Just as important as the tune is who is writing it. “Some four-cylinder engines really benefit from an exhaust, where some actually lose low-down torque and richen the mixture up.” “The modifications all depend on the desired outcome and the engine,” Brendan Cook said. With some models requiring significant upgrades, like heavy duty clutches and free-flowing intercoolers with even mild power upgrades, it’s important to speak to your tuner about exactly what you’re chasing and what you hope to achieve while you’re still in the planning stages.
#ECU TUNING FOR BEGINNERS SERIES#
In the case of 70 Series Cruisers, where owners are routinely chasing upwards of 50-100 per cent more power, turbocharger upgrades, larger injectors, free-flowing exhausts and intakes are all mandatory. With most modern common-rail turbo-diesel engines you can expect a 20-30 per cent increase in power and torque with just a tune although many stock components will be the limiting factor. There are a few factors you’ll need to take into consideration before trusting your 4x4’s brain to a man with a laptop, namely how much power you’re chasing and how talented your tuner is. WITH hundreds of maps available and endless ways the tuner can customise them, there’s more to the results than a simple percentage increase in power. “This is achieved by first reading the stock file from the ECU, modifying certain maps and then writing the modified file back into the ECU,” Paul Farrell added.
#ECU TUNING FOR BEGINNERS UPDATE#
Not unlike an update for your phone that adds new features, the process involves overwriting the information on the existing ECU. “Anything from EGRs, boost control, boost limiters, variable vane control on the turbo, engine timing, rail-line pressure, torque limiters – there are thousands of individual maps.” This opens an enormous amount of control for the tuner, allowing them to make the engine perform exactly how they want not only giving higher power figures on a dyno sheet, but real world driveability too.“Essentially, in a small amount of way, you can change anything your mind can think of,” Matt Smith said. Instead of tricking the computer into behaving how you want it to with a few minor inputs, re-mapping is able to change how the computer itself behaves. Rather than improving on the chip-style of tuning previously used, re-mapping is an entirely new way of looking at things with a whole host of benefits. If the tuner wanted more fuel pressure at the injectors, the chip would tell the ECU there’s less pressure than what is actually there, forcing the ECU to ramp up pressures to compensate. Performance chips were perfect for this, as all they had to do was alter some of the half dozen signals the ECU was getting and the ECU would compensate for it. Electronic diesel tuning has been around for almost as long as electronic-controlled diesels, and early models were incredibly rudimentary with very little that could actually be changed. To understand the pros and cons of re-mapping, as opposed to a simple performance chip, it’s important to have a solid understanding of the major differences. To help cut through some of the fog surrounding re-mapping, or flash tuning as it’s sometimes known, we’ve enlisted the help of four of the top diesel-tuning experts currently spinning err… keyboards on late-model diesel engines in Australia: Brendan Cook from Diesel Power Unlimited, Paul Farrell from Geelong Performance Centre, Matt Smith from Just Autos, and Stephen Booth from Power Torque Victoria. After all, manufacturers have things absolutely perfected, so any modification is a recipe for disaster, right? Not exactly.
#ECU TUNING FOR BEGINNERS CODE#
They’re an incredibly complex bit of kit, so it’s no surprise that when people started pulling them open and rewriting their code it made more than a few people a little nervous. It controls every single aspect of your 4x4, from the rate the indicators flash right through to how long each injector pulses open, as well as the angle of the blades inside your turbocharger at a given RPM. LURKING inside the kick panel of your 4x4 is a computer so powerful NASA would have paid millions for it to help put man on the moon.
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