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FrogSTIr

The FrogSTIr is a NASA Rallysport logbooked 2004 Subaru WRX STI. The car has a stock engine stock and the following modifications:
  • full custom weld-in cage Rally America/NASA Rallysport compliant
  • GT spec equal length headers
  • Mad Dad catted divorced down pipe
  • 3" exhaust
  • Walbro fuel pump
  • 34mm turbo restrictor
  • Bimarco Grip seats with Planted seat mounts
  • FIA 6 point Sparco harnesses
  • Primitive full rally armor skid plates
  • DMS 50mm 
  • Rally innovation light bar
  • Sparco hood pins
  • Rally.build weld-on strut top reinforcement
  • Rally Armor UR mud flaps
  • Sparco 383 steering wheel with NRG short hub  and NRG 2.5 quick release 
  • Battery kill switch
  • Relocated center diff controls
  • Custom LED interior lights
  • Defi gauges
More information about the build on our Rally Car Prep page.



Performance:
0-60mph 4.6s
0-100mph 12.4s
0-130mph 24.5s 
1/4 mile 13.2@103mph 
5mph-60mph 5.8; top speed 145 
braking 70-0 166ft 

Manufacturer specs are:
Weigth: 3,263lbs
2004
STi sedan
Engine2.5L boxer DOHC 4cylinder, 16 valve
Turbocharged, high-boost, IHI Brand
Enlarged Air-Intake Hood scoop with Water-Sprayed intercooler: manually operated hood-scoop water sprayer provides additional cooling to the intercooler
Drive-by-wire throttle 
Aluminum alloy pistons
Cast iron cylinder liners
Reinforced "semi-closed deck" alloy block
Forged high-carbon steel connecting rods
Resin composite intake manifold
Electronic Drive by Wire throttle
Bore: 99.5 x 79mm, 3.92 x 3.11"
Horsepower/Torque300hp@6000 rpm, 300ft torque@4000rpm
Compression: (turbo)8.2:1, Maximum Boost 14.5psi
ValvesAVCS (Active Valve Control System) variable valve timing optimizes engine volumetric efficiency through the rev band
Sodium filled exhaust valves
Tune up specs*Plugs: Direct Ignition Iridium plugs, #NGK IFLR6B
Firing order 1-3-2-4
ignition timing at idle 17*+/- 10
idle rpm at park: 700 +/- 100
Fuel 91 octane minimum, 15.9 USG- high octane is important!
Axle Differentials: manualCenter: DCCD (Driver Controlled Center Differential) front/rear power split, 6 levels or auto mode, with indicator light
Front: "SureTrac" Limited-slip front axle
Rear: Mechanical Limited-slip rear axle
Transmission
Manual
6spd manual with transmission cooler
STi shift knob
Economy city/highway
manual: 18/24
automatic: na
Gear ratios
1st: 3.636
2nd: 2.375
3rd: 1.761
4th:1.346
5th:0.971
6th: 0.756
reverse: 3.545
Final drive ratio
manual 3.90
Brake hardwareBrembo Disc brakes
Front: 12.7" diameter, 1.2" thick, Four-piston, fixed-position calipers.
Rear: 12.3" diameter,  .8" thick, Two-piston, fixed-position calipers.
Brakes: Anti-lockSuper Sport Anti-lock Braking System (ABS), with independently controlled rear wheels.
EBD: Electronic Brake-force Distribution independently controls brake forces at each wheel, optimizing the braking ability during hard cornering, resulting in reduced understeer. EBD also provides a more precise control of braking pressure between the front and rear wheels based on the vehicle load to improve stopping distances and stability
Steering: Engine-speed controlled variable power assist, load sensing valve and variable capacity power steering pump
Quick Ratio steering 15.0:1 Rack and Pinion, 
Leather Momo STi wheel
Wheels/tires:17" BBS alloy (17x7.5jj), 5 lug, 5x100 pattern,
225/45R17 Bridgestone Potenza RE070 Summer/Directional
Offset 53mm (it's been suggested not to go under 48mm)
Available with
Gold wheels, car model code 4JI
Silver/Gray wheels, car model code 4JJ
Suspension: McPherson-type strut, 4 wheel independent, Front and rear stabilizer barsSport-tuned independent
McPherson-type inverted, alloy lower L-arms, liquid filler rear bushings, cross-member stiffener bar, front/rear 20mm sway bars
Body metal
70% body sheet metal is two-sided galvanized. Aluminum-alloy hood
Headlights4 High Intensity Discharge (HID) with smoke tinted lens. 
Manually height adjustable from inside 
Dash illumination level displays in digital trip meter


Aerodynamic side ground effectsFront corner spoiler 
STi side body colored ground effects 
Wide Flared Front Fenders and rear quarter panels 
Rear Spoiler
S - dual composite, STi
 held on with 17 screws!