The foundation for a 5.7 Swap

Thanks for the Break Down.

Your prices are very reasonable, for example, I've been questioning myself,"Do I really want to build my own MS3 box?" Sure I could save $200.00 but what if I plug it in and I fry it? So the question becomes one of 640.00 vs 455.00? How confident am I in my ability to follow directions and solder solder?

The only thing is I don't think you really need both of the megasquirt wiring harnesses. On my 06 6.1 hemi with the factory harness, the wires are REALLY long, I think they are long enough to cut the factory plugs off the end solder on the DB-37 connectors and be good. You'd need to create some kind of grommet where the harness passes through the firewall.

I think budgeting 200.00 for the wideband is a really good Idea, everything I've read about tuning says that it is a thousand times easier with a wideband sensor.

Keep looking for a cable operated throttle body, I was able to pick up a new 85mm Power Products throttle body on ebay for only a $100.00. They've been making Ford stuff for a while, there quality was questionable when they first began, but complaints have been WAY down.

As for modifying the factory throttle body, good luck. I managed to DESTROY my stock 80mm drive by wire throttle body just trying to take it apart. (100% operator error, FYI there is a roll bin that holds the throttle shaft in place, remove the butterfly, knock out the roll pin and the whole thing comes apart, otherwise you'll break the gears and motor trying to take it apart.)

The key problem with modifying the stock one is that you need to figure out not just how to attache the cable and make sure the return spring is strong enough, but you all need to figure out how to adapt a TPS and maybe some type of Idle air control.

If your REALLY ambitious you could buy a used Nissan 90mm throttle body off of ebay, I see them all the time for right around $100.00. You'd have to machine your own adapter plate to mount it to the Hemi intake. I made my own adapter plate for the Power Throttle Body. See attached photos.


Coil Drivers are an issue. I was going to go with 8 BIP373 and make my own spark box. I know that Bosch 211 coil drivers are pretty cool drivers but they are over 100.00 dollars each. OUCH, using 8 BIP373 are less than 100.00 total. But the Bosch 211 coil drivers are very clean and would be very easy to install and use. Let me know how your search goes, they could end up in your tool box, by accident. :angel4:

I don't think you need the MAP, Megasquirt comes with a MAP sensor, you simply need to run a vacuum line from the manifold to the box.

Best of Luck,

Regards,

Joe Dokes