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S550 S16 Mustang Build Thread Profile - S550 Mustangs


That’s the best I have.

Bumper beam is through drilled for front support rods. Used existing holes in the sides for the side support rods.

I’m still using fender liners and getting the three push pins per side out is the most time consuming part of removing the splitter. Frustrating if on the ground. Easy peasy if front wheels off. Would be easy without fender liners as well.

Bumper does not need to be removed to pull splitter off.
Hey thanks Hristofor.

Been slowly chipping away at the wiring/programming issues the last few months with our local dealership. Took it to the dealership hoping it was they were programming issues that could be easily resolved with IDS. That wasn't the case for the most part so I took it back and worked through many little issues. Steering rack and ABS weren't coming online, so got those working. turn signals and headlights were not working, got those re-pinned and operational. Communication issues between several modules got those resolved. Good news is I hope I’m not wrong in saying that we’ve got it all sorted out now save for the anti theft system preventing cranking. I'm waiting on a second keyfob and then it goes back to the dealer for them to blank the PCM and re-program it as if its a brand new one. The PCM controls the anti theft system (PATS) so this should fix it. If that doesn't work I found one guy in Florida who was also dumb enough to undertake this swap using all OEM wiring and he had the same PATS issues. For him programming a new PCM did the trick. So if blanking my PCM doesn't do it we'll grab a new PCM and program it. Good news is they're in stock if we need one.

Also been tinkering with some other items in between. Trunk is less solid than I’d prefer with the wing on it so I cut these blocks real quick to see if they would help. With no interior those trunk bumpers were floating in air. The blocks work so I think I’ll fab up a permanent solution.

Finally put my apex EC7’s on.

With any luck I’ll have this wrapped up this month ready for some track days! Gonna be a whole new car to drive. Wing, NT01’s, and a v8.
Last edited:
Exp. Type
Time Attack
Exp. Level
Under 3 Years
With any luck I’ll have this wrapped up this month ready for some track days! Gonna be a whole new car to drive. Wing, NT01’s, and a v8.
Thanks for the detailed response I was curious about the swap as we were just discussing yesterday in our local mustang club what is needed and run into your posts sounds like a lot more work than I though it would be but I'm glad that you are making great progress sure you will sort out the PCM issues. Can't way for your first track day with the new car it sure will be amazing. Good luck and keep us posted !
Yeah in theory the swap electronics are not that difficult if you get ALL the important modules from the engine donor vehicle. I thought I had done that with the PCM, BCM, Keyfob Antennas, accelerator pedal, clutch and brake pedals and sensors, steering column with associated modules and all wiring. Turns out the ABS also stores the vehicle VIN and the instrument cluster and FCIM (dash button module with start button, traction control, etc) also have vehicle identifiers that many modules check for. The steering rack and ABS firmware also changed throughout the years and based on vehicle options, etc. So there are many modules that all talk on 3-5 separate Canbus networks and if there are enough mismatches in expected/received information between them it can render some modules/functions inoperable or trigger some modules to think there is theft and they lock up.

So it turns out that while in theory, theory and practice are identical, in practice they are not.
Working on mounting and plumbing this 948 oil cooler.

Sticky foam on the back to seal it to the radiator:

Mounted. Can move it over to the right and bolt it together with a small 9 series cooler with fitting pointing the other way for trans cooling if needed.

Sandwich plate. The -12 fitting are quite large.

And another item I’ve had on my list for a while is these strut slot fillers. The MCS coilovers have huge slots and the bolts have not slipped yet but I don’t want to risk it.

Waiting on magneride delete modules so hopefully the car will go over 80MPH once the oil cooler and ducting are done.

Sonoma on 2/5, so excited.

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