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MegaSquirt your 4.6

Lordgufi

Lordgufi

Well-Known Member
http://www.diyautotune.com/tech_articles/how_to_megasquirt_your_ford_modular_mustang.htm

While that looks intimidating and all you can hit up www.diyautotune.com and have them do the hardware mods for what you need.

To do this conversion its easiest to use a Edis8 from a 90-97 4.6 modular ( for those who have a 96-97 your in luck, you have one )

I am currently writing the pinouts on the diagrams from an Haynes manual, not the best but for what its worth it currently works and it hasn't steered me incorrectly just yet.

The wiring is Very easy. I'm eventually going to be installing this ECU into my car, as Tuning is capable of being done on the fly, the only reason the ecu needs to be reset is if you change some of the constants. These ecu's have been used to power 1000+ hp ls1's, 4g63's, Suby's and many hondas toyotas and for Carby to EFI conversions.

This IS the route i will be taking. I am not going to deal with the stock ecu and its unknowns any more, no longer will i deal with its reverse engineered software from different companies.

the ecu in its Unassymbled form is 140 bucks, + the price of a soldering iron and time.

I personaly will be having mine built for me by DiYAutotune.com and having the MSnS-Extra firmware installed which allows the v2.2 ms1 board full timing control via software mods instead of upgrading to the ms2 processor ( we dont have an IAC stepper motor so its uneeded )

Requirements for running one of these ecu's on our car, a laptop with some type of DB9 port ( USB version or one onboard the pc ), windows, linux or Mac OSX

there are multiple ways of tuning using the Megasquirt ecu such as using Megatune on Windows or via Linux under a windows emulator called "winE".

I personally will be using TunerStudio as it has a guage interface that i may end up installing a Carputer with a 8 inch Liliput screen and replacing my entire guage facia with it. my guage face would look like this

tunerstudio.jpg


MORE TO COME
 
E

ears

Well-Known Member
atl this is more for more easily tuning,,,, and its not smog legal!!

however you can get rid of all the inconsistancies in your power by erasing all the fault codes that the ecu looks for,,, do away with pats,,, and all these things!! you wont have so many variables interfering with the performance of the car!!! its a huge plus for me!! and you can tune the car the way you want it,, so you wont wonder just how much power potential your car has that your not tapping into!! another huge plus!!
 
Lordgufi

Lordgufi

Well-Known Member
in theory you will not see a HP increase unless whoever has tuned your car left holes in the tune some where. once the car is running and its all setup if the tune was a proper tune you will see the same hp. However your ability to tune this is much quicker because of the ability to tune on the fly ( no shutting down the car changing some stuff and then reflashing and trying again ) with this you can drive the car and have a passenger adjust settings as your driving to see if something works or if it wasn't so great. all while datalogging.

The ecu is Very powerfull for the DIYer but definatly not for those who don't want to dedicate their time to setting up the car properly.

with this ecu after getting it properly set up you will see iether NO change in gas milage on the street or Better gas milage. start up is honestly the hardest part to tune. the thing i like about this ecu is the fact that you can adjust settings from a 3d map instead of having to try and visualize the curves through a table of numbers
 
Lordgufi

Lordgufi

Well-Known Member
Pinouts for installtion on 4.6 DOHC ( essentially the same as 4.6 SOHC Unless you still have the IMRC's )

img023.jpg


img025.jpg
 
Lordgufi

Lordgufi

Well-Known Member
fixed drawing errors... i had the FP relay set in drawing to where if i turned the key the pump would stay on at all times and the pin 39 ( ground signal ) wired incorrectly
 
E

ears

Well-Known Member
why do we need to do an edis mod?? i thought it was set up to work with the edis in the first place??
 
Lordgufi

Lordgufi

Well-Known Member
The Edis mod is because the 2.2 ecu is designed for a Single coil so it has to be modified for the MSnS Extra Firmware for the SAW ( timing advance signal ) command output.

There is also another mod that has to be done, thats the TIP120 transistor, the base 2222n2 transistor wont handle the current that the ford throttle valve requires for very long ( basically it would last about a min before it burned ) due to the Pulse Width Modulation that the idle valve uses.

basically i went through the trouble of doing the drawing in case we couldn't get DIYAutoTune.com to do it for us.

Additional cost for these mods would be a total of around 10 bucks
 
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