’03 & ’04 Cobra Supercharger Options (M-112):

Horsepower

Price
Blower Rebuild Services
Complete Supercharger Rebuild includes coated rotors $1,295
Front-Drive Rebuild Only (Only $295 at time of porting) $495
Blower Porting Stages
Stage 7 – Blower, TB & Plenum +50 HP $1,095
Stage 8 – Blower, TB & Large Plenum +65 HP $1,295
Stage 9 TB and Extra large Plenum +100 HP $1,495
           add stock 65 BBK Throttle Body 1050 CFM +115 HP $475
           add ported 65 BBK Throttle Body 1250 CFM +125 HP $625
Blower Porting Only +40 HP $995
Options
Venom Cooler $500
Even Flo Injector High-Flow Resizing: 50-70#, Easy Tuning $250
90mm MAF Update for Easy Tuning $75
Install Custom Constrictor Grip Pulley + Machining $275
M122 Hybrid Large Rotor Option (customer provided core) Read More… $1,400
Lower Intake Porting 15+ HP $275
NGK 7317 TR8 – Spark Plugs $55

_

stiegemeier          

Stage 7:           475-500 RWHP  12-14# Boost
Pump Gas

  • Supercharger, Plenum, OEM Throttle Body
  • Original 500 RWHP design
  • Requirements:

Stage 8:  550-600 RWHP  16-18# Boost
Octane Boost

  • Supercharger, Plenum, OEM Throttle Body
  • 2018 porting design; blower case & plenum
  • Requirements:
    • 93 octane; 18-21° spark advance
    • Octane boost recommended for racing; 23° spark advance
    • Low-temperature thermostat
    • TR8 Spark Plugs – 032 gap
    • High flow pumps & check valve delete
    • Even Flow 50-60# Injector Service
    • Crank Case Breather
    • 1.75″ Headers
    • Larger MAF
    • Larger Straight Shoot CAI

Stage 8 + Larger Throttle Body:  550-600 RWHP  16-18# Boost
Race Gas

  • Requirements:
    • Venom Cooler
    • High Octane or Ethanol Blend; 23-26° spark advance
    • Low-temperature thermostat
    • TR8 Spark Plugs – 032 gap
    • High flow pumps & check valve delete
    • Even Flow 50-70# Injector Service
    • Crank Case Breathers
    • 1.875″ Headers
    • Larger MAF
    • Larger Straight Shoot CAI

          Rebuild & Porting Service: Up To 15% Discount When Combined