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Unread 09-16-2013, 01:04 PM   #16
Registered User
1987 YJ Wrangler 
Join Date: Jun 2013
Location: downers grove, il
Posts: 57
So on my Jeep, when the replacement 4.0 showed up without fuel injection, I am thinking the PPO just bolted on a 258 manifold with a weber carb. Would it have as simple as that?

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Unread 09-16-2013, 01:25 PM   #17
Web Wheeler
1989 YJ Wrangler 
Join Date: Apr 2008
Location: Detroit, Michigan
Posts: 19,422
Yep, thats it. Manifold and the other stuff and you will be running a MPFI.
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Unread 09-16-2013, 02:05 PM   #18
Web Wheeler
1990 YJ Wrangler 
Join Date: Jan 2011
Location: Helena, MT
Posts: 3,741
Yep you just need everything thing I have to convert back to FI plus figuring out the wiring. hopefully it has the 4.0 flywheel so you wont have to pull the motor that should be easy to check.
build thread: http://www.jeepforum.com/forum/f22/skyj-eccentric-build-1467426/ '90 YJ 5.2 magnum MPI, AX15, NP231 SYE, Dana 30 4.56 open/ 8.8 4.56 detriot locker. 1" shackles
2" BL, 4" stretch all on saggy waggy springs.
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