Mass Air Conversion-needing some help
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Senior User
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So two questions before I head to the bone yard this afternoon in search of a MAF harness.
1-if I pull a harness does it have to be for an e4od or can I use one from another trans or even possibly a mustang or t-bird and just transplant my wiring from the trans to the new PCM connector?
2-do I also need the provisions in the harness for 4x4 or is that not in the harness? I have seen where using a 2wd PCM makes you lose the 4lo setup on an e4od but is that due to a lack of hardware in the PCM or programming? I think I would be able to overcome a program issue as I have the SCT chip installed
1-if I pull a harness does it have to be for an e4od or can I use one from another trans or even possibly a mustang or t-bird and just transplant my wiring from the trans to the new PCM connector?
2-do I also need the provisions in the harness for 4x4 or is that not in the harness? I have seen where using a 2wd PCM makes you lose the 4lo setup on an e4od but is that due to a lack of hardware in the PCM or programming? I think I would be able to overcome a program issue as I have the SCT chip installed
FTE Legend
Joined: Jun 2006
Posts: 31,930
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From: Ottawa, Ontario
You can use wiring from any MAF vehicle but truck wiring will be the right length and have the correct layout and my suggestion is to remove the portions you need from this donor harness(it's only 14 wires) and insert those into your existing truck PCM connector, all other options will involve moving a lot more wiring which makes no sense when it's already there and working correctly. 4wd sensing is not just programming it also involves hardware so you will need a 4wd PCM if you want to be able to use 4-low.
Lead Driver
Joined: Jul 2007
Posts: 7,868
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From: Rhode Island
So two questions before I head to the bone yard this afternoon in search of a MAF harness.
1-if I pull a harness does it have to be for an e4od or can I use one from another trans or even possibly a mustang or t-bird and just transplant my wiring from the trans to the new PCM connector?
1-if I pull a harness does it have to be for an e4od or can I use one from another trans or even possibly a mustang or t-bird and just transplant my wiring from the trans to the new PCM connector?
2-do I also need the provisions in the harness for 4x4 or is that not in the harness? I have seen where using a 2wd PCM makes you lose the 4lo setup on an e4od but is that due to a lack of hardware in the PCM or programming? I think I would be able to overcome a program issue as I have the SCT chip installed
Senior User
Joined: Nov 2012
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From: Livermore
I picked up my MAF conversion from Fiveology. The price compared to the others on the market was close to half the cost. E40D 96 bronco ECU, injectorsm harness, Mass Air sensor. I didnt have the time or the experience to dig it out of a junk yard.
F-Series Truck Mass Air Conversion
F-Series Truck Mass Air Conversion
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Lead head Could I not just cut the old ones out of the PCM plug and splice the new ones back in? I planned on pulling as much as I could as long as the harness was still in tact. But you know how a lot of people don't care about the next man and cut and tear up whatever they have to to save a few minutes and a little effort.
svp_evo I had looked at fiveology and talked with them about just buying a harness and I will probably go with them if I can't find a good JY harness to use any time soon. Did their kit come with directions? If so wuold you mind sending me a copy?
svp_evo I had looked at fiveology and talked with them about just buying a harness and I will probably go with them if I can't find a good JY harness to use any time soon. Did their kit come with directions? If so wuold you mind sending me a copy?
FTE Legend
Joined: Jun 2006
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From: Ottawa, Ontario
I'm sorry but you still don't seem to understand what I have said a couple times now. The SD wiring harness does not include wires for sequential injection or the MAF meter and that means the pin locations in the PCM connector where these wires would go are also empty.. there are no pins in these locations and therefore no wires to cut off to splice something else onto. Bottom line is there is no shortcut here you have to open the PCM connector and insert new wires and pins and move and remove a few others.
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Ok. I knew there were holes without wires going to them but I didn't realize there would not be pins in them. Actually wound up finding a complete engine bay harness with everything still intact and the MAF air box and it only ran me $47 for all if it so I pulled that all out an am just going to swap the whole harness out
Moderator
Joined: Jun 2003
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From: Calhoun GA
The only thing that is lost with an AKC0 is 4-low. It is also pinned the same as any other EEC4 MAF ECU, only thing is that that MAF transfer function and injector values are set up for 30lb injectors. So if you don't have 30's and matching MAF then you're going to need tuning right off the bat. SCT did not expand their databases for other MAF types, and IMO, there really isn't any need to. I can use an SCT AKC0 database to tune something like a HOG0 or VEX1, being that they are essentially the same breed of ECU's.
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Logistics Pro
Joined: Jul 2009
Posts: 3,635
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From: Lansdale, PA
Blurry....
What application are you talking about with the AKC0 ecu. It's maf and 30lb injectors makes me want it....
I have 30s and a 70,80 mm maf to choose from also. I'm ready to do my conversion (don't remember ecu code I have) and was actually looking for a maf 460 ecu to use (also have 24lb injectors) for a little upgrade once I do my headers and full stainless exhaust and new intake.
What application are you talking about with the AKC0 ecu. It's maf and 30lb injectors makes me want it....
I have 30s and a 70,80 mm maf to choose from also. I'm ready to do my conversion (don't remember ecu code I have) and was actually looking for a maf 460 ecu to use (also have 24lb injectors) for a little upgrade once I do my headers and full stainless exhaust and new intake.
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UNTAMND there never was a MAF PCM for a 460. The 250/350s didn't get MAF till they went to OBDII. But I have heard of people doing enough upgrades to warrant 24# injectors using a SD 460 PCM as they are good up to about 350 hp and are already tuned for it instead of doing a MAF swap. I would have thought of doing that if I hadn't come across good deals on my MAF conversion parts. I'm in mine about 150 and have everything except an intake tube which can be had pretty cheap if you can find a deal or make one yourself from aftermarket parts. I'm debating on doing my swap now or waiting till I have all the upgrades I want and doing it all together now that I am a lot closer to the MAF swap and I think my old PCM might be fried. Too scared to pull it out and find out for sure
Moderator
Joined: Jun 2003
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From: Calhoun GA
The AKC0 was offered with the GEN 1 lightning MAF swap from Ford; 30lb injectors and 80mm air meter. It came with a ECU jumper and lay-over injector harness and ACT extension harness to relocate that sensor to the air box. I can tell you first hand that this kit needed tuning, even in stock form; the transfer function wasn't quite right and it was fat on fuel, however, normal/daily driving was not an issue at all. One thing I did notice is better throttle response and slight better fuel mileage. The ECU also commands an annoying converter flash during heavy throttle shift transitions and SCT was able to add a couple of parameters to resolve that issue.
Logistics Pro
Joined: Jul 2009
Posts: 3,635
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From: Lansdale, PA
Blurry,
Thanks for the info. Probably for now I'll run the 5liter maf ecu on my bone stock 351. Then after headers, exhaust, and intake I'll see how it runs. Then after I put my worked over iron heads on and cam upgrade, ill upgrade to the 460 ecu if I'm at the limits. Maybe buy tuning stuff and tweak it to be better.
Then if the wife lets me I'll be building a stroker with my roller block and then toss in the fun.
Thanks for the info. Probably for now I'll run the 5liter maf ecu on my bone stock 351. Then after headers, exhaust, and intake I'll see how it runs. Then after I put my worked over iron heads on and cam upgrade, ill upgrade to the 460 ecu if I'm at the limits. Maybe buy tuning stuff and tweak it to be better.
Then if the wife lets me I'll be building a stroker with my roller block and then toss in the fun.