Paul K is a local enthusiast out of Campbell, Ca and he visited Z Car Garage for basic performance upgrades on his 2011 Nismo 370z:

 

We are huge fans of the 1990-1996 Nissan 300ZX and this “Stillen GTZ” example is a unicorn among Z32s. In the early 90’s the GTZ was a limited run, special edition 300ZX Twin Turbo produced by Steve Millen Sportparts Inc. Only 6 GTZs were built in the series, and our client Mike B owns #6 finished in Diamond Black Pearl Metallic. Z Car Garage performed a mechanical refresh with dyno tuning to get it back in fighting form.

 

From Z to Super Z, by Stillen

Photo by Ryan Brackin

Steve Millen took Nissan’s World Class Sports Car and transformed it into the GTZ. Suspension, engine, transmission and aerodynamic upgrades used in developing this special 300ZX Twin Turbo could be found in Stillen’s performance catalog:

 

GTZ-specific parts included 17″ Billet Wheels…designed by Steve Millen and Elite wheels allowing 275mm-width tires:

 

Aerodynamics package highlights included the LeMans-inspired GTZ Rear Wing and GTZ turbo front spoiler that directed air into side-mounted intercoolers. Also shown are the vented front/rear fenders and louvered front panel:

 

Optional GTZ single tip exhaust system, fitting through GTZ Rear Valance opening. Performance upgrades included Brembo front brake calipers, EVC boost controller, HKS Boost and exhaust gas temp gauges. Catalog scans courtesy of Z32 enthusiast Jay S:

 

The GTZ received accolades from the press, with an orange example gracing the cover of  Road & Track Magazine. Their April 1991 issue featured and extensive review of the car:

“It’s and absolute carnival ride to tip into the throttle, hear those twin turbos spool up and hang on as the GTZ reels in the horizon…a tractable, smooth road car that performs, handles and feels like a race car”

 

Motorweek put the Stillen GTZ up against a tuned Mazda RX-7 of the same area in their wonderful road test video, you can see it HERE. The GTZ is not to be confiused with the SMZ which was a special edition of the 300ZX that was produced in collaboration with Nissan to celebrate 25 years of the Z car.

Mike’s Z32 Story

 

Before we get into the mechaincal work let’s hear from Mike and how he acquired his 1991 Stillen GTZ…

 

Z Car Garage has been supporting the Nissan/Infiniti Z and G-series sports cars since 2004. At just about any time during the day at our shop you can spot a 350Z, 370Z or G37 undergoing routine maintenance or performance upgrades. Many of our late-model Z car clients are referrals and we are happy to oblige when scheduling allows. We met Frank M in 2020 when he had us perform clutch work on his 370Z. The install went super smooth, and Frank and Rob began their relationship.

“I first heard about The Z car garage through another Z car enthusiast, he had nothing but great things to say about the service he had received working with the crew there. I reached out the Rob to have my 370Z’s clutch replaced with the Z-Speed CMAK clutch kit. That was the first job you all did for me.”

A common issue on the 370Z is the internal slave failing due to heat. Thankfully Z Speed Performance makes a kit to convert the internal slave to external (CMAK Upgrade). We installed their Stage 1 Clutch kit on Frank’s Z:

   

On his next visit to ZCG, Frank had us perform an alignment after suspension work including Eibach Pro-kit lowering springs (KW-V3 coil-overs next) and Hotchkis front and rear sway bars and SPC rear adjustable camber arms. We also replaced the rear diff bushings with new Whiteline parts.

 

Frank is a handy guy and he’s done much of the work on his Z himself. For something that is beyond the scope of a simple weekend project he brings it to ZCG. In summer 2022, with 77k miles Frank installed an oil pressure gauge (VLS) and didn’t like the levels it was reading. There is a very common issue on the VQ37HR where  oil gallery gaskets fail, resulting in low-oil pressure to front of the engine.

 

CPZ makes updated gallery gasket with really nice hardware. At the same time to help with oil cooling we installed the CPZ 25-row oil cooler with a thermostatically-controlled Setrab unit:

 

Wheels Make the Car

Mark has great taste in wheels, choosing a set of Work Racing CR2Pwith Michelin Pilot Sport 4s tires 265/35 and 305/30 rears:

 

We spent time with the 2023 Nissan Z back in June and Frank was kind enough to lend us his WORK wheels to test fit on the RZ34:

 

Frank purchased his 370Z bone stock, being the second owner and has added the following mods:

Drive train 

Fast Intentions stainless steel CBE exhaust

Stop Tech front and rear vented drilled and slotted zinc coated rotors

Stop Tech carbon ceramic pads front and rear

Stillen CARB legal cold air intakes

VLS oil pressure gauge

Aesthetics

Custom retrofitted headlights by me honey comb projector lens. Blue demon eye. Black and gunmetal paint job plus new Morimoto clear lenses.

