Baker Tuning: 2009 370Z with GTM Stage 2 TT Turn Key

DIGItonium

Hardware

• GTM Stage 2 TT Turn Key Kit with Black MAF Tubes
• GTM HD Oil Cooler
• Fast Intentions HFC
• Southbend DXD Stage 4 Clutch and Flywheel
• ZSpeed CSC
• SPC Rear Camber Kit
• Depo 60mm Gauges (Boost, Oil Pressure, and Oil Temperature)

Results and Observations

• Car feels stock. Most of the time I forget this car is turbocharged! Boost kicks in with close to 50% throttle, and the turbo spools up quick. What's interesting is keeping throttle steady at 3k RPM in 3rd to observe the boost level at 0 PSI, then quickly tapping down to about 50% to see the surge to maximum boost (5-6 PSI). Boost builds up faster than our throttle response
• It is very easy to control and modulate the throttle as if power is "on demand."
• Very little lag from the turbos, and power comes on very smooth.
• Some throttle lag remain, but possibly stock throttle map.
• After 10 hour drive from Houston back to Wichita with outside temps ranging 77-84F, oil temps hover around 205-210F (215F peak). With A/C running, oil temps remain stable around 205F.
• Water temps stable at the 7th tick, which is the same from the start after warming up.
• BOV is very subtle. It hisses instead of whistles. I sort of wish it was a bit louder because it sound so sweet.
• Turbo + F.I. TDX + F.I. HFC = AMAZING sound. It is quieter, deeper, and NO rasp with a touch of lopey idle which reminds me of a Mustang V8 idling (not as deep and hollow as the V8, of course). The exhaust begins to drone during the 10 hour drive with nearly similar loudness when stock without the HFC. However, it is much quieter in city driving. The engine sound is a tad different, and there's a hint of VG sound or pitch that's hard to describe. Overall sound and loudness improved tremendously! Must hear it in person to believe it.
• Southbend clutch and ZSpeed CSC is very good. Pedal effort is heavier, but feels like the 350Z. There is some chatter in 1st, which I can forgive knowing it's not exhaust rattle.
• Bumper repair looks great! Due to time limitations, the rear emblem is still stock. Will order matching black pearl soon.
• CF vinyl wrapped splash guards look great! Thanks to Greg at Underground Graphics.

Thanks to Paul for coordinating this effort (and photos), and Jason for the amazing installation work.

Fuel Economy Estimates

• N/A Combined (daily driven, work week): 21.7
• TT Highway (drive home from Houston): 24.4
• TT Combined (average): 24.7, 21.5, 19.6, 21.9
• TT Combined (NO ETHANOL): 22.0
• TT Combined (test pipes): 23.5

Dyno
Outside temps around 85F. With a hot motor, the first couple of pulls resulted in 380s whp. After a brief cool down, the third pull resulted in 400 whp. Average boost was around 6.3 PSI. AFRs are good with headroom for a little more boost down the road.


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Video

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