Garage99

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:

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: