PERFORMANCE
When I ordered my Dart, I had every intention of modding it from the get-go. In fact, my car wasn't stock for even a full day of my ownership.
First up, with only 60 miles on the motor, DRP's prototype batch of his now, Ultimate Induction Intake. I specifically requested it to not be powder coated so that I could paint it myself. I prefer the stealth look when popping the hood. Update 6/13/16: I replaced this intake with a black HPSI intake to quiet things down some, and to take advantage of their ram air capabilities:
Update 7-4-14: installed the Go Fast Bits DV+ prototype diverter valve upgrade. This part fixes any leaking of the stock diverter valve by replacing the plastic internals with stiffer springs, and aluminum and brass internals with a high temp silicone face on the brass plunger.
Next up was an easy mod to do. I removed the stock rear engine mount and replaced it with a Turbo Tech solid polyurethane engine mount:
Another stealth looking mod, flat black DRP intercooler hard pipes:
Not so much of a performance mod as a sound mod, but I deleted the stock muffler and had a Y-pipe with dual 2.5" outlets installed. This is how the car should have sounded from the factory:
UPDATE 6/8/14: My other exhaust mod is the TMC catless downpipe. Coupled with the muffler delete makes this car LOUD, even when you're trying not to be. The turbine noise is several times louder now without the catalytic converter muffling the noise.
UPDATE 5/25/16: OBX copied Thermal R&D's exhaust to the T and is selling it for almost exactly half the price. I couldn't pass that offer up. To my knowledge, I'm the 2nd member on here to install it, and only missing being the first to install it by less than day, lol. I love how this exhaust sounds compared to my Catless exhaust with a simple muffler delete. The car is now much quieter, and no longer obnoxious and raspy.

WOT video:
Update 10-13-15: I had previously deleted 6 of the 8 AGS fins to drop down my IATs. I now have removed the entire AGS assembly, left the motor plugged in, and used a screw as a stop to prevent the motor's arm from over extending and tripping a CEL.

While we're on the subject on interoolers. I installed my own custom big FMIC. This reduced the IATs a little more and gave me a nice increase in power and removed the bottleneck in the intake system. Everything after the turbo is now 2.5" piping until the throttle body:
I also installed Tork's stage 1 ECU tune at the same time as I installed the intercooler. Best bang-for-the-buck mod hands down on this car:
Update 7/4/16: removed my old oil catch can setup and installed a dual Kobalt air/oil separator on the line connecting the intake manifold to the stock oil separator:

MPx front strut bar painted black:
