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Turns out that water is a more effective medium than rocks when it comes to the jet unit in our Sea-Doo Spark It's the eternal battle between an intake grate that is tight enough to keep rocks out and one that won't restrict the intake flow and choke performance. Unfortunately this is an occupational hazard when you're exploring shallow rivers here in Queenstown or landing on rocky beaches. A...
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Nitrous is often considered to be 'cheating' when it comes to making more power. The reality though is that there's no easy way of making huge power and just like turbos and superchargers, nitrous offers it's own challenges to both the engine builder and the tuner. Nitrous increases engine power by injecting nitrous oxide into the inlet ports. Once inside the combustion chamber the nitrous and...
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JDMyard Pty Ltd's EG Civic is a World Time Attack Challenge crowd favourite and this unassuming little FWD car punches well above its weight, winning the hotly contested Open Class outright in 2015. We speak to Dave from JDM Yard and find out what makes this car so fast, what the team have changed for 2016, and what challenges they needed to overcome with high power and FWD.

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Bullet Race Engineering are world renowned for their billet engine blocks which are seeing use in both drag and circuit applications and breaking records everywhere. In this video we find out what goes into designing and building a billet 4 cylinder engine block that can cope with 95-100 psi of boost pressure, 11,000 rpm and 1900 horse power.

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EFI technology circa 1991. There's nothing for scale in this photo but that ECU is about the size of a VHS player The Electromotive ECU was still advanced enough to get Gibson Motorsport the win at Bathurst in 1991. A significant downside is the fact it was tuned via removable EPROMs that were located in the silver compartment on the top left corner.

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It's always a good time visiting MoTeC HQ. After we got past the two armed guards at the door, the metal detector, finger print scanner and retina scanners, we had a quick rummage around the inventory room. This is what heaven looks like for anyone who loves MoTeC product! Just imaging how many horsepower will be controlled by all of those boxes...

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How many times have you heard arguments about how power at the wheels equates to power at the engine?

It's a never ending debate and Todd and Craig from Mainline DynoLog Dynamometers never do things by half so they're instrumenting their new 'Dyno Test Cart' to get some hard data rather than opinions. The twin turbo 632 ci V8 engine is mounted in this pro-mod chassis on a gimbal which allows...
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Cam timing defines when the valves open and close relative to the position of the piston in the engine cycle, and adjusting the cam timing can have a big impact on the shape of the engines torque curve as well as how much power it makes. The Toyota 3sge engine powering Beau Yates immaculate ae86 drift car shows two techniques for adjusting the cam timing - On the intake cam the original...
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Have we got any N/A engine fans out there? While we were at World Time Attack Challenge we caught up with Nigel from Engineered to Slide and checked out his amazing Nissan S13 build. In a world where power seems to reign supreme, the naturally aspirated path is a tougher one to walk. It's also arguably more difficult and more rewarding to achieve truly impressive results than when modifying...
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One of the crowd favourites at World Time Attack Challenge is the JDMyard Pty Ltd EG Civic which has formed a reputation as a bit of a giant killer in the Open Class. All the power and all the aero downforce in the world don't matter though if the wheel alignment is incorrect and in this photo the team are performing a track-side alignment prior to their next session using string. You'll see...
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When we get back to basics, the EFI tuner’s job is really all about two aspects - Delivering the correct amount of fuel to the engine, and then igniting it at the correct point in the engine cycle. If we get these two aspects right, the engine will make optimal torque and power, while offering good economy, minimal emissions, and great reliability. In this picture we can see a wideband lambda...
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For an engine management system to deliver the right amount of fuel, it's critical for it to know how much air is entering the engine at any time. In this video we are going to talk about the different ways the ECU can achieve this.

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Works of art like this #Nissan #SR20 billet block from Bullet Race Engineering are one of the reasons why the power levels that many once thought were impossible, are regularly being smashed these days. These blocks are machined from a solid block of aluminium and since Bullet are starting from scratch, this gives them the chance to add features that improve strength far above what a factory...
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Some fresh produce from the team at Radium Engineering showed up yesterday and we're a little excited! This is one of Radium's Multi Pump Fuel Surge Tanks (MPFST), and it's destined for out turbocharged Toyota 86 development car. As many people are finding with the 86/FRS/BRZ platform, they suffer badly from fuel surge under hard cornering at the race track and this gets much worse when you're...
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Here’s a behind the scenes peak at the development and prototyping that went into the design of Turbosmart's new Powerport blow off valve. By modelling the airflow through the blow off valve, Turbosmart engineers could try several iterations of the design and test the airflow potential without machining a single piece of aluminium. This meant that before the engineers got anywhere near the CNC...
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Nissan's optical cam angle sensor is well known for being problematic when you start modifying the engine - In particular we see triggering problems when aftermarket cams are fitted, however even 100% stock engines can show triggering issues. A popular solution is to switch to a crank-trigger system where the ECU receives engine speed and position data straight from the nose of the crankshaft....
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A plug and play replacement ECU for the HKS F-CON and F-CON V Pro engine management system. Access to the software to tune the F-CON ECUs can be difficult outside Japan, leaving many with limited tuning options. The Link ECU G4+ Kurofune is a smart solution, providing freely available tuning software and the ability to add advanced motorsport functions to existing F-CON equipped cars.
[Behind the scenes of a paddle shifted gearbox] Paddle shifted gearboxes are becoming more common in professional and semi-professional motorsport. In this video we discuss how the MoTeC M1 ECU operates a paddle shifted Holinger Engineering gearbox fitted to a supercharged Toyota 86 rally car. Interested in tuning? Sign up for a free tuning lesson series here: bit.ly/1USZMUp
In this video we look at how the GM PCM controls the ignition timing being delivered to the engine. We look at how to use the HP Tuners VCM Scanner software to find exactly where in the ignition tables the PCM is accessing, and how the final ignition advance is modified by the various correction tables. We also discuss the knock control system and the interaction between the high and low...
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'Without data, all you have is an opinion' - Easily one of our favourite quotes. In this photo we can see a linear shock travel sensor fitted to the front bottom arm of the V-Sport Time Attack Toyota 86. These sensors are typically logged at 500 samples per second and allow the engineer to see how the suspension is moving in response to undulations on the track. By analysing the shock position...
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