Re: stand alone efi options for a 5.9 mag, anyone use hotwire?
[Re: Andrewh]
#1926142
10/05/15 12:01 PM
10/05/15 12:01 PM
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Joined: Feb 2003
Posts: 21,318 Manitoba, Canada
DaytonaTurbo
Too Many Posts
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Too Many Posts
Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
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I used a 1995 harness and a 1999 engine. The OBD-1 harness was pretty easy to reverse engineer. The engine control wiring is actually very self contained within the donor engine wiring harness. I think I only had to hook 3 wires up to the vehicle when I was all said and done. I did snag the sensors off a 95 engine from the junkyard and had to drill and tap the intake manifold on my 99 engine to fit the 95 temp sensor. Swap is turn key, starts and runs like a champ and the swap was dirt cheap. I used a manual transmission. I tried at first to work with the OBD-2 harness/ecu, but it proved to be needlessly overcomplicated and messy in addition to requiring reprogramming to run without the body computer. OBD-2 can be reprogrammed to compensate for modifications, in my case this is not something I'm interested in doing, but for a hot rod it might come in handy. However the options for reprogramming the stock ecu are very unappealing to me, it's not the same as having a stand alone aftermarket ecu. The way I understand it is you have to email your calibration file to some guy, he edits it and emails you back. I don't fancy the idea of needing to rely on someone else like that. However stock type ecu would be your only option for controlling a 96+ OD transmission.
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Re: stand alone efi options for a 5.9 mag, anyone use hotwire?
[Re: Andrewh]
#1927502
10/07/15 02:16 AM
10/07/15 02:16 AM
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Joined: Jan 2003
Posts: 10,634 Freeport IL USA
poorboy
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 10,634
Freeport IL USA
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We installed a Hot Wire EFI for a 97 5.9 in a 57 Dodge wagon. The 97 has the computer controlled trans. We bought a used engine, trans, engine wiring harness and factory computer. We sent our engine harness in to Hot Wire along with the money, and the harness they returned is very nice and is pretty much stand alone. There are only 4 wires you have to connect to your vehicle, but there are also wires included with the harness to connect to gauges and other things you may or may not want to use. The harness has the relays and a small fuse box included and they are wired in, it lays across the motor very well and connects to all the original 5.9 sensors & trans sensors & connections. The harness is long enough to reach inside the car (drill a 2 1/2" hole). We mounted the computer, relays & fuse box on the trans tunnel under a consel.
We ran into an issue because we had updated the body wiring from the 57 to a mid 60s harness. The Hot Wire kit we had made was for the 57 wiring (as to our instructions. Oops!) The tech line guy was great, and when we discovered the issue, the hot wire system worked flawlessly. We have only put a few hundred miles on the car since the Hot Wire kit has been installed (the car is in progress).
I would not be afraid to purchase another Hot Wire kit. I suspects if my son comes up with a late model Hemi, we will be ordering another kit from Hot Wire. Gene
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Re: stand alone efi options for a 5.9 mag, anyone use hotwire?
[Re: Andrewh]
#1929559
10/10/15 12:26 PM
10/10/15 12:26 PM
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Joined: Mar 2007
Posts: 3,287 West Coast, USA
jbc426
master
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master
Joined: Mar 2007
Posts: 3,287
West Coast, USA
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I used a Hotwire harness in my '68 Barracuda 5.9 conversion. I skipped the computer controlled transmission and went with a 200R4 with bellhousing swap. All my gauges are rebuilt factory units keeping the harness a simple plug and play affair. I did use the 2000 EFI injector connectors and an OBDII ECU for a 5 speed Ram pickup.
My tuner sends me tunes to download into my SCT tuner and adjusts them based on my wideband readouts. After reading all the tuning headaches and hoops guys running other systems have to go through, I'm happy I went with this plug and play system. It's great.
Building an EFI fuel system has gotten a lot easier over the past few years too.
1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's 1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)
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