Anyone installed the Hesco MPI kit for 4.2

[shanebo]

I was surfin the net looking for a sollution to the crank position sensor dillema i am going to have to deal with when I found a link to Hesco. It claims to be a plug and play EFI sollution for our 4.2's. It sounds great but has a hefty price tag of around 2400.00. I guess I could start socking away cash but Id want to be darn sure this thing is what it claims to be if Im gonna drop that kind of $$.

[wagoneerhauler]

I don't know all your plans but for that $$ you should get a free 4.0 to go along with it.  That might be the better option.  Find a running Jeep with the 4.0 and swap motor and EFI.

Or wait till Eaglefreek does his Megasquirt and see what you think of that.

[BenM]

I've never done it, but I've read about it. For stock engines, people report it's just about the same as the multiport kit. Most of the parts are 6-cylinder GM, and if you can get a hold of a chevy V6 you're 90% there, you just need certain colored computer modules.

You'll add an adapter for the throttle body and then have your computer re-flashed. There are kits if you want to tinker with the fuel maps yourself, or you're running a custom cam. You can save $$ with a junkyard setup.

The disadvantage is it's technically capable of less power because it's a wet runner. Maybe slightly more emissions and you have the rich/lean cylinder mix the stock intake causes. There's no stock parts swap that will work without a re-flash. No integrated ignition system.

The advantage is a simpler system, one you can move to a new car easily. Much better tolerance of radical cams and the ability to use 2x3 or 4bbl setups. It can blend in on an engine easier, it uses a standard 4bbl air cleaner. It can integrate with HEI or compatible systems to adjust spark if you're into a radical ignition system.

Oh, and another disadvantage, if you are changing altitudes, you should occasionally stop and turn off the engine so it can re-calibrate the MAP sensor.

[eaglefreek]

Ben I think you may be confused with a TBI kit. The MPI kit Hesco sells is a Mopar part and is all OEM Jeep parts except for the custom wiring harness and front CPS damper. You could buy just the harness and CPS and get the PCM, manifold, throttle body, and injectors used for pennies on the dollar.

[shanebo]

I read further on the hesco website. I see they do make a CPS conversion that would work great...and much cheaper alternative to the whole EFI set up.

[tougeagle]

I read further on the hesco website. I see they do make a CPS conversion that would work great...and much cheaper alternative to the whole EFI set up.

That CPS conversion is for the Jeep computer. Or, if that's what you're talking about.... My transmission (well, my replacement trans) was 290 bucks from J&B autocrusher in Denver, came with full warranty, shifter, clutch arm, slave, bellhousing, throwout bearing even.. A new clutch kit was 100 bucks and a flywheel was 50 bucks from the Bay and the cps was 5 dollars at a junkyard. So, for 300+ you can get a damper and sensor which are not as accurate as the stock setup, or for 150 bucks more have an upgraded transmission with stock cps config, and brand new clutch (if you are going manual)... that's my .015. Here's my other .005..

Hesco is the dream jeep toy store and I have a very expensive wishlist that will be realized one of these days, but because of their overhead and general monopoly in this sort of niche market, they have ridiculous markup, and their prices continue to rise. There are some parts on their site that are priced decently, such as their fuel pumps, but overall, IMO, if you have a little knowhow or an ability to learn, you can have fuel injection and far more power and an upgraded drivetrain to go with for around 1000 less than just their intake manifold, computer, sensors, pump and wiring in their kit.

But, that's also a matter of personal preference.
Okay, so that was more like .25 lol

[ericarmstrong]

just wait a month and ill cut you a deal on my tbi setup. ;-).  Seriously though, withouth the inmproved flow of a 4.0 head you'll see a minor difference between mpg with tbi vs mpi. The tbi setup is very simple and easy to customize.  If your going to do an mpi setup i agree with everone else,  upgrade the drivetrain at the same time. You can find a wrecked donor rig for half the cost of the mopar mpi kit.

[shanebo]

My bigges gripe was having to drill the bell housing for a CPS....I found a few alternatives though so Im gonna continue on with my junk yard EFI as planned....

[BenM]

Ben I think you may be confused with a TBI kit.

Darn it, I had to look that up again. I could have sworn Hesco made a TBI kit, but that's Howell! I had a brain cell short out.