Mr. Will from the AZ Project Z32 crew came out earlier this year after performing more “breather” modifications on his Zed.  Will came to us before his most recent mods so we were able to get a fairly reasonable baseline to see the gains received from the new parts.

Since first bringing us his Z, Will’s mods have changed to progressively “refine” his power band.  Below you will see small changes that have had huge impacts on the way his powerband is delivered.  The following runs were ALL performed on 100 octane fuel.

First we’ll start off with a list of mods Will has done.  The first time will brought us his Z was back in ’09 when he had recently (2007) installed GT525 turbos along with a full 2.5″ turbo back exhaust system.  His main list of mods back then would have read:

Built S.B.
Ported Heads & 5 Angle Valve Job
GT525 Turbos
Nismo 555cc Injectors
SZ 2.5″ DPs & TPs
Greddy SP Catback
Unorthodox UD Pulley
Unorthodox Water Pump Pulley
SZ\RPS Street Clutch
SZ\RPS Lightened Segmented Flywheel
JWT Dual POP
Stock IC Piping w\ either Stillen or Greddy Intercoolers (Don’t remember)

So the following BLUE run represents Will’s mod list from above.  A few months later Will came back and had changed to our SZ 3″ Down Pipes and 3″ to 2.5″ Test Pipes (RED Run).  Excellent gains from 3100-5300 RPMs.  48 WHP and 55 torque!  By now your wondering why his power drops off and is jagged by 5500+ RPMs.  Looking at his boost curve you can see boost was smooth and unwavering.  This is something we had seen on some other smaller turbo VGs.  Cam timing plays a large role in this too.

Fast forward to earlier this year and Will made the following changes since adding our 3″ exhaust parts:

Custom “Intercooler” Piping 2.5″ (Adam B.)
Custom “Suction Pipes” w/ Jim Wolf Filters 2.5″ (Adam B.)
Custom “Accordion” Pipes 2.5″ (Adam B.)
Custom “Turbo Inlet” Pipes 2.5″ (Adam B.)
SZ Turbo Expansion Outlet Pipes
Bell Intercoolers 2.5″
Z1 58mm Throttle Bodies
Selin Translator
MSP Manifolds
300 Degree Fuel Rails
Nismo 740cc Injectors

Here are the results over-layed with his previous results.  GREEN run is the latest and Red the previous.  By removing the banana in the tail pipe restrictions Will’s powerband made a huge recovery from 5300+ RPMs.  Your looking at over 80 whp and almost 80 torque gains at just 6000 RPMs.  A huge improvement for his ailing top end drop off.

A link to Will’s post on TT.NET

First off a big thanks to Tony “BigTDogg (MA)” for setting it all up and getting us to Boston back in May.  We started Friday morning by heading out to LAX around 4:30 a.m.  From there we get to our connecting flight in Salt Lake City to get us to Boston late afternoon\early evening.  Just in time to catch a game at Fenway Park to see the Red Sox play!  Sadly though we didn’t get a chance to see the game but it was great to see the ball park in person.  Going to the east coast gave us a great opportunity to see how good 93 octane fuel is.  We had experience with Canadian 94 octane in the past.  We found that the 93 octane fuel was definitley better than our CA 91, but many of the guys in Boston had been running advanced mechanical timing (past 15 degrees on the CAS) and had very lean\advanced ECU tunes to start off.  Many of them had been detonating like this for a long time which can cause (caused) hot spots on the tops of the pistons.  This makes it easier for the engine to detonate under conditions it normally wouldn’t.

Walking through Logan Int’l.

In Tony’s DD vehicle fighting some of the Friday afternoon traffic.

Sunoco gas station.  We can only dream…….

The game was just about to start too!

Our view from the hotel room.  Thanks again to Tony!  Beautiful view of the Charles River.

To the left we had a view of Harvard University.

I can keep boring those of you with what we ate or when we used the bathroom but I’ll advance to the nitty gritty.

