[I’ve just heard from an outfit called The Detail Zone and they have one that runs $525.00 but requires the 86-88 Mustang computer. It is definitely for Speed Density but in using that particular computer converts it to sequential firing instead of bank firing. In my mind, this would be a wise improvement. In my mind, it should provide better mileage.]

I think all ford EFI including the trucks were sequential firing. I also like this type of firing. I've talked to Scott at the Detail Zone also, very knowledgable. His harnesses would be very clean and it is a matter of plugging it in, no guessing and or refiguring or cutting unused wires out of the harness.

 

All the speed density Ford trucks were indeed batch fired where as all the Ford passenger cars were sequential no matter the system used.

 

Hey Dueller, Did you really mean ALL cars including station wagons and crown vics too? I'm certainly not questioning your knowledge, just clearifying? I have an old '86 Grand Marquis wagon, with EFI and just would like to know what it is?


I'm also wanting to use the wiring from a 1995 E150 van with a 302( this is for another project) with this project I want to use the engine and trans and wiring from the van, and use the top plenum and bottom intake from an old crown vic. I know there is difference, but I've been told if I use the wiring and computer, it wont know the difference? The reason I need to use the crown vic intakes is I dont have hood clearance to use the van intake setup. Thanks for all your help.

Come on all you EFI gurus out there keep this thread alive and put as much info in as possible so as to educate all us dummys

 

Yep, that includes the Crown Vic's.

You shouldn't have a problem with the different intake. Just I would recommend a Mustang upper though as the Crown Vic only has a 50mm upper plenum where as the Mustang has 60mm. The Crown Vic intake flows about 500 cfm with the Mustang at 580 cfm. My 96 Explorer 5.0 intake with 65mm does 690 cfm.

 

the 95 Explorer intake is a GT40 style. Much better than the standard 5.0 Mustang intake

 

WOW! Some great info here!
EFI is definitely here to stay, so the sooner we stop fighting it the sooner the aftermarket will adapt to it as well. Fergie, have you checked with Ford Performance?
I understand they are selling stand alone harnesses for EFI engines to encourage hot rodders to use their engines, they are trying to become the CSB of EFI engine swaps. I don't know which engines specifically or pricing tho.

 

Ford Performance only seems to offer harnesses to enable you to convert to Mass Air, which I already said isn't happening....I wouldn't even want to guess what my local, totally unhelpful Ford partsman would charge for a new replacement harness for the donor application.....


As no one else has been able to offer any sources for harnesses other than those I found & mentioned myself, it look's like I have two options;

1. Economy plan - take apart, the old stock harness I got with the engine. clean it up - clean all the connectors and the appearance of the wires , etc and reuse it.

2. Delux plan - buy a Speed Density (sequential fire) computer from a 86-88 Mustang and the harness from The Deail Zone.

Got a little research to do on this but leaning towards #2.....

Thanks for the input folks.

Later,

 

If you want to throw money away then go with option 2. It seems foolish to throw $500+ at a new harness and computer when the one that you have just may well turn out to be perfectly fine.

 

This might help I bought it for $94 to put on my LS1 It's a stand alone kit.http://www.goindesign.com/ebay/SA1000.pdf

 

Hey Rusty, I can't get that link to work Of course it could be just me??


Mr CMK, You don't happen to have a schematic of what the "bare bones" of the EFI factory harness is and what to cut off and what not to cut off do ya? I have several whole cars to choose from, and the local junkyard is all chevy stuff, so any Ford stuff is CHEAP, cause the guy who owns the yard hates Fords. Thanks for your help with this topic

 

You can always BUILD your own MegaSquirt and make your own harness for around $200.00 - thousands of people have done just that and have been successful. There is no better way to learn how EFI works than to build it yourself - and you will absolutely discover that it is *much* easier than it seems...

Or you can order an assembled unit from diyautotune.com or efisource.com. They also have wiring harnesses available.

Sorry for the "plug" - I am one of the co-creators of the MegaSquirt system. But I will say that just yesterday I got my '54 F100 running on MicroSquirt (a tiny version of the MS-II). Like most EFI setups, it fired right up.

Also, the comparison of SD vs. MAF, the comments here are really good. We support both modes in MS (or a blend of modes for different operating points) and my observation is that MAF will yield great mass airflow numbers, but the sensors are relatively slow (on order of 50 ms) compared to a MAP sensor (around 3 ms). So the MAP sensors (used in SD) are fast and responsive for transients (like throttle stomps) but are also equally reactive to pulsations in the intake manifold due to cylinder filling (which can negatively affect airflow calculations). In the MS system the MAP output sampling is done at the same point on the pressure pulsation curve which helps to minimize the fluxuations, but with a radical cam it can still be very twitchy. In this case a MAF sensor w/ a blend may be a better choice. If you go MAF, grab a Ford or Infiniti Q45 MAF.

- Bruce

 

Bruce,

First off, Welcome to the board!! We're glad to have you. Give us some more details of your 54, engine, etc. I'm a firm believer in fuel injection and I'm glad to see that its becoming easier and easier to adapt to non traditional vehicles.

I'm no stranger to fuel injection systems. I worked for about 15 years as a drivability tech at GM dealerships, ten years at a Caddy dealer. Up here at high altitude (New Mexico) we had some real goofy drivability issues that the factories basically didn't care about (less than 10% of cars manufactured are regularly driven at altitude). I'm no stranger to assembling and soldering circuit boards either and am looking forward to starting on the Megasquirt kit.

Its nice to have someone with first hand knowledge of the Megasquirt here on this board. Co-creator huh? way cool!!! I'm sure that I will need to pick your brain a bit when I get started on my system.

Thanks for your input
Bobby

 

OK - now it will be time to run me off of this board... This particular truck has a SBC. But in the context here an engine is an engine, and if you can mount an injector somewhere - above the throttle plates or in the ports, the rest of the install is the same for any engine.

In fact a couple of months ago I witnessed a setup where there was a spacer pipe below the throttle plates on a single-bore carb (used as a throttle plate only) where there were a ring of six injectors around the circumference all pointing inward. It fired right up and ran great. You can read about it in the November HotRod magazine, the Maverick from Spectre performance where they kept on blasting nitrous and running at the track to see the point of failure.

For a miltiport setup on an existing manifold, you can always add injector seats and fuel rails. You can get fuel rails at rossmachineracing.com, they also have a special cutter bit for sale for drilling fuel rails for the injectors.

- Bruce

 

Hey man, I second what Bobby said WELCOME!!!!! We are so glad you could join us truck nuts!!! I don't care what kind of engine you got!! I got a sbc in mine, and I might change and I might not??I like the way you think about this EFI stuff, and am glad you are here for when I get around to that part. This is kind of like a BIG disFUNctional family??


Welcome!!

 

My favorite part of what Bowling said was "Maverick", I know the car a little bit. We started a club called the MaverickCometGroup and Spectre sponsored our first Nats here in Elizabethtown, Ky. this past July. Anyways, thank you for your imput and I hope you'll be around for a long time to come. I have a couple EFI motors that will need help, I had been looking about The Detail Zone for a harness. They do have some neatly made harness/control board setups, but it is interesting to think I could do it myself.