New to Strokers, ECU Question

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bpranes
Where's the "any" key?
Where's the "any" key?
Posts: 23
Joined: July 14th, 2013, 9:38 am
Stroker Displacement: 4.6L
Vehicle Year: 1988
Vehicle Make: Jeep
Vehicle Model: Cherokee

New to Strokers, ECU Question

Post by bpranes »

Alright guys, I have a 88 XJ Renix and I built a 4.6 stroker for it. I used my 88 block, HO head, 99+ intake mani, 93+ throttle body, bigger injectors, blah blah blah.
What do I have to change ECU wise? Not to familiar with this programming/tuning crap. I already order a Hesco adapter for my TPS. Swapped all the adapters off my old intake onto new one, same with block. Motor's still on a engine stand, jeep is stripped down.
Any other adapters I will need? Anything I should know? The bolt for the sensor on the back of the head isn't on the new HO head, what do i do about that? Will the ECU know what to do with all this different shit?
Like I said, I'm not to familiar with this crap, and this is my first jeep. I'm doing a COMPLETE rebuild on this damn thing though
User avatar
Cheromaniac
I live here
I live here
Posts: 3293
Joined: March 8th, 2008, 12:58 pm
Stroker Displacement: 4563cc
Vehicle Year: 1992
Vehicle Make: Jeep
Vehicle Model: Cherokee
Location: Cyprus

Re: New to Strokers, ECU Question

Post by Cheromaniac »

bpranes wrote:What do I have to change ECU wise?
Nothing. Just keep your existing Renix ECU and get a set of Ford 24lb/hr injectors to feed your stroker.
bpranes wrote:The bolt for the sensor on the back of the head isn't on the new HO head, what do i do about that?
You're referring to the hole in the back of the head for the coolant temp. gauge sending unit so I guess your head must be from a '96-'99 4.0 (0630 casting). You could drill & tap an extra hole in the thermostat housing and place the sending unit there, though you'll need to extend the wiring so that it'll reach.
1992 XJ 4.6L Poor Man's Stroker - 5MT - 246hp & 311lbft (crank) - Sold :cry:
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