Basically, the Mustang gets embarrassed and the video is edited humorously to reflect that. The Mustang probably has bolt on modifications but this race is over before it begins. There is a rundown of the modifications to the M3 below the video to give some context to the result. It puts down 640 to the wheels on a Mustang Dyno and with a curb weight around ~650 pounds lighter than the GT500, it makes for a fast car:
86.4mm bore and 89.6mm stroke
Eagle Hbeam rods, ARP Rod studs.
JE custom turbo pistons and rings
ARP crankshaft main bearing studs
ARP S54 12mm head studs, torqued to 100ft/lbs
Cylinder head Oringed with stainless wire
Radius exhaust seats, proprietary intake seat cut, small amount of smoothing to combustion chamber, small amount of casting smoothing to runners
666fabrications 10g stainless tubular T4 non split tanginal turbo manifold
Precision turbo's PT67 T4 turbo with compressor race housing, .63 AR hot side
4" intake to turbo behind passenger fog lamp.
3" charge piping
32x12x4" thick core intercooler.
4" 304 stainless 14G exhaust, 2 magnaflow mufflers (straight thru mufflers) near the transmission, Vibrant 4" street muffler at the bumper. (its QUIET for 4" exhaust. No turbo whine)
46mm Precision Turbo recirculated wastegate back into exhaust
HKS SSQV sequential blow off valve
S50 intake swap
The entire fuel system is plumbed with Earl's Prolite 350 hose and Earls ano-tuff fittings.
Weldon 2025 fuel pump
Weldon 14000 fuel pump controller with boost activated switch @ 2 psi of boost.
Weldon pre filter (40 micron) post filter (10 micron) located in spare tire wheel well. Spare tire still fits.
-10 line from the tank to the pump, -8 to the fuel rail
-10 fuel rail custom made with $#@!in' billet mounts
2000cc Injector Dynamics fuel injectors
13101 Aeromotive fuel pressure reguator.
fuel pressure regulator is 1:1 ratio with vacuum/boost.
AEM 30-1902U stand alone. The cable for interface is in the glovebox. It's attached to my serial port gage in the center console.
AEM pro software included.
RB racing turbo drain/scavenging pump plumbed with -10 line
RB racing turbo drain pump timer
Polyurethane engine mounts
S54 engine cooler and oil filter housing assembly.
Dual SPAL fans, one is run by the ECU, the other by a low temp switch
TWS 10-60 castrol oil, changed 12/12. Additional oil change comes with the car.
New set of ignition coils last dyno session.
Factory 5 speed
Clutchmasters FX700 twin disc sintered bronze clutch.
Redline shockproof oil changed 8/12
SFI approved scatter shield blanket around the bellhousing
UUC ultimate short shift kit with UUC weighted shifter.