This site contains car modification and auto upgrade information specifically for the turbo import Toyota JZX90 MarkII TourerV, however the principles applied here can be mostly utilised regardless of the make or model of motor vehicle.
Finance Me - Easy Online Finance for your next car, house,
or personal loan.
HOME
SPECS
models
specs
gallery
ENGINE
Exhaust
Intake
Cams
Fuel
Management
Oil Cooler
TURBO
Dump Pipe
Boost Control
Turbo pt1
Turbo pt2
FMIC
SUSPENSION
Coilovers
Chassis Bracing
DRIVETRAIN
Diff
Gearbox
BODY
Bodykit
Venting
Grill
Lights
WHEELS
Rim Sizing
Contact
Post your car for sale now. It's free.
4x4 Store Australia
Fujitsubo Exhaust Install 22/8/2004
Prior to the installation of the Fujitsubo Cat back system I had installed a custom Y-pipe and had Liverpool Exhausts make up a custom 3 inch downpipe and high flow Catalytic convertor. I had been running the standard cat-back part of the factory exhaust still in place. It is very quiet but also rather restrictive. The stock exhaust sounds rather different than the Soarer due to the secondary resonator and single muffler rather than dual mufflers.
The Fujitsubo exhaust is a lovely piece of Japanese engineering. This particular system is known as the Legalis SuperR. It is quality SUS304 stainless steel, with quality welds and fittings. I previously had a stainless exhaust made up for my RX7 locally and the quality of the material, welds and craftmanship was total crap compared to this. Even the nice work that Liverpool exhausts did on the front part of the exhaust is comparatively poor quality when contrasted with the Fujitsubo system. By looking at it, it definitely seems worth the few extra dollars it cost to get it shipped from Japan. The kit is comprehensive and comes with all of the gaskets, nuts, bolts, and mounting brackets to fit onto the car perfectly without any modification.
I am very pleased with the craftmanship of this exhaust system, and if looks are anything to go by then this should also perform well. In fact the Fujitsubo website (which is another testimony to their high level of quality) has detailed information regarding each of the bolt-on exhaust systems that they manufacture, even with sound files and comparative dyno charts before and after fitment of their exhaust systems. They claim for this particular exhaust approximately 11kW gain in the upper rpm. I was certainly looking forward to that, and also the superb sound that it was promising to make,
Fujitsubo systems are designed to be as free flowing as possible with only slight bends and certainly no unnecessary tight changes in direction. If you look carefully at the flange, you can see that there is a smooth transition from the flange diameter up to the pipe diameter. At each juncture in the system, there has been careful attention paid to maintaining good flow. Looking inside the pipe reveals this in the design. There are no sharp edges and wherever there are transitions they are managed with a smooth design that is almost as nice as the outside.
When you compare the stock exhaust to the Fujitsubo system it is obvious that there is a lot of power gain to be had. Apart from the huge difference in pipe diameter, the stock system has a curious braching that goes nowhere. I can only assume that this is a resonator used in an attempt to eliminate droning. The middle resonator, extra flange joint, squirrely bends and baffled muffler all contribute to a much greater flow restriction than what the Fujitsubo system promises.
Of course the Fujitsubo system is considerably lighter than the factory system also. Although I didn't put them on scales to compare, it was clear when picking them both up that to stock system was much heavier. Fujitsubo claim the stock system weighs 21.5kg while their system weighs only 12.6kg, nearly half the weight. Apart from the actual size difference, (in that the stock system has more pipe length and bigger heavier resonators and muffler), the Fujitsubo system also utilizes a high quality thin-wall SUS304 stainless steel to reduce the weight even more. OK so on to the installation process.
Obviously the first thing to do was to jack the car up, place a pair of car stands under the car for safety, and remove the stock exhaust system.The stock system mounts in five places; two bolts at the flange, a rubber mounting at the terminated resonator, a rubber mount midway, a rubber mount before the muffler and a rubber mount at the rear. Of course there is also the flange joint mid-way down the pipe and I also unbolted this as it made it much easier to remove the system.
