBI to TPI making question 2 and 3 irrelevant.

Good luck with your project and always run a search before posting.