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 Supra arrived in need of some help. For the most part, the car was mechanically sound, but there were a few loose ends to tie up. Once those issues were addressed, I took at peek at what was going on in the car’s AEM EMS.  From the first glance, it was obvious that the tune was pretty haggard… there would be lots of work to do.


The parts:

• Garrett GT42 turbo
• AEM EMS
• 1680cc injectors
• fully built motor
• HKS 272 cams

The results:
After correcting the basic parameters within the AEM EMS, the car behaved beautifully. Once the car was running nice and strong at the wastegate level, I started to turn up the boost and the power output just kept on rising. Somewhere north of 25psi, there was a hint of a miss at high RPM, so we decided to take a look at the spark plugs. The plugs Jan removed from the car did look a bit old, so he replaced them with new ones that he had in stock. This alone resulted in a gain of 30whp.


730.6 hp @ 8250rpm and 532.5 ft-lbs @ 6750rpm

As compared to our “measuring stick” stock ’06 STi: