ECU / WHERE TO GET THE GOOD ONES

Where can you buy good units? Seems like ones that have "Chrysler" on them have about a 50% failure rate.

Aftermarket or ???

thanks

Do you mean ECU? If so read my post on the bouncing timing mark in this section.

Yes, I did. and I will

Mopar Performance P4120505 Orange

Mopar Performance P4120534 Chrome

Have not been made in years

I have been using the blue one out of JEGS. This is also the one that Ehrenberg pushes on his e-bay store. I like it. Have used it on three cars now, I think it is better than the orange box at start and idle. Have had no problems with it.

I mounted one behind the front passenger headlight on my Charger, worried about heat. But the other two have been on the firewall and have done fine.

You do need a ballast with it. I also run an Accel 8140 coil (repainted black) which seems like a good match for it.

Note...this is a street driven car

What about trying the Rev-n-nator orange box?

A few months ago I was looking for one, and I just scouted epay and got a few aftermarket brand NOS ones made 30-40 years ago I got a niehoff, I think an etron and a blue streak
All brand new but old enough to be American made, bought from different sellers.
So far I have used 2, one for a lean burn delete on an 85 D 150 and the 2nd one to rescue my son's 80 D150 that wouldn't pull itself to the parking space when he coasted into a parking lot and it wouldn't pull itself into the parking spot just in front of where he has stopped, as the potting had all melted out of the original 40 yo ECU.
#3 is going into my 78 Fury for it's lean burn ectomy. I do look when I am in the boneyards for them, would trust a used one that works when I plug it in over a new, current unit from today's parts stores that was made who knows where. At least as a ready spare

Out Of Stock - Has been for months , Maybe a year ?


Standard LX101 is about as good as it gets from any parts store

Problem is the original power transistor and quality substitutes went out of production and the redesign isn't as robust.

What year / timeframe did that happen?

Well, the ST version went out of production in 2013, not sure when the Motorola version did. You can get offshore versions of the Motorola one, but the kwailty is real poor and even then the genuine Motorola one was not as capable as the ST one, 10A capacity versus 15A.

Cut open a current parts store ECU and there is just a modern style chip in it. Nothing like the originals and the transistor is just there for show. I put a 4 pin GM module in a old Chrysler ECU body and run that.

JEGS

https://www.jegs.com/i/JEGS/555/40805/10002/-1


Summit

https://www.summitracing.com/parts/sum-851021

Gut an old ECU and put an 4-pin GM HEI-module in it.
Ensure a good coolingcontact againt the housing and connect the pins to the original connector on the inside, no-one will know the difference.
Howto-manuals can be found online with a simple search.

has been told the Standard LX101 gets a good rate of use without failures

on the Hi-Rev 7500 box I have got splitted experiences. Is my spare one. I used for a week before get the Rev-N-Nator, but a friend of mine got it and last long 3 or 4 months.

If you can find one of these, get one! Works great in my car...no problems at all, and has adjustable rpm rev limit as well. I use the MSD Blaster 2 coil and 4 pin ballast.

Is this one (hrr688) on eBay the rev-n-nator?

Rev-n-ator says rev-n-ator on it.

http://rev-n-nator.com/

Thanks bro. if the revnnator is going to be out of stock for quite awhile I'm wondering if this one would be a suitable substitute?

No idea, never used either. I still run points.

Got one off e-bay a couple of years ago. Sellers name was: rehrenberg. Its blue in color and suppose to rev to 7500 rpm. He clams it's the most reliable ECU on the planet. Had it 2 years so far and no issues with it.. Cost around $38 bucks. If I could cut & paste it here for you I would, but I'm a computer dummy. Maybe someone reading this post will help out.

it has been already posted, sold by jegs