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- #BMW TORQUE SPECS E46 INTAKE MANIFOLD UPGRADE#
- #BMW TORQUE SPECS E46 INTAKE MANIFOLD FULL#
- #BMW TORQUE SPECS E46 INTAKE MANIFOLD MODS#
There are some kits around, and typically running around 0.6 bar of boost will give you another 70hp, beware of the manifolds though, left hand drive cars need a different design. NASP engines need quite a lot of work when you add a turbo, so we have a separate guide to help you take into account the pros and cons of going this route on your N46 On popular production engines headers are needing motorsport parts, although some OEM provide fairly well optimized headers.įitting big valve kits, getting port matching and head flowing will also boost bhp and torque, the fantastic side effect is it will afford you a better bhp and torque increase on other upgrades. The bore size, shape and flow rate of the Intake headers can make a large effect on to fuel delivery on the N46. Intake headers take the air during the suck phase from the intake filter and allow it to be pulled into the engine cylinders with fuel for the squish phase.
#BMW TORQUE SPECS E46 INTAKE MANIFOLD UPGRADE#
It will usually give you around 30% more power on turbocharged vehicles and you can expect to see around 15% on NASP engines, but the outcome will rely on the parts you've fitted and the condition of your engine.įeeding air into each cylinder is the aim to any engine upgrade job. (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.)
#BMW TORQUE SPECS E46 INTAKE MANIFOLD FULL#
The N46 engines make great tuning projects and we're pleased to see that there are increasing numbers of parts and tuning parts about.Ī remap allows a tuner to establish the full potential of all the parts you've fitted to your N46.
#BMW TORQUE SPECS E46 INTAKE MANIFOLD MODS#
Typical stage 3 mods often include: Internal engine upgrades (head flowing porting/bigger valves), Crank and Piston upgrades to alter compression, Twin charging conversions, Competition cam, Engine balancing & blueprinting, Adding or Upgrading forced induction (turbo/supercharger). Typical stage 2 mods often include: Ported and polished head, Fast road cam, fuel pump upgrades, induction kit, high flow fuel injectors, Sports catalyst & performance exhaust. Typical stage 1 mods often include: Intake headers, Fast road camshaft, Sports exhaust manifold, drilled & smoothed airbox, Remaps/piggy back ECU, Panel air filters. The engine timing and injectors and fuel pump also will say much on the bhp gains you'll make.Īltering valve durations can alter the bhp 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 N46 engines respond better to less aggressive camshaft durations than others. Competition cams are designed for maximum power at the top end of the RPM range, a place that most daily commutes will not permit! I'd be surprised if you have ever thought or claimed that a N46 Competition camshaft is a pleasure to live with when in heavy traffic because low end power will be very lumpy. On a car driven daily you need to match your engines power to your cars usage. Motorsport camshafts, boost the high end rpm power band but as a result the car will not idle smoothly and low end power nearly always suffers.
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Altering the camshaft profile alters the intake and exhaust durations on the engine and can dramatically change the torque and power output.įast road camshafts usually boost the torque through the rpm band, you may lose a little bottom end torque but high end rpm power will be better. Significant gains on the N46 can be made from camshaft upgrades. We won't be swayed by popular N46 upgrades, they need to be cost effective. The best N46 upgrades on an engine are as we have found the ones that give the best value for money. Tuning the BