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

’07 G35 Tune

Jesse brought us his clean G for some fine tuning.  No surprise that this car was running uncomfortably lean.  After some tweaking to not only AFR we came up with some nice gains.

Good solid gains of over 11 whp and 10 torque.

Boosted Aspirations………. SC’ed VQ

This JDM rockin’ Z33 is a pantie dropper for sure.  Sporting Seibon C.F. fenders, Volk TE37s Seibon Edition Wheels, and other assorted C.F. ware.

Under the hood it has a gnarly whine that suggests it isn’t all show.  A Vortech snail resides under there willing to boost it with the rest of the mean machines in our shop.  Along with Stillen Headers, factory CATs, and HKS Catback.  Vithorauk (the owner) called on us to tune his Z machine for optimum radness.

Luckily for him he laid off the gas pedal until it was tuned.  It came to us with the UniChip piggy back.  It was a no brainer to yank that thing outta there and get the party bumpin’ with UpRev hawtness.    After swapping out the factory plugs with colder ones and inspecting a few other things it was time to make some boost.  The baseline run with the UniChip had to be prematurely aborted due to unwanted mean and way too lean AFR.  A damn good thing Vithorauk never laid into it.  After some much needed massaging this baby was ripping it hard.  One thing about superchargers is that they do sound f-in mean.  Especially in our dyno room.

The before & after transformation…………….

Self explanatory……the blue run is the baseline on how it came in and red is where it came out rockin’ it hard.  Smooth power delivery and some sweet AFR to go with it (red run).  We made 369 whp & 308 torque with 7 psi of boost.  Props to Anthony @ Antelope Valley Nissan for a job well done in the installation department ( I didn’t have to redo much).

Z33 HR Tune

Juan from Bardabe brought over his 2007 350Z MT HR for some basic pulls and left with more power and a safer car.  Looking at his baseline dyno (in blue) it was way to lean to do a full pull.  His Z had his custom cold air intake, test pipes, and catback.

I don’t remember what catback he’s running (Greddy?).

We ended up with 293 whp and 261 wtq.

350Z Tune

Luis brought us his Z33 AT for a few goodies and ultimately for a tune on his basic NA DE.  His Z has plenum spacer, catback, resonated test pipes, Nismo C.A.I., and UD pulley.  Needless to say his AFR was way out of whack.  So far so that we felt it was unsafe to get a complete baseline pull.  A week before this we made a few baseline pulls on another Z33 that only had a JWT POP for a mod and was running extremely lean as well.  The JWT POP on the DE engines doesn’t change the sampling tube diameter of the MAF so the intake alone isn’t causing the AFR to be lean.

Here’s Luis’ results:

His base AFR (blue pull) was in the 13s and 14s!  After some tweaking we ended up with a safe AFR and a much peppier Z.  We gained over 25whp in certain areas.

Royal Purple Forum Wars TV Show

We had the great opportunity to help out Bardabe Performance in their battle to represent MY350Z.com in the new and upcoming show to be aired on Speed TV April 5th.  We tuned their Z33 for optimum NA power.  Be sure to catch the action as this Z33 goes up against a torque monster Shelby.  Power to the Z!

Check out the teaser:

Royal Purple presents The Forum Wars

SZ Clutches & Flywheels for the Z32 & Z33

Over the last 10 years we’ve worked closely with RPS in combining our research and product developments for the better.  We’ve licensed out the RPS line and made it our own.  This allows us to freely us our own ideas in clutch developments while keeping the quality the same or higher as before.  Our minds here are always crunching when we have the time to develop new things.

We’ve kept the flywheel the same as their wasn’t any more room for improvement in that arena.  We added our logo which is probably good for some horsepower and torque!  Well maybe it’ll make it lighter 😉

On the clutch side of things we’ve lowered pricing on the more mass market style of clutches.  The better part of it is that we’ve added two new models to the line up.

The pressure plates in our high clamp load line have some changes that really have improved them (High 5, Max Series).  The casting for the pressure plates are half aluminum and half steel. We need the steel for the clutch material to go against for durability.  The aluminum has allowed us to make the pivot point release amazingly better than has ever been possible.   In the past modifying a normal casting was the norm.
Utilizing this new hybrid we have much better release, lightweight, and lighter pedal pressure with the same clamp load of the old RPS Max line.

The new SZ discs………
Our new high power single disc set up we are calling the “SZ HIGH 5” This clutch will use our new pressure plate and has a aluminum 5 puck disc that is half the weight of the standard 6 puck disc and this allows butter shifting and is MUCH easier on the transmission. This set up will hold up to 800 HP (real-world testing)  and allow shifting at much higher RPM’s.  Getting into the lightweight benefits reveals much improved high RPM shift-ability.  There is less friction & drag to slow the input shaft down quicker to allow the synchros to mesh up better.  There is also less parts to break like the springs on the sprung hub discs.  The only down side encountered is low RPM load or lugging that creates noise transfer of the drive-train.  Engagement is surprisingly easy and daily driver street-able.

We also have a new Street Disc to go with the new high power pressure plate. The standard street Disc sold by all the companies have a wavy spring in the middle called a “Marcel” spring for a really long engagement and the Disc’s are normally only riveted for attachment. The problem with the street material is it is brittle and the small attachment area with these Disc’s can cause the material to de-face when you miss a shift,  or dump the clutch at high RPM.
To make a street disc much stronger we removed the Marcel spring to get more contact area to hold the material and we use a really strong special glue along with the rivets.  This combination is much more durable and the engagement is just like the stock organic disc.
The New SZ Street High Clutch!

As in the past our clutches include the throw-out bearing, pilot bushing, and alignment tool.  For ordering you can call us at the shop.  We’re in the process of updating our site so look for on-line ordering very soon.

Z33 guys, you will need to purchase the flywheel to make our clutches work.

We’ll have a write up for those unsure on what clutch your application needs along with the workings of the Twin-Carbon line of clutches.

Let’s go drive (shift) some Zs!

2006 350Z UpRev Tuning

Rick brought in his sweet,slammed, drop top Z33 in for some tuning.  After performing various upgrades such as the Kinetix Intake Manifold, JWT POP Charger, Nismo Headers, Helix Test Pipes, and Nismo Catback, it was time to do some tweaking.  The two baselines confirmed that simple modifications like these can drastically change the A\F for the worse.  This VQ was suffering from a very lean A\F resulting in knock and loss in power.  Our quest was to make more power, but also more importantly make it safer.  After some dyno pulls we were able to maximize Rick’s mods to produce some more power & torque and cool the combustion via a safer A\F and cam tweaks.

A gain of over 9 whp and 8 lb\ft of torque.  This is only one side of the story as in many areas we saw gains of over 12-15 and the largest gains to be had were over 6500 RPMs.  From 6700+ we gained over 20 whp.

VQ35DE Exhaust Dyno Comparison

We had the opportunity to test out the new ART test pipes from Motordyne Engineering this past week.  The pipes are very interesting looking.  Based on the Helmholtz resonator design, one can theoretically have a quieter “open” exhaust system.  Our customer brought in his 2007 G35 for before and after dyno results.  I was a bit skeptical looking at them but after it was said and done I was pleasantly surprised!

The G already had on it aftermarket HFC (300 Cell) pipes in it so the gains to be had over stock are even higher.  NO OTHER changes were made, just the pipes.  We hopped in the car after the install and the customer confirmed they were as quiet sounding as the HFCs we pulled off!

The Dyno doesn’t lie, and in this case we confirmed additional power and torque to be had.  We saw consistent gains of 8-10 whp across the board and peak gain of a little over 8 whp.  A\F was pretty consistent between the two runs as well.  One thing to note is that the auto trans hard lines are real close to the resonator and will require some tweaking to get proper clearance.

Two thumbs up to Tony over at Motordyne!

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