I have a '92 XJ that I will be stroking soon and was wondering what computer/sensor modifications I need to do. Unichip does not produce a piggyback for pre-93 and I have not found any good information here or on Pirate. Thanks for your help...
Robert
Stroked 1992 XJ Questions
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Mgardiner1
- Donator
- Posts: 574
- Joined: August 2nd, 2008, 6:19 pm
- Stroker Displacement: 284 CI
- Location: Wading River, NY
Re: Stroked 1992 XJ Questions
24# ford injectors is all you will NEED. Chances are the stock ECU will do a good job handling the AFR, i know mine does.
oletshot wrote:....and silvolites are only cast not hypericantspellits.
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Boilermaker
- Donator
- Posts: 29
- Joined: February 13th, 2008, 5:47 pm
Re: Stroked 1992 XJ Questions
Apparently they do, i have no experience with it tho. More info here:Unichip does not produce a piggyback for pre-93
viewtopic.php?f=5&t=387
1992 MJ Eliminator
Stroker in progress: Lunati Cam, Diamond Pistons, 4.0L Rods, 4wt Crankshaft 3727 Casting, Clifford Ceramic Coated Header,
99+ Intake, 62mm Throttle Body, 24# Ford Injectors
Stroker in progress: Lunati Cam, Diamond Pistons, 4.0L Rods, 4wt Crankshaft 3727 Casting, Clifford Ceramic Coated Header,
99+ Intake, 62mm Throttle Body, 24# Ford Injectors
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Comanche91
- Donator
- Posts: 156
- Joined: February 13th, 2008, 4:51 pm
- Stroker Displacement: 4.6L
- Vehicle Year: 1991
- Vehicle Make: JeeP
- Vehicle Model: Comanche
- Location: Sweet Home Alabama
Re: Stroked 1992 XJ Questions
I have one on my 91. It's not exactly PNP; has to be hardwired into the ECU harness and will work on all OBD1s. Easy to do.Boilermaker wrote:Apparently they do, i have no experience with it tho. More info here:Unichip does not produce a piggyback for pre-93
viewtopic.php?f=5&t=387
91 Comanche LWB, AW4, Hesco 4.6L, D44 Trac-lok, CHROME freak, ROLL TIDE
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Cheromaniac
- I live here
- Posts: 3290
- Joined: March 8th, 2008, 12:58 pm
- Stroker Displacement: 4563cc
- Vehicle Year: 1992
- Vehicle Make: Jeep
- Vehicle Model: Cherokee
- Location: Cyprus
Re: Stroked 1992 XJ Questions
Same here. Ford Racing 24lb injectors, stock computer, stock MAP voltage, and stock fuel pressure regulator. Goes like a raped ape.Mgardiner1 wrote:24# ford injectors is all you will NEED. Chances are the stock ECU will do a good job handling the AFR, i know mine does.
1992 XJ 4.6 I6 Stroker - 5MT - 200rwhp 258rwtq - Sold 
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Mgardiner1
- Donator
- Posts: 574
- Joined: August 2nd, 2008, 6:19 pm
- Stroker Displacement: 284 CI
- Location: Wading River, NY
Re: Stroked 1992 XJ Questions
I think it depends more on how nuts you wanna get on tuning.... mine could run a scosh richer and WOT (and i plan to use my PSC to impliment this when the weather warms) There also seems to be a real HP wall around 4500 RPM, my friend felt it too, he asked if i let off the throttle cause thats how much it dips in power. I have yet to make a recording with my AFR setup to see what happens to the exhaust gas when that condition occurs
oletshot wrote:....and silvolites are only cast not hypericantspellits.