TUN996TTGT800 - Evolution Motorsports GT800

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Part #: TUN996TTGT800
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All Fitments

Year Model SubModel Cylinders Liter Aspiration Eng Desg. Fuel Notes
2000 - 2004 911 GT2

Product Description

The Evolution Motorsports GT800 was 100% ground up designed, engineered and manufactured in house. The concept for this power upgrade was to build a safe and reliable power upgrade that would maximize the potential of the flat 6-996TT engine. Some of the known hurdles were to strengthen the internal engine components, deliver enough fuel, air and software calibration to balance the system. The end result offers an extreme power level while maintaining excellent longevity and reliability under some of the harshest conditions. Our company GT800 has made its mark on the Porsche tuning world and is often looked at as a benchmark of performance that most would dream of achieving.


  • EVO Modified Garrett GT800 High Flow turbochargers
  • Upgraded high pressure wastegates
  • CNC machined billet aluminum wastegate mounts
  • EVO Billet Diverter Valves
  • EVO Proprietary /GIAC GT800 Software
  • EVO Race / Sport Stainless Steel Exhaust w/ 100 Cell Catalysts
  • EVO V-Flow Air Induction System
  • EVO 44.5 mm Primary Tube Stainless Steel Headers
  • EVO / Sachs Stage 3 Clutch (Can use with Dual Mass Flywheel)
  • EVO Silicone Boost Hose Conversion w/ Diverter Valve “F” Hose
  • EVO 70MM High Flow Turbo Air Inlet Ducts (Plastic)
  • EVO Braided and Fire Jacketed Fuel Line Upgrade Kit w/ Fuel Filter Kit, Adapters, Clips
  • EVO Modified Fuel Rails
  • EVO Fuel Pump Upgrade: external pump, lines, regulator, etc
  • EVO High Flow Fuel Injectors
  • EVO Clubsport Intercooler Upgrade
  • Bosch Large Bore Bosch Throttle Body
  • EVO CNC Machined Throttle Body Adapters w/ Venturi
  • EVO Custom Fabricated 68MM Diameter “Y” Pipe
  • NGK Spark Plugs
  • EVO GT800 Floor Mats


  • Complete disassembly of engine down to the crank
  • Inspect, size, spec out all parts including: crankshaft, pistons, valves, guides, cams, springs, etc.
  • Inspect for unusual wear, measure all wear components to determine if they are within specifications and address any problems
  • Sonic clean components and prep for reinstallation
  • Inspect valve train and reseat valves with hand lapping method
  • Install new GT3R racing high flow oil pump
  • Install new crankshaft, intermediate, rod and main bearings Install new Carrillo Connecting Rods w/ multi torque rod bolts (carr bolts)
  • Install new high strength aircraft quality head studs / hardware
  • Install EVO designed high pressure head gaskets
  • Install and gap new piston rings
  • Install new OEM o-rings, seals and associated gaskets
  • Build bottom utilizing OEM & EVO developed high power building procedures
  • Time camshafts utilizing OEM timing tools
  • Install all associated induction / top end components with all new gaskets and seals
  • Secure and zip tie all vacuum / pressure lines as required for high power applications

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