Would a harness/computer from a 94 up MAF truck/van swap in? Been thinking of doing the swap on my 93 van, and I know some 94's and 95 up had the MAF. Is the Mustang setup better?

 

In terms of all out performance, you won't find a better mass air computer than the 89-93 manual transmission mustang computer. However, I'm guessing your van has the E4OD, so the mass air truck computers for an E4OD transmission could be your easiest option. It would still require you to wire the injectors sequentially, add mass air wires, and maybe a couple other pin changes, but it would work with the transmission, which is the biggest obstacle, I think. I am not familiar enough with the harnesses in those vehicles to know if they would just swap like you want, but if you got one, it's easy enough to check all the connections to see if everything (besides the mass air and injector stuff) is the same. You can use a '94-'95 mustang computer VEX1 as was mentioned earlier for the electronic transmission, and could possibly use that with a harness from a mass air truck ('94 or '95). Another option, probably a rare option would be to find a mass air first gen lightning (don't know how common these are) and get the computer from it.

Thanks 94F150 for the words of encouragement. I'm majoring in mechanical engineering, and I'm now getting into the hard stuff (but very applicable I might say). I also help design and build the Formula SAE race car each year for the annual competition between around 140 schools in Detroit (coming up in May). www4.ncsu.edu/~ewpoe , you can see some pictures of the car if you like. The ones of testing were at Goodyear's test facility in Akron, OH (free tires are wonderful!). We also have a website which hasn't been updated in a while, but it has some cool pictures no less: www.wolfpackmotorsports.com

 

Yeah, you should be able to use the VEX1 with a 94-95 truck. I used it previously with a 95 Bronco. I will be having it put in my 94 F150 truck week after next, I'll let you know hiow that goes. I do remember that the Mustang has two o2 sensors and the truck had just one, so a change had to made for that. Other that that, I believe all they do is program it for the parameters of your paticular engine configuration.

EPNCSU...Checked out your University photo site and the wolfpackmotorsports, looks like a lot of fun. What a great learning opportunity too. Enjoy it and soak up as much as you can my friend. Its all valuable information for the years ahead.
Now I know where your symbol comes from too, cool!

 

Nope no E40D. Just the AOD in mine. So I should be fine with a Manual trans system with this trans? Or would I still need a auto computer? Also now see if I have this right? The Mustang computer fires the inj's seprit. And being the 5.0LHO, and 5.8L use a diferent fireing order, all I wold have to do is rewire to the non HO order, right?

Thanks for all the help. All my past work has been on carb motors, and this is my first step in to fuely motors.

 

I would get an auto computer from an '89-'93 mustang, the most common catch code being A9P. It is for the non-electronic automatics, and would probably do better with that than a manual transmission computer. You could however, probably get a manual transmission computer to work, although you're probably better off with a computer for an auto. The mustang computer fires each injector individually, in the 1-3-7-2-6-5-4-8 order. To run it on the regular 302 firing order, just switch the pins for 3 & 5, and 4 & 7. The injector setup will be completely different than stock, since the stock computer uses one wire to fire 4 of the injectors, thus 2 total wires for all 8 injectors (plus one power wire).

 

BTW sorry to Hijack this thred, but lots of good info in this one, might as well throw in my Q's also.

Now to the topic. Other then the AFM setup that will allow me to run more mods on this motor, is there any proforamce gain just with the stand alone swap, without more mods? Is the individually fired inj's of the Mustang harness/comp better then the batch fire of the non HO setup?

 

Stand alone systems can offer more due to setting your own fuel and timing curves. But it takes time to get it right for the best performance gains. Like dyno time, it can be expensive but all in all it is better.

 

There is more performance gain than I expected with my mass air swap. You can get a custom chip burned for whatever modifications you have done to the engine so the computer can still control it properly. The throttle response with the mass air computer is much quicker than with the truck computer, mostly due to sequential injection. With sequential injection, fuel mileage can improve, and idle gets smoother as well. Sequential injection is most useful at lower rpms, so at high rpms, there isn't much difference between sequential and batch. Most of us driving trucks run in lower rpm ranges anyway, so there is a potential to help out a lot in daily driving performance. Trucks were the only vehicles that were batch fired, as far as I know - even the speed density mustangs had sequential injection.

 

The A9 family would be a nice upgrade from SD, but I can't see doing this on a truck with an electronic tranny. You would not believe how many different ways an E4OD can be tuned to perform better with added HP...which is why a VEX1, WAY1, BIO1 and AKC0 would be the way to go.
For a manual tranny, I've been told that an engine harness from a 95 stang and T4M0 would be far better than any of the PCM's from the A9 (87-93 stang) family.

 

89-93 PCM's are much much better than the '94-'95 PCM's. Pro-M makes conversions for the '94-'95's to allow people to run the older computers in them, because they are supposed to be better. For an E4OD transmission, you're absolutely correct. For an AOD, I'd definitely go for the older 89-93 non-electronic auto computer.

 

I've never been in any of the stang computers, but one thing I can say is that the tuning support for 87-93 computers is HUGE! You can go anywhere and have them tuned. I read that the "tuning" advatages with the T4M0 (manual) and VEX1/WAY1 (auto) were better than the A9L. This topic has been covered alot on the NLOC....here's one that makes for some good reading.
http://www.nloc.net/forum/showthread...step+backwards

 

Wow, that's a good read. Is the T4M0 EEC-V? It makes sense that the newer computers are better for tuning, since they probably have more fuel and ignition maps built in to start with. I have no idea what the differences would be, although I think that the '94-'95 mustangs did not have a BAP sensor (I don't know how that worked - I could probaby figure it out with enough reading though). I am pretty familiar with the A9 computer family after doing a mass air swap with one of those in my truck, but I don't know a whole lot about the newer ones. The VEX1 is definitely one of the best options for mass air swaps on electronic auto vehicles.

 

I think it is EEC V....but I don't know if they use a BAP sensor or not. I know A9's can data log to a Tweecer R/T, but what about to some type of scan tool?

 

If the tool plugs into the service port on the back of the computer, then it should be able to log data (I think). There's some stuff in this: http://www.austincc.edu/cloud/efi/eectch98.pdf about the service port, and possibly data logging, but I can't remember for sure. I know I've seen somewhere a list of some computers that support data logging, but I can't remember where.

 

That's some very good info there (right-click...save)...Many of the tables/scalers are the same as the ones I access and modify with the SCT tuning software I use on my GEN 1 Lightning. There's well over 300 different parameters within the AKC0 that can be modified (and I'd say the VEX1/WAY1 are pretty darn close to that)...and anyone of these would be an excellent option for a mass air conversion. However, the A9 family appears to have the ability to support any street/strip/off-road combo that most are looking for (manual tranny'd or AOD)....I guess we could look at some of the fast Mustangs that are out there and that's enough proof. I can understand why the the A9 family would be more attractive for someone with street/strip/off-road combo...the knowledgebase is awesome and support for these processors is everywhere.