This is my attempt at making my first post a useful one
so let's get down to business:
1- Stillen Gen 3 Cold air intake:
Pros: awesome gains across the band, sexy growl, imo: best (reasonably priced) $/hp upgrade for the G37
Cons: A real Pain to install if doing it urself... otherwise, nothing else
2- Stillen Grounding kit:
I would like to talk a bit more about this upgrade since I previously owned a 2008 (5-spd) G37 before my current 2009 (7-speed) G37 and one of the things I disliked was the lag in shift time response. Of course, I'm not expecting GT-R spec shift times, but there was a noticeable lag which was more like a hesitance as the car tries to select the 'optimal' gear.
In short: the ground kit basically made it feel like a new car to me.
No more 'wait for the car to make up it's mind' moments as my foot steps down on the aluminum gas pedal..
No more 'hit the paddle shifts ~500rpm earlier in anticipation for the upcoming gear upshift..
so for those of you who share my problem, I highly recommend the ground kit solution!
Stillen Ground Kit:
Stillen Gen 3 Cold-Air Intake:
Dyno after intake + ground kit (everything else is stock):
Comparison: stock vs. intake:
Air- fuel ratio after install: