![]() (In some cases, as the factory ECU is locked flashing is not an option, so an aftermarket ECU is the route to take, and many of these will outperform factory ECU's but make sure it has knock protection and that you get it setup properly.) Plan your options and then acquire your mods and set yourself a power target to avoid costly mistakes.ĮCU flashing helps fully realize the full potential of all the parts you've fitted to your 4G6. ![]() Typical stage 3 mods often include: Twin charging conversions, Competition cam, Adding or Upgrading forced induction (turbo/supercharger), Crank and Piston upgrades to alter compression, Internal engine upgrades (head flowing porting/bigger valves), Engine balancing & blueprinting. Typical stage 2 mods often include: Ported and polished head, induction kit, fuel pump upgrades, Fast road cam, Sports catalyst & performance exhaust, high flow fuel injectors. Typical stage 1 mods often include: Remaps/piggy back ECU, drilled & smoothed airbox, Intake manifolds, Fast road camshaft, Sports exhaust header/manifold, Panel air filters. Head work - The goals of porting and flowing the head are to get air flowing into the engine while removing flow restrictions and turbulence.It is one of the most costly upgrades but provides the best gains. Upgrades to turbochargers and superchargers - forced induction is the most efficient approach to increase air supply, allowing you to burn more fuel and make more power.Intake and Exhaust - Note that on their own these mods will NOT ADD POWER in most cases, but they can help enhance power after other mods by removing the restriction.Fast road cams are one of the most significant mechanical changes, but they must be installed by someone who knows what they're doing and they are not always easy to source but you might find a local firm to regrind a stock camshaft.Engine Tunes - engine tuning/remapping provides the most advantage in terms of cost savings, aftermarket ECUs, and piggyback ECUs are all alternatives.Be sure to keep up with our latest YouTube content and subscribe. Please watch our video which covers the 5 principles of tuning your car. The ecu map and injectors and fuel pump also will say much on the torque gains you'll hit.Īltering valve durations can alter the torque band and on most engines the exhaust and intake durations do not need to match, although most cams and tuners use matched pairs there are some advantages to extending the intake or exhaust durations. Some 4G6 engines respond better to less aggressive camshaft durations than others. You should ideally optimize your torque band to your typical driving style so for a road car stick with a shorter duration 4G6 camshaft The intake & exhaust durations will alter depending on the chosen cam profile, so large engines power gains are on offer for cam upgrades.įast road cams commonly increase the bhp and torque throughout the rpm range, you could drop a little low down torque but your higher rpm power will be lifted.Ĭompetition cams, increase the higher rpm power band but as a result the car will not idle smoothly and low end power nearly always suffers.Ī Competition camshaft won't do well if driving in heavy traffic. The cam profile plays a big part in the engines power output so cam upgrades make quite a large difference. We won't be swayed by popular 4G6 parts, they need to be cost effective. The ultimate 4G6 parts on an engine are as we have found the ones that give the best value for money. Tuning the Mitsubishi 4G6 and best 4G6 performance parts. 1998-2005 Mitsubishi Montero (V11 - 2 door) Latin America. ![]()
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