The following morning we woke up bright and early to meet Tony and Carlos at the entrance of the hotel.  From there we headed to NEDyno which is about 45 minutes from the hotel.

This gentleman who was standing outside felt it was necessary to boost Carlos’ ego a little more 😉

Carlos’s Z is beautiful and one can eat off of the entire car.  The under-body is spotless and his attention to detail is most impressive (golf clap).

The one thing that would make it look better is yanking that (ugly) Borla Catback.

Pretty under the bonnet as well.

NEDyno our place of worship for the next two days.  John the owner of NEDyno is an extremely nice and knowledgeable guy.  Thanks again for letting us use your facilities and setting off your CO alarm a million times.

Up first was Carlos in his stock turbo’ed beauty.  Carlos had our 2.5″ DPs and TPs that lead to that Borla Catback I mentioned earlier.  Along with some other “minor” bolt ons.  Mod list.

Up next was TJ.  Mod List.

Here’s TJ’s tune on meth using Snow Performance Boost Juice.  TJ found out just how much pressure it takes to pop his weak link methanol lines off!

Jeff’s 93 Tune.  Mod List.

Jeff on crack meth.

Jeff’s slick Aquamist install.

Jeff on Q16.  The addition of some larger intercooler piping would definitely help him.

Silas found out the hard way that with even twin pumps a dirty fuel tank WILL cause fuel pressure drop.  I apologize for the terrible picture.

Silas’ 93 tune after the tank and pump socks were cleaned out.  Mod list.

Silas opted to us windshield wiper fluid.  Even though it contains methanol it doesn’t make the same amount of power as one would with Boost Juice.  We’ve seen this countless times.  It doesn’t pay to be cheap.  I think the wiper fluid was made in China distributed by some Canadian “company” 😉

Greg and John discussing the quantum physics of turbos

The following day Mr. Doug brought by his race Z32 and his brother’s beautiful road race ready Daytona.

In all its glory is Doug’s race Z32.  It would be interesting to see how light this thing weighs.  That is a side exit exhaust you see in front of the rear tire.

Still on stock I\C piping with custom turbo inlet piping.

A\C and Radio users need not apply here.

The elaborate fuel surge tank.

Doug’s 93 Road Race Tune.  Very conservatively tuned for the rigors of road racing.  Doug runs JWT Sport 700s with our 3″ Down Pipes.  After the down pipes its all custom exiting out the side.

Doug’s 100 Octane Road Race Tune.  Again a very conservative tune.

Steve’s 93 Tune.  Mod List.

Sako’s 93 Tune.  When inspecting Sako’s Z, we found that his intake manifold gasket was cracked and leaking.  Sako and his brother pulled the manifold in no time and used silicone as a gasket instead.  Sako was only running boost jets as his method for boost control.  Mod list.

Tony’s VG.  Greg performing a kung fu move on it.

Tony’s 93 Tune.  Tony’s Z was abnormally pinging at low boost.  Fuel pressures were good and everything checked out mechanically.  Turns out Tony had put in some Redline Fuel System Cleaner in the tank.  We drained the tank out and filled it up with a fresh tank of 93 octane and pinging problems went away.  A word to the wise, do not drive hard on gas with fuel system cleaners.  Mod list.

Here’s Tony on meth.  The red run is the tuned run.  I put the blue run which is running meth UN-tuned.  You can see that just slapping on meth injection and not tuning it properly will only get you mediocre results and in most cases cost you power over not even running it.  Notice that between 5500 and 6500 RPMs the boost level is the same yet it is still making a ton more power safely.  Remember to use a high quality methanol.  There’s a reason why windshield wiper is cheap; its meant to clean your windshield.

In no particular order a huge thanks to Tony (and his wife), Carlos, John, Doug (say hello to your dad for us), Jeff, TJ, Steve, Sako (tell your bro hello), Silas, and Keefe.