The new system is then slid under the car (carefuly so as to not scratch that beautiful shiny stainless finish) and hung in place loosely on the rear of the rubber mountings. It was then easier to lift the front of the pipe up to the flange at the front. A light smear of gasket sealant on the flange gasket is used and it is then bolted up finger tight. The other mounting points are designed to bolt onto the exhaust and slide into the existing rubber mounts. The advantage of this means that you don't need to twist and manipulate (and curse) while trying to get the stainless mounting rods into the rubber mounts. The mounting rods can be slid into the rubber mounts, the exhaust is then raised into place and then bolted to the stainless mount very easily.
The mounting points were nicely placed so that there was no difficulty in getting the exhaust mounted. The ease with which a bolt on piece of hardware is mounted is proof of its workmanship, and this exhaust fitment was a breeze. I wish all mods were this easy. (Sounds like I am a Fujitsubo salesman doesn't it. I guess I am just a happy customer!) The first picture here shows the flange at the front of the system. This was bolted up loosely, and once the other mounts were located these two bolts are tightened up. The second picture show the next mounting point as we move towards the rear. It sits just behind the resonator. The rod is slid in and then two bolts are installed.
This is the next mounting point which sits just in front of the muffler. Again the mount bolts straight up. Once these are bolted in and tight, the last mount is bolted in. This is the ring clamp that connects to the muffler body itself and has an attached arm that hooks into the stock rubber mounting position.
And that pretty much concluded the installation. It's rather straight forward really and just bolts right up. The third shot here shows another view of the first rubber mounting position just after the resonator.
The only concern that I had with this installation was that the pipe ran very close to the rear subframe assembly. Less than a millimetre in fact, so I was worried about vibration and rubbing. I was able to manipulate the rearmount a little (as it is designed to allow a bit of adjustment to get it just right. After initially starting the car and taking it for a drive I did ocassionally notice some vibration from this point as it touched, however the system soon "settled in" and the vibration disappeared. I could have probably tapped the lip of the subframe up a little but since the vibration disappeared it was not necessary.
I am very happy with the finished product. It looks good, sounds good and noticably delivers a little more power as well.
At idle the stock exhaust emits an almost imperceptible 60 db and at 4650rpm hums at a docile 68 db. The Fujitsubo rumbles at idle to the tune of 84db, and at 4650rpm screams out a howling 95db. It is not offensively loud but it certainly has an addictive and aggressive sound to it. If fact after first putting the system in I just couldn't help but rev out each gear everywhere I went just to listen to the awesome sound. Tunnels are still my favourite!
site
by 
RECENT MODS CHRONOLOGY
5-Jan-2007
Turbo pages and Headlights
I have recently added a new page about my single turbo conversion. There is a second page yet to come, but page one outlines some of the supporting components needed as well as the turbo itself.
Page 2 will be forthcoming where I detail the fitment of the turbo, manifold and wastegate.
I have also added a page for modifications to my headlights that should be very useful for owners of import vehicles.
25-Jan-2007
Site Revamp
Wow, it has been a very long time since I worked on the site, but now I
am in the process of redesigning it so stay tuned as I add some more content
and attempt to bring this project up to date.
18-Mar-2006
Car Changes
Lots has happened since my last update on upgrades to the car. For instance
the car is now running a 2JZ bottom end and the gearbox has been completely
rebuilt with a stage 1.5 shift kit, beefier clutches and a 2800 rpm stall convertor.
To say that this has transformed the car is an understatement. The car is now
torque heaven, and is an absolute pleasure to drive. The lag that was sadly
felt with the 2.5L motor is now completely gone with the 3L and the stally.
When I can find time to update the site with the process I went through I will
do so. I have many hundreds of pictures to add.
Whatever your vehicle is, whether it is a turbo car or NA or a Toyota or other manufacturer, I hope that the automotive information on this page is of benefit to you as you take the path of modification and upgrade on your car.
Toyota JZX90 MarkII TourerV.