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Topic: Holley Terminator X (Read 3284 times) previous topic - next topic

Re: Holley Terminator X

Reply #45
Yeah, I can see about replacing the harness!

I haven't looked into replacement harnesses much, but on paper an all-in setup for the PiMPxs is $1400. Pure plug-n-play except wiring in a WB 02 (the leads are there though). Has self-learning like the Holley.

Wasn't sure if you'd looked into it and found some drawbacks down that avenue. I'd like to go standalone eventually and get a new harness too. I don't have an issue tuning an EEC-IV, but they're getting harder and harder to source.

Re: Holley Terminator X

Reply #46
Which computer harness from Ron Francis were you looking at?  As far as I know he only has the ECU harnesses for turbo coupes not V8 cars.  There is an ECU harness specific to the Pimp for V8 cars but I am pretty sure it is stand alone i.e. does not plug back into the dash harness.

83 351W TKO'd T-Bird on the bottle


93 331 Mustang Coupe - 368 rwhp

Re: Holley Terminator X

Reply #47
Which computer harness from Ron Francis were you looking at?  As far as I know he only has the ECU harnesses for turbo coupes not V8 cars.  There is an ECU harness specific to the Pimp for V8 cars but I am pretty sure it is stand alone i.e. does not plug back into the dash harness.

They have the fuel injector harness as a stock item. Looked at it back in 2018. I think it was $160. The main harness would be an order item. Just helped a friend install it in a 57, 5.0 TBird. Ordered it with 20ft wire so the computer would go behind the seat. Came with all the plugs at the engine and the computer side wild. Ran the cable from the computer to a terminal block. All the wiring came marked on each wire the full length. It might of been a special order. But they will build any combination you want.
1987 Turbo Coupe, 306, Trick Flow Track Heat heads, Comp Cam, Trick Flow Pistons, Eagle Rods, Center Force clutch, T-5, 8.8 w/373 gears, and a bunch more

Re: Holley Terminator X

Reply #48
The two systems I looked at were the Holley and Megasquirt. The reason I picked the Holley was it came with the wiring harness and seemed to have pretty good tech support. I talked with the Holley rep a few times before I bought it. I did not know about the Pimp set up. I'm an old guy and not really a computer whiz so I'll have to leave the tuning to an expert. Holley told me it would come with enough information to get the car started and then it's self learning. With the extra sensors, fuel and oil, plus the two cables you might need to plug in a laptop it came close to $1400.
1987 Turbo Coupe, 306, Trick Flow Track Heat heads, Comp Cam, Trick Flow Pistons, Eagle Rods, Center Force clutch, T-5, 8.8 w/373 gears, and a bunch more

Re: Holley Terminator X

Reply #49
Which computer harness from Ron Francis were you looking at?  As far as I know he only has the ECU harnesses for turbo coupes not V8 cars.  There is an ECU harness specific to the Pimp for V8 cars but I am pretty sure it is stand alone i.e. does not plug back into the dash harness.
https://www.stinger-performance.com/store/pimp-harness-sequential-8

Re: Holley Terminator X

Reply #50
I am aware of the stand alone harness like the stinger, holley, and painless but that does not solve the problem for those that want to keep the OEM ECU and harness.  Last time I checked on Ron Francis' website (couple weeks ago) the OEM style injector harness is right at $315 now for a V8 car.  I called them and from what I understand they are not going to build any OEM style harnesses for Mustangs as they cannot locate a couple of the connectors.  Sucks as the stock ECU harness are getting more brittle by the day.  Issues with the OEM harnesses on the Mustangs is they connect to the dash harness but I do not know if that is an issue with the Birds and Cats although I would assume it would be.

I am only going down this rabbit hole as my '93 Coupe needs the ECU harness, injector harness, O2 harness and AC compressor harness.  All of them I bought used when I converted the car from a 4 cylinder and they are not in the best shape.

https://www.foxtbirdcougarforums.com/index.php?topic=41403.new#new


83 351W TKO'd T-Bird on the bottle


93 331 Mustang Coupe - 368 rwhp

Re: Holley Terminator X

Reply #51
When I did this last rebuild and went to re-install the wiring harness I said several prayers. I tried to remove the tape on the injector harness to check the wiring it came off in chips. Snap, crackle, pop. I gave up. Everything worked except the green/yellow from distributor to coil. I did make a new harness, using the existing plugs for the A/C clutch, manifold air temp, oil pressure.

If you're good with soldering you can make your own harness using MTW, (Machine Tool Wire) wire. Easy to solder and flexible. There are connectors available so you can replace the "salt and pepper shakers" wit an actual connector.

This is a pretty good, affordable crimper for any type of terminal you might encounter.

www.amazon.com/gp/product/B0045CUMLQ/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1

I do have a PDF Catalogs of Ford electrical connectors. It shows the Ford connectors with the part numbers. You can find them if you Google "Ford Wiring Pigtail Kits". Most are PDF's. Unfortunately I don't think you will find any for our cars.
1987 Turbo Coupe, 306, Trick Flow Track Heat heads, Comp Cam, Trick Flow Pistons, Eagle Rods, Center Force clutch, T-5, 8.8 w/373 gears, and a bunch more

Re: Holley Terminator X

Reply #52
Forum won't let me quote Aerocoupe. Odd...

I think the OEM ECU is still the tits. From a basic ECU standpoint it still kicks the piss out of any aftermarket system.
However, the physical ECUs are getting old and in shorter supply. Ford isn't making all of the connectors to be able to make a OEM-type new harness from scratch. You could still use COTS connectors and make a new harness, but that's quite a pain. I'm leaning towards going full aftermarket. I just don't want to deal with 32+ year old electronics when there are other options.

Re: Holley Terminator X

Reply #53
Forum won't let me quote Aerocoupe. Odd...

I think the OEM ECU is still the tits. From a basic ECU standpoint it still kicks the piss out of any aftermarket system.
However, the physical ECUs are getting old and in shorter supply. Ford isn't making all of the connectors to be able to make a OEM-type new harness from scratch. You could still use COTS connectors and make a new harness, but that's quite a pain. I'm leaning towards going full aftermarket. I just don't want to deal with 32+ year old electronics when there are other options.

I'm in agreement about the EEC-IV. The only aftermarket system I think is close is from Pro-M. It uses a new Ford processor, is OBD-II compliant, and includes a new harness. The two things that keep me from switching are cost ($2K) and I'm pretty sure it's not plug and play for our cars like on a Fox Mustang.
88 Thunderbird LX: 306, Edelbrock Performer heads, Comp 266HR cam, Edelbrock Performer RPM intake, bunch of other stuff.

Re: Holley Terminator X

Reply #54
Well I lucked out and got an NOS M-12071-C302 ECU harness along with the NOS injection harness, NOS O2 harness (manual and auto both) and the AC harness for $600.  Some minor wiring and it will be a drop in.  Anyhow, back to what the thread is supposed to be talking about and sorry for the hi-jack.

83 351W TKO'd T-Bird on the bottle


93 331 Mustang Coupe - 368 rwhp