Garage99

Displacement is fun. Big turbos are fun. AWD is fun.
Displacement + big turbo + AWD = FUN.


The basics:

• AEM EMS Series 2
• Stock 6G72 3.0L block with forged internals
• Ported stock heads
• Brian Crower 280 cams
• Borg-Warner S400SX3 turbo
• custom manifolds, exhaust, intake, intercooler, and throttle body
• RC 1200cc injectors
• Aeromotive FPR
• E85 fuel
• HKS DLI
• Blitz Dual-SBC Spec-R boost controller
• only 23-24psi… for now

There were no mechanical issues with this car at all, which is always welcome.

Considering the size of the turbo, boost came on at a very reasonable RPM… thanks in part to a device that makes the turbine inlet smaller at low boost levels. Once the turbo was spooled, the boost level was controlled *perfectly* by the Blitz EBC. As the boost was turned up, the car responded very well and power levels continued to rise. Minimal changes in fueling were needed for the additional airflow, thanks in part to the boost compensation mapping in the AEM EMS.

The results:
574.9 hp @ 7500rpm and 477.5 ft-lbs @ 5250rpm

This car is always a blast to tune. Good choice of parts, NO mechanical issues, and it revs to what seems like infinity.

The last time around, this car put down an impressive 445whp on the heartbreaker dyno. Rumor has it that, at the old power level, a “650whp” Viper didn’t stand a chance. Of course, the owner wanted even more power, so he added some cams to the mix this time. While the car had some downtime, the owner took a quick look at the bearings to make sure things were good… he was happy to report that everything looked immaculate. You just can’t be too careful when you’re regularly winding things out to 9k RPM and the car is putting down over THREE TIMES the stock wheel horsepower.

The parts:

• TiAL GT35R
• TiAL 44mm wastegate
• TiAL BOV
• Hondata engine management
• stock-sleeved B18C1 bored 81.5mm
• JE Pistons
• Golden Eagle blockguard
• Manley rods
• Honda OEM bearings
• Micro-polished crank
• B16 head
• Kelford stage 2 turbo race cams
• Supertech valves and springs
• ARP head studs and hardware
• Type-R oil pump
• MSD ignition system
• Edelbrock intake
• 70mm throttle body
• Aeromotive FPR
• Quiafe LSD
• Exedy twin-disc clutch

The results:
Pump gas: 374.8 hp @ 8000rpm and 264.2 ft-lbs @ 6250rpm
Race gas: 470.6 hp @ 8250rpm and 372.2 ft-lbs @ 7000rpm


Race gas and pump gas comparison:



Pump gas tune, as compared to our baseline stock ’06 STi:



Race gas tune, as compared to our baseline stock ’06 STi: