MAF swap questions
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Posting Guru
Joined: May 2006
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From: Iowa
MAF swap questions
I have a 94 F-150 Reg Cab 5.8/E40D
Been reading a lot about the MAF swap and i might know where to get a donor truck if need be.
My question is exactly what all is needed from the donor truck to do this swap? ECM,Wiring Harness? Wondering what specific harness's are needed.
I have seen this a lot of the forum latley and seems to be just a plug and play type of deal? Or is there some severe re-wiring needed?
Also what gains are there with the MAF system over Speed Density as far as power and MPG. I assume none at stock and that the MAF system is just easier to Tune.
Thanks
Been reading a lot about the MAF swap and i might know where to get a donor truck if need be.
My question is exactly what all is needed from the donor truck to do this swap? ECM,Wiring Harness? Wondering what specific harness's are needed.
I have seen this a lot of the forum latley and seems to be just a plug and play type of deal? Or is there some severe re-wiring needed?
Also what gains are there with the MAF system over Speed Density as far as power and MPG. I assume none at stock and that the MAF system is just easier to Tune.
Thanks
Elder User
Joined: Mar 2009
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there is some at stock you will see probably about a 2-4 mpg increase in economy stock and a slight boost in power but if you do ANY engine upgrades you really need to convert it to mass air because some of the computers programming is set
FTE Legend
Joined: Jun 2006
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From: Ottawa, Ontario
You won't see any HP or milage gains on a stock motor since it's not the EFI system that determines this it's everything else(vehicle size, weight, gearing, tire size, powertrain combo), and for parts ideally you want a harness from a '94 or '95 and of course a 5.8/E4OD computer.
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Posting Guru
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From: Iowa
Well im not as familure with this style of truck.
I know my ECU on my 99 is tied to everything under the hood and everything in the dash.
Will it literally just bolt in and plug in if i have the harness and ECM? I doubt that its that easy. Thats why im looking for more in depth list and description.
I know my ECU on my 99 is tied to everything under the hood and everything in the dash.
Will it literally just bolt in and plug in if i have the harness and ECM? I doubt that its that easy. Thats why im looking for more in depth list and description.
FTE Legend
Joined: Jun 2006
Posts: 31,930
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From: Ottawa, Ontario
Yeah I'm not that familiar with the wiring on that vintage truck either so I can't say with 100% certainty if it is as simple as removing a couple portions of the engine wiring and replacing them with the MAF versions.
Senior User
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How do I tell if I have the MAF system or the Speed Density ststem on my truck? I have a 1993 F250 ext cab 4x4 with 5 spd. thanks mat
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Postmaster
Joined: Jan 2009
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I don't think a 93 will have mass air , but if it did there will be a meter at the end of your air intake tube by the air box with a wiring plug going to it .... Lew
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