350Z\G35 (Z33 & V35) |

Archives for : 350Z\G35 (Z33 & V35)

Update your 350Z’s and G35 Coupe’s Fuel System!

Posted by : Sebastian Chacoff On : July 5, 2026

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If you’ve upgraded your 2003-2008 350Z to a return fuel system because you’ve added forced induction and have been left feeling out with the advancements to the 370Z\G37 upgrade offerings, cry no longer! As a shop having to work around the factory fuel pump assembly on the Z33, it makes it difficult to use a Walbro 450 series fuel pump in the factory assembly. What’s worse is the fuel pump outlet grommets fail\blow out and this can lead to fuel pressure drop, leaving you stranded, or worse a blown motor from running too lean. You’re also left “stuck” running the built in paper fuel filter that by now is ages old, dirty, and unreplaceable unless you buy a new assembly.

Say goodbye to this troublesome grommet that installs on the fuel pump outlet and inlet of the 350Z FP assembly

Thanks to the new CJM Z34 retro fit hose, you can now run a 370Z style fuel system that has an external fuel filter (Aeromotive Micro Glass) and the new line you run will serve as the main feed line to the engine and the original factory line will serve as the return. We’ve been able to adapt a 370Z CJM S1 RFS to the 350Z with the addition of two AN fittings that go between the first feed line coming off the pump side and fuel filter. Our forced induction flex fuel kit can be incorporated in this portion of the line or up closer to the engine in either the feed or return side to best fit your application. To mount the fuel filter from the 370Z kit we drilled and tapped 6mx1.0 threads into the body to use the CJM bracket which was a breeze to do with the proper tools. The CJM 4-way fuel tap that is included with the RFS was installed on the passenger side of the factory fuel rail. The other part that we have not talked about it is the ability to run the CJM Billet Hat, we install these mandatory, we find that the factory plastic top hats do not allow for adequate fuel pump gauge wiring and the plastic is flimsy and breaks from the metal posts.

You will need to source a 2009+ genuine Nissan\Aisin G37 fuel pump assembly (part number 17040-1NC0C) so that it fits your 350Z fuel tank. Aftermarket fuel pump assemblies will NOT work, the molded plastic housings are different. Since the assmebly will me modified extensively, you can source a good used assembly. A new assembly would techincally be a waste since the fuel filter housing will be cut to make the Walbro 450 series fuel pump to fit. We have videos on our YouTube channel on how to do this all. We stock all of the parts above and have links to the products on our site. We also provide installation services, so you can have us perform the work at our shop on the vehicle or you can also ship us your assembly for modification and ship back to you.

The hose and it’s adapter that make it possible

David’s 2007 350Z

Posted by : Sebastian Chacoff On : January 28, 2014

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Excuse the terrible quality of the photo!

David’s 350Z came in for a tune with your basic bolt-ons such as a cold air intake, test pipes, and cat back. We don’t typically blog on “common” dyno tunes but the results of David’s tune were impressive for the VQ35HR engine.

We didn’t complete the baseline pull because of how far off the AFRs were (blue run). At 4500 RPMs we picked up 9 whp and 11 torque. An impressive 297 whp on 91 octane. Running with the 370Zs in terms of peak power made.

Masis’s Built NA 350Z

Posted by : Sebastian Chacoff On : December 6, 2013

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Masis dropped by with his 2006 350Z for some tuning on 91 octane. It uses a naturally aspirated built IPP long block running 11:1 Wiseco pistons and Eagle rods. It also uses JWT S7 camshaft featuring 262 degrees of duration and 11.43mm of lift. For the exhaust it uses aftermarket headers, test pipes, and NISMO catback. On the intake side it uses a Kinetix intake manifold and Injen cold air intake.290 whp and 260 torque. With higher octane fuel or ethanol this Z can make well over 300 whp.

HKS SC’ed 350Z Revisited

Posted by : Sebastian Chacoff On : October 10, 2013

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Chris came back for a retune after installing the factory cats back on the Z. We were pleasantly surprised with the results.

On 9 psi of boost and 91 octane for 352 whp & 377 torque.

On 11 psi of boost we made great numbers. 398 whp & 380 torque.

More Boost for Vivek

Posted by : Sebastian Chacoff On : September 15, 2013

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Vivek came back for some small upgrades and one of them was a pulley swap on the Vortech blower. You can see his last post here.

It’s hard to tell much change from over a year and a half ago but besides the smaller blower pulley we added an idler pulley on the front side of the blower bracket for more belt wrap which will help with more consistent boost pressures. We went from the 3.33″ pulley to 3.12″ pulley on the blower.

376 whp for 34 whp more over peak and 313 torque up from 287 torque.

GTM G35 Sedan HR TT

Posted by : Sebastian Chacoff On : July 25, 2013

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Steve sent us his black sedan for some sleeper power. We went to work installing a GTM Stage 2 Twin Turbo Kit with all the fixings.

On the lift ready for surgery

Intake manifold off to install the larger fuel injectors, colder spark plugs, and replace both valve covers.

The heart of the kit are these GT2860RS turbos with .86 A\R turbine housings (Stage 2)

The driver side turbo installed.

Passenger side installed.

We also added a GTM 34 Row Engine Oil Cooler located behind the large intercooler. The kit uses Tial BOVs which can be seen near the air filters in the above picture.

Since we went with the larger 3″ down pipes we modified the Stillen catback to cone up and then down for optimal flow.

It would be hard to tell its turbocharged.

Boost is controlled with a Blitz sbc-iD Spec-R.

For good measure an Innovate MTX Digital Wideband Gauge was installed in the glove box.

Tuned on 91 octane for 449 whp and 388 torque on 9 psi peak of boost.

JWT 350Z TT

Posted by : Sebastian Chacoff On : July 21, 2013

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Rory came by a few weeks ago to tune his 350Z. Equipped with a JWT TT Kit we went to work replacing a few maintenance items and tuning.

All on a stock block.

91 octane and two different boost levels. 405 whp on 8+ psi and 374 whp on 7 psi.

350Z TT

Posted by : Sebastian Chacoff On : July 14, 2013

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Geo’s 350Z came to us for some attention after some years of running on a Greddy TT kit. We upgraded the fuel injectors from the RC 440cc to new Bosch 650cc. We also replaced the ECU with the new Haltech Platinum Pro-Plug-In. It previously had the old Haltech patch harness kit. The shortblock has been built with Wiseco forged lower compression pistons and K1 rods.

New Bosch injector on the left and old RC injector on the right.

Tuned on 91 octane for 429 whp and 421 torque.

Update to Boosted G35 Sedan

Posted by : Sebastian Chacoff On : July 10, 2013

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Ben came back a few weeks ago from Vegas after having completed a few more efficiency changes to the JWT TT Kit. This allowed us to increase the boost pressures more. Here was the previous blog post on this G.

All on 91 octane. Nice increase in power! There is still more to do to improve upon the efficiency. Almost 100 torque and whp gained at 5500 RPMs. Ben’s put over 60,000 miles since we last tuned it!

Sage Track 350Z

Posted by : Sebastian Chacoff On : June 24, 2013

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Precision Z brought over the Universal City Nissan Track Z33 for some tuning. Armed with minor bolt-ons and JWT cams we went to work tuning.

We didn’t complete the baseline run because of how far off (dangerous) the original tune was. At 3k RPM we gained an impressive 42 ft\lbs of torque! Now this VQ can make power all the way to redline, safely!