Jeep 4.0 or more accurately a 4.6 STROKED 4.0 with Jeep injection hardware???

[doc65]

I actually knew it was a 91 only thing in a YJ, but a cross reference shows it's also used on like 88-94 Dakotas. The 91 XJ does not pass mechanical thru, I have the engine and trans from one here that I pulled out of a 91 XJ as a transplant into an Eagle candidate, I vaguely remember taht my 88 & 89 XJ's may have had a speedo cable, so they might have used a pass thru VSS...

[doc65]

Anyone got a suggestion on a well supported ECM that will run the Jeep MPI and do DIS and alternately one that would do TBI on a 258 with DIS(I know odd combo)

[EagleMark]

The 16197427 and variants comes with TBI and CPI and has hacks for MPFI. We have had some discussion about DIS and it seems possibal any ECM can do this with right parts and settings...

[doc65]

Mark,

CPI? Any ECM will do DIS? I guess I'm missing something in that. Also what is involved in this hack for MPFI that you mentioned?

[EagleMark]

Go to the $0D infor thread and get the xdf, adx and a bin, read the read me's in XDF. There's also a TBI to MPFI zip folder there. I just know of it but have not used it.
http://www.gearhead-efi.com/Fuel-Inj...Information-OD

Have not done the DIS either but from what I read on guys like Six Shooter who did it only involves a crank trigger wheel, which some newer jeeps have on flywheel, the guys have been making a notched wheel and sensor mount off crank.

[Six_Shooter]

The easiest code and ECM to start with for MPFI and DIS, especially on a 6 cylinder, would be $A1, used in the '7730/'7727.

[doc65]

The easiest code and ECM to start with for MPFI and DIS, especially on a 6 cylinder, would be $A1, used in the '7730/'7727.

Ok, I'm sure this is a dumb question, but what is the difference between the two 7730 vs 7727?

[JeepsAndGuns]

The easiest code and ECM to start with for MPFI and DIS, especially on a 6 cylinder, would be $A1, used in the '7730/'7727.

What about MPFI and a distributor, must be SD, prefer NOT to use a MAF, and for a 6cyl.
Still the 7730/7727? Any other possiable ecm options to look at?

Doc, the 7727 is the waterproof one, 7730 is a underdash unit.

Also, I have just finished installing MPFI on the 401 in my cherokee using the 7427. Just had to mod the ecm a bit, and the bin changes. Followed the instructions in the zip file I got here. But I am having to get some air filter and air intake issues sorted before I can drive it.