Evo-R carbon fang cover,carbon type three front lip, carbon upper bumper cover, pearl white base carbon top high wing and CF door handles

Fujimura rear lower diffuser

Enjoying The Ride

You can catch Frank carving up the Bay Area backroads like HWY 9 runs up to Skyline and Alice’s:

 

Frank is stoked with his Z car:

“The performance gains from the work Z Car Garage performed was great. The clutch feel is much improved and does not slip it also seems to shift smoother. The oil pressure is up 15 pounds at idle from the oil gallery gaskets and the car runs much cooler after the oil cooler install. I think the cooler temps help the car not heat soak on hot days while pushing it on back roads. The best thing about the Z car Garage is when I leave my car there for service, I never worry about it being there. I know the car is taken care of as if Rob owned it himself. I have nothing but good thing to say about you all. I do a lot of work on the car myself but Z Car Garage is the only shop I will use if I need the help.”

 

Thanks for your support Frank it was pleasure working with you and seeing enjoy your Z. See more photos in the gallery below, and contact us to schedule an appointment for dyno tuning, maintenance or upgrades on your 370Z or Infiniti sports car!

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Brad L is the original owner of this 2008 Nismo 350z #1188. He generally uses this Z for fun road trips and wanted a little more power so we installed a Stillen supercharger kit last year. Brad recently visited Z Car Garage for routine maintenance and we spent some time admiring the details Nissan added to this rare Z33. Enjoy the photos!

When the Nismo Z33 made its debut 15(!) years ago its aero package was considered downright shocking. We think it has aged well, from the aggressive front fascia and side skirts to that unmistakable SuperGT-inspired rear spoiler/diffuser.

Brembo brakes, and super-sexy NISMO forged wheels still make our mouths water:

The interior also reminds you that this is a special Z with red-accented seats, NISMO white and gray tach, and a serialized NISMO-etched aluminum plaque:

 

With roughly 1,600 units produced for 2007-2008 the Nismo 350Z is quite rare. We still love them. How rad would it be if Nissan offered a Nismo model of the new Z?

 

Sean M visited Z Car Garage for dyno tuning on his 2010 Nismo 370Z. We specialize in UPREV and EcuTek Tuning to maximize power gains from individual modifications like intake and exhaust upgrades. Let’s hear how Sean found his Pearl White V1 Nismo Z34:

“I obtained this car through my father’s best friend. A couple of years ago, I found this car on craigslist and I wanted to jump on it very badly. I had just gotten a car six months before, so I couldn’t get it and knew it was going to be gone within the next couple of days. Sure enough, that’s what happened. I showed up at the Thunder Hill 3-Mile course that weekend, and spotted the car parked next to our trailer when we arrived. It turns out my father’s best friend bought the car, and from that moment I told him that if he ever wants to sell it, I want to buy it from him. About a year and a half later, thats what happened!”

 

Once he got the car Sean started modifying it immediately with Stillen G3 intakes, Z1 headers, Magnaflow cat-back, Z1 motorsports 34 row oil cooler, Z1 clutch, KW V3 Coilovers, Hawk DTC60 pads, and AEM Oil pressure and wideband AFR gauges.

“After installing those parts, I knew it was going to need a tune. Thats when I found the man the myth the legend Rob at Z Car Garage! I found them online looking for Z tuners in the bay, and after coming into Z Car Garage I knew I brought it to the right place. Rob got the car squared away with the UPREV ARC license, and with his knowledge about how hard the car gets driven he dialed it in.”

Dyno Tuning

 

We specialize in UPREV and EcuTek Tuning to maximize power gains from individual modifications like intake and exhaust upgrades on Sean’s Z. On the dyno, Rob UPREV tuned with gains throughout the rev range. Peak gains of 20hp/20tq for a total of 335hp/272tq at the wheels was achieved:

 

Enjoy this dyno video that Sean filmed:

Sean was stoked on the dyno results:

“Being a huge racer himself, he knows what it takes to keep a car maintained and up to date, and the motor running safely and efficiently. Z Car Garage is always my recommendation to fellow Z enthusiasts, as I know Rob is a wealth of useful information as well as a brilliant mechanic. After the tune, the car has fantastic throttle response on partial throttle and tons of top end!”

 

We also added the ARC (Advanced Racing Controls) license. This add-on service to the existing UPREV Flash allows you to have adjustable launch control, burnout mode, and flat-foot shifting. This is for cars with manual transmission, VDC/cruise control. Call Rob for more details and to schedule your Z/G tuning appointment.

Here is a video of the exhaust and launch control (courtesy of the UPREV ARC License):

 

Enjoying The Ride

 

Sean is an avid driving enthusiast and this Z sees the track 2+ weekends per month, running strong each and every time. It is a car that gets driven close to its limit, and is often featured on Sean’s YouTube Channel, Milburn Motorsports. You can also catch Sean and his racing adventures on Instagram.

 

Rob had a great time with Sean:

“We met Sean through tuning his car. He’s an awesome young man and even brought some of his friends (some we’ve also worked with) with him to the shop. It’s good to see passionate, enthusiastic young people in motorsports.  Whenever Sean is here we talk about his Z car and how much he enjoys it and how we both enjoy driving. He’s got a really cool YouTube channel that we subscribe to and he’s an excellent racetrack driver.”

Thanks for your support Sean, Long Live The Z!

 

Contact us for tuning!

Z Car Garage offers the ARC (Advanced Racing Controls) license. This add-on service to the existing UPREV Flash allows you to have adjustable launch control, burnout mode, and flat-foot shifting. This is for cars with manual transmission, VDC/cruise control. Call Rob for more details and to schedule your Z/G tuning appointment.