Stillen supercharger month continues at Z Car Garage! Last week we featured Daly’s G37 sedan and today we bring you David G’s 2009 G37 coupe. With 57k miles on the clock David wanted to go forced-induction on his G37 with Stillen’s CARB-legal kit.  As with all builds, each customer gets a dedicated rack for parts:

 

We also installed a  JWT HD clutch/flywheel, Z-Speed T/O bearing and 19-row oil cooler:

 

For added peace of mind we also performed full 60k services. Here are a few in-progress pictures:

 

On the dyno, the Stillen-provided CAN tune put down 406hp/309tq to the wheels. Rob’s tuning further improved hp and tq throughout the entire rev range for total of 433hp/325tq!

 

With an improvement of +137hp/69tq over stock David is trying to keep his smile under control. Enjoy the Boost!

 

June felt like Stillen Supercharger month at the shop. Since Stillen has made significant changes to their kit including the use of a Vortech blower, this is now a very popular choice for great power gains and CARB-friendliness. Naturally, Z/G enthusiasts are lining up to enjoy some boost!

We have three Stillen S/C builds to report. Let’s start with Daly C’s  2009 G37 Sedan. You might notice that the kit still uses the pretty “Stillen” cast intake manifold with dual throttle bodies on one side:

 

Here are a few in-progress pics of the install. Daly has GTM oil and tranny coolers and GTR one-step colder spark plugs:

 

While the G was here we gave Daly a full 30k service for peace of mind and upgraded Stoptech brake pads. The before/after:

 

So how does the Stillen kit perform? With the baseline CAN tune from Stillen, it produced 373hp/282tq to the wheels. This is an improvement of 89hp/40tq with most of the gains only noticeable after 4krpm:

 

Rob’s tuning however, turns Daly’s G into a different beast now making 414hp/317tq to the wheels. This is a significant peak increase of 38hp/35tq to the wheels over the base tune! More importantly, the gains are available throughout the entire rev range. Lots of area under the curve to enjoy!

 

It’s always gratifying to see total gains above baseline, so here is what the +130hp/75tq improvement looks like:

 

Daly we love your sleeper G37 sedan. Tune in next week for the second Stillen build!

 

Jaques G was referred to Z Car Garage his co-workers at Apple. Last month he visited us for suspension/wheels and came back for Stillen intakes and an UPREV tune. Handling was improved with a few common upgrades like stiffer Eibach springs, Hotchkis sway bars and SPC control arms to keep alignment in check:

 

A nice braking upgrade is the OEM G37 S caliper setup. We installed these Akebono units on Stoptech rotors all around:

 

Front OEM vs big calipers:

 

Absolutely beautiful 19″  WedsSport SA55M wheels encase the calipers well.

 

These wheels are finished in matte grey have a more concave face for the rear…very handsome additions to the G.

 

Jacques wanted a little more power so we installed Stillen intakes followed by UPREV tuning.

 

The intake alone was good for +10hp but no significant gain in peak tq. Note, however nice gains in low and high rev ranges. UPREV tuning yielded an additional 4hp/6tq for total of 298hp/240tq to the wheels. Shown below are the gains from baseline to intake to UPREV:

 

 
Finally, the G was up for smog and it passed with flying colors. Jaques’ G37 is now a sharp looking corner-carver!

ZCarGarage has plenty of upcoming project updates to share with you so keep checking the blog! Here is Rob with a report on a sleek, twin-turbocharged Infiniti G37 coupe:

Matt and Josiah are cousins in a family filled with Nissans and Infinitis.  Matt had owned lots of American muscle  cars and bought the G37 since it had a great combination of performance yet refined ride and style. The power wasn’t enough though…we have all been there! Matt and Josiah came to ZCG to meet with me and discuss options for increasing the G’s output. We came up with a plan consisting of a GTM Twin Turbo Kit (Stage 2) to make sure we had room to grow should the need arise.

The kit installation was smooth and GTM really makes a high quality package. Note the heat shields that hide the exhaust manifolds and the large front mount intercooler that fits beautifully behind the factory bumper:

With the kit installed, the engine bay appears almost stock with only the polished intake pipes deviating from the tame look . There isn’t much to indicate the magnitude of force-fed power that is now being produced 🙂 On the ZCG dyno the Stage 2 kit turned the rollers to the tune of 428rwhp/369tq!

To keep the newfound power “under the radar” we mounted the Defi link gauge setup in the sunglass holder and out of plain sight:

The G37 is now an entirely different machine with the added power and torque and we know that Matt is enjoying his new Japanese super coupe!

You can see more pictures of the build below:
…[read more]

Infiniti has finally wised up and realized that to really compete with the BMW 3-series that they needed to make a convertible of the popular G37 coupe.  This model will have all the same features of the standard G37 with the addition (or subtraction depending on how you look at it) of a retractible hard top.

The new convertible will be available sometime in early spring and pre-orders are being taken as I write this.  If this is your must have car I suggest getting your name in early if you don’t want to wait like the 335i owners had to.   Good luck!