DIY Fix: How to Install a Greddy Boost Cut Controller (BCC) on a 2JZ-GTE with VVT-i (Lexus GS300/Toyota Aristo)

A Greddy Boost Cut Controller (BCC) will allow you raise the boost pressure without hitting the factory boost cut.

Our project Lexus GS300 (Toyota Aristo) has been running great, and we love the flexibility of the VVT-i 2JZ-GTE engine around town.  Boost comes online at 1500 rpm in sequential operation to provide adequate torque, and the 2nd turbo comes on at about 4200 rpm to provide additional power up top when needed.  We switched the car to a parallel setup aka True Twin Conversion (TTC mode), which has a bit more lag with the turbos providing boost starting at about 2800 rpm, but there is no dip in power between 3800-4200 rpm when the 2nd turbo would spool up in sequential mode.  This gives the car a more linear feeling powerband with more midrange punch, albeit at the expense of low end torque. 

We recently installed a bleed valve style manual boost controller to increase the boost from the factory setting of 12 psi.  One thing we noticed with the installation of the boost controller was the immediate increase in low end torque.  Noticeable boost (~5 psi) would come in at about 2200-2400 rpm depending on the gear we were in, which made our GS300 much easier to drive around town at low speeds.  We wanted to set our boost to 16 psi, however we were running into boost cut at 14.7 psi (1 Bar) of boost.  Boost cut is a safety feature where the computer cuts the ignition to the motor if the manifold pressure exceeds a certain threshold (1 Bar in our case with the 2JZ-GTE engine) for more than a second or two. 

To bypass the factory boost cut, we went with Greddy's Boost Cut Controller (BCC).  This device caps the voltage signal coming from the manifold pressure sensor, so the car's computer will not invoke boost cut.  Since Greddy does not make a 2JZ-GTE specific BCC, you will need to source one for a 2nd generation MR2 (SW20 chassis).  Follow along as we show you how to install the BCC on a Lexus GS300/Toyota Aristo 2JZ-GTE VVT-i engine. 

DIY Fix: Increasing trunk tension on a Lexus GS300 or Toyota Aristo (preventing decapitation!)

The Lexus GS300 (Toyota Aristo for our overseas readers) is a great luxury sport sedan, and it has been our ongoing project car for the past 18 months.  There are a lot of things we love about the car, and a few things we don't like.  One annoyance is the fact that the trunk closes way too easy, and it comes down with enough force to leave a bruise on your back or head, such as when were installing the rear strut tower bar on the car. 

On a recent trip to get groceries, a small incline was enough to keep our trunk from staying open.  Juggling groceries, packing a stroller, getting rained on, and caring for a toddler don't make for a great mix.  We decided enough was enough, and took a look to see if we could do something to keep the trunk from being so easy to close.  Thankfully, there is a remedy to increase the tension on the trunk, and it literally took a few minutes to do.

DIY Fix: How to Remove and Replace Lower Ball Joints and Outer Tie Rods (Lexus GS 300/Toyota Aristo JZS161)

Ball joints and tie rods are critical for maintaining steering control and safety.  A broken ball joint or tie rod can result in a catastrophic accident.

In recent weeks, we've received quite a few questions from people asking if we can help them identify odd noises coming from their vehicles.  While we cannot guarantee we can help them pinpoint the exact cause of the noise, we generally ask them a few questions or ask them to send us a video to help us get an idea of the general location of the noise. 

The most common one thus far has been odd noises coming from the front end of a person's car, and aside from shocks or wheel bearings, we noticed that ball joints and tie rods are the usual culprits.  Follow along as we explain how to check for bad ball joints and tie rod ends, and show a general how to on our very own project car.

DIY Fix: How to Replace Your License Plate Bulb / Light (Car: Lexus GS 300)

Spring is in full effect, and since the days are getting longer little by little, some of us may not have to use our lights as often while driving.  One thing to check after a winter driving season are your vehicle's exterior lights.  Many times, this is a really quick inspection that people forget to do.  The ones that we do check often are the brake lights and headlights, but there are a pair of lights which do get ignored: the license plate lights.  These tiny bulbs can sometimes be the reason for being pulled over.  Follow along as we show you how a mini DIY tutorial on how to replace the license plate bulbs on a Lexus GS300, aka Toyota Aristo for those of our readers in Japan.  Remember, that this tutorial is just a reference and we are in no way responsible for any damage you do to your vehicle.  If in doubt, consult a professional for assistance.

DIY Fix: How to Remove and Replace Glass Headlight on Your Car

Did road debris or a rock damage your headlight?  We show you how to replace the glass lens!

While spring is on its way here, the hours of daylight are still less than the hours of darkness and many drivers spend part of their commute using their headlights.  Many new cars have headlight housings made of plastic, but a lot of older cars have headlight housings made of glass which are prone to cracking to if they are struck by debris.

A small chip can quickly spread into a large crack and make night time driving hazardous for both the driver and other commuters.  The crack affects the beam pattern, increasing glare for oncoming drivers.  For the driver, moisture can enter the housing and short out the headlight, or the glass housing can shatter.

Our daily driver vehicle is equipped with glass headlight housings, and we recently had an errant rock create a chip on our housing which had spread to a massive crack in a few miles.  By the time we got  home from our work commute, the housing was threatening to completely break.  Rather than pay a lot of money to have the dealership/mechanic's shop fix the headlight lens, we decided to save some money and do it ourselves. 

Follow along as we show you a step-by-step tutorial on how to replace the glass lens housing of the headlight. 

Tech Tip: Thermostat Replacement Interval

The summer driving season is in full swing, and while it is nice to be able to cruise the streets and hit the beach, we would like to remind you to check up on your car's cooling system.  The extra stress placed upon your car's cooling system during the summer means you should check up on the condition of the system, and more specifically the thermostat.

DIY Diagnosis: Loose Fan Belt or Serpentine Belt Sound

We were asked why someone's car was making a high pitched squealing sound when the person first started the car, or took off from a stop.  The most common cause of the squealing sound is a loose fan or serpentine belt.

Random Wrench Tip #4: Quck and Easy Makeshift Funnel

If you've ever had the unfortunate experience of having to add fluids to your car at the side of the road or in a parking lot away from home without a funnel, you know how frustrating it can be to keep the fluids from spilling all over your engine bay.  The ordeal can be especially maddening when the fluid happens to be brake fluid because it will quickly damage any painted surface. 

Fear not, as this random wrench tip will make you feel like MacGyver in no time!

Random Wrench Tip #2: Making a handy parts tray

When working on a car or a house project, it's very easy to lose the screws, nuts and bolts that are needed to complete a task.  Perhaps you also might not be able to finish in time, or maybe you want to organize some of the small items in your garage.  Nothing is more frustrating than to be on a search for that final, elusive piece to the job! 

The simple oil change?

I had a conversation with a friend a few months ago regarding basic maintenance of any vehicle.  We pretty much glossed over them: oil change, air filter, belts and brakes seemed to the ones that people can do at home with some hand tools.

When it came to the oil change however, for convenience's sake my friend said he always opted to go to the quick lube places since the price of having someone else change the oil was about the same if he were to buy the parts and do it himself.  He also happens to live in an area where doing car work is frowned upon by the local housing manager. 

His main concern when going to these places were if his old oil filter was actually being replaced.