Speed density to MAF
Thread Starter
|
Junior User
Joined: Jun 2009
Posts: 58
Likes: 0
Speed density to MAF
I know there are lots of posts on this in various places, but I have a specific need.
I have a 97 (old body style, so I came here) F250 4x4 with a 7.5L (460). Hard part, it's an automatic (E4OD).
I'm looking at doing the salvage yard approach to swapping to the MAF, as I will stroke this motor in the near future (545).
Here is what I am looking at right now. I can get a wiring harness from a 96-04 (I think) Mustang v8, which will plug right to the Lightning MAF. This is a 90mm MAF tuned for 42lb injectors already. My truck already runs the 42lb injectors, and they should run the stroker motor.
I think the Lightning ran the E4OD for awhile, but when? I've located an ECU from an 01 Lighning for $250, which is more expensive than a Mustang one, but less than the cost of a Baumann Trans controller that the Mustang ECU requires for the E4OD.
I need to know what year of Lightning (or F150, etc) computer will run the E4OD. Also, my truck is still OBD1. While changing the other, what is required to go to OBD2? Worth it for the added data?
Thanks. Shawn
I have a 97 (old body style, so I came here) F250 4x4 with a 7.5L (460). Hard part, it's an automatic (E4OD).
I'm looking at doing the salvage yard approach to swapping to the MAF, as I will stroke this motor in the near future (545).
Here is what I am looking at right now. I can get a wiring harness from a 96-04 (I think) Mustang v8, which will plug right to the Lightning MAF. This is a 90mm MAF tuned for 42lb injectors already. My truck already runs the 42lb injectors, and they should run the stroker motor.
I think the Lightning ran the E4OD for awhile, but when? I've located an ECU from an 01 Lighning for $250, which is more expensive than a Mustang one, but less than the cost of a Baumann Trans controller that the Mustang ECU requires for the E4OD.
I need to know what year of Lightning (or F150, etc) computer will run the E4OD. Also, my truck is still OBD1. While changing the other, what is required to go to OBD2? Worth it for the added data?
Thanks. Shawn
FTE Legend
Joined: Jun 2006
Posts: 31,930
Likes: 1,499
From: Ottawa, Ontario
OBD2 is a vastly more complicated system with 104 pins at the EEC connector versus the 60 that OBD1 uses. So to use an 01 Lightning computer and harness you're looking at a complete vehicle wiring overhaul because the engine harness is integrated with the chassis wiring harness, and on top of that your motor doesn't even have some of the extra sensors and actuators used with OBD-2 so they will have to be added.
A far easier solution would be to use an OBD-1 mass air truck computer and a tuner such as the Moates module, it will plug right in to the harnes in the truck now and of course you'll have to add wires for the injectors and MAF meter, but you'll have the E4OD controls and you can recalibrate it for your motor so it really doesn't matter if it's a 5.0, 5.8, or 7.5 version to start with.
A far easier solution would be to use an OBD-1 mass air truck computer and a tuner such as the Moates module, it will plug right in to the harnes in the truck now and of course you'll have to add wires for the injectors and MAF meter, but you'll have the E4OD controls and you can recalibrate it for your motor so it really doesn't matter if it's a 5.0, 5.8, or 7.5 version to start with.
Lead Driver
Joined: Nov 2002
Posts: 9,557
Likes: 44
From: Concord, NC
I'm thinking the '01 lightning uses a 4R100 automatic. The stock 460 injectors should be 24 lb/hr. The 90mm MAF from the lightning may use a different transfer function than the mustang computer, which could cause problems trying to get all of the pieces to play nicely with each other without a tuner. If it is anything like the older cobra mustangs with 24 lb/hr injectors, the MAF had the same transfer function as the standard GT MAF that used 19 lb/hr injectors -- the injector size was accounted for in the computer calibration, not the MAF. Just some things to think about...
Thread Starter
|
Junior User
Joined: Jun 2009
Posts: 58
Likes: 0
OBD2 is a vastly more complicated system with 104 pins at the EEC connector versus the 60 that OBD1 uses. So to use an 01 Lightning computer and harness you're looking at a complete vehicle wiring overhaul because the engine harness is integrated with the chassis wiring harness, and on top of that your motor doesn't even have some of the extra sensors and actuators used with OBD-2 so they will have to be added.
A far easier solution would be to use an OBD-1 mass air truck computer and a tuner such as the Moates module, it will plug right in to the harnes in the truck now and of course you'll have to add wires for the injectors and MAF meter, but you'll have the E4OD controls and you can recalibrate it for your motor so it really doesn't matter if it's a 5.0, 5.8, or 7.5 version to start with.
A far easier solution would be to use an OBD-1 mass air truck computer and a tuner such as the Moates module, it will plug right in to the harnes in the truck now and of course you'll have to add wires for the injectors and MAF meter, but you'll have the E4OD controls and you can recalibrate it for your motor so it really doesn't matter if it's a 5.0, 5.8, or 7.5 version to start with.
absolutely the best info I've received on this swap. Do you have any part numbers for this? Or at least years and I can go from there. Any tech articles or wiring diagrams? Thanks for anything you have and for the clear information.
Thread
Thread Starter
Forum
Replies
Last Post
Scndsin
1987 - 1996 F150 & Larger F-Series Trucks
34
Oct 25, 2014 02:41 PM
Blurry94
1987 - 1996 F150 & Larger F-Series Trucks
1
Apr 2, 2005 11:42 PM
