So I looked on some thread and got the information to convert my 95tbi setup into a tpi by modifications to the tune and ecm but it doesn't say anything about wiring changes to wire the 8 injectors, the TPS, and idle sensor?
So I looked on some thread and got the information to convert my 95tbi setup into a tpi by modifications to the tune and ecm but it doesn't say anything about wiring changes to wire the 8 injectors, the TPS, and idle sensor?
actually not a lot of work required it would seem, instead of two tbi injectors you just have two banks of injectors. you can splice into the original harness and have tons of length to do it too, since the tbi injectors run all the way to the middle of the intake. original power wire should be good to go too.
im pretty sure the tpi and tbi's tps wiring is the same, but im not sure about the iac?
Alright so I just wire a harness that runs 4 injectors in parallel and connect each harness to the tbi injector harness.
Yep, pretty easy. I got all the injector pigtails from my local pull a part junkyard. I just wired them all together and hooked all the injectors on the right, the the old tbi injector wires on the right, and did the same for the left.
Now there is a couple of internal mods you need to do to the PCM and memcal, as well as the bin. But it works.
I am running a MPFI system with a 16197427.
79 Jeep Cherokee, AMC 401, T-18 manual trans, hydroboost, 16197427 MPFI system---the toy
93 Jeep YJ Wrangler, 4.0L, 5 speed, 8.8 rear, homebrew hub conversion and big brakes, hydroboost, 2.5in OME lift, 31x10.50's---the daily driver
99 Jeep WJ Grand Cherokee limited, 4.0L, auto, 2wd, leather and power everything, 99% stock---the long distance highway ride.
Okay cause I was thinking on getting a mpfi manifold for sbc and just get a friend weld me up a throttle elbow to mount a tpi throttle on it since that would work better with a junkyard turbo build for easy 400hp with a lil room to grow later.
If you re-pin... get a Delphi Terminal crimper. It makes a huge difference!
I found one at Amazon-
http://www.amazon.com/GM-Delphi-Weat...+terminal+tool
When I repinned my crossfire harness to accept a later model GM ECM, I also found it helpful to have the diagrams that showed each ECM terminal (old, new) as well as a custom diagram that I made that showed where the wires were coming from and where they were going to. I used an Excell sheet to show the location and the colors of the wires accordingly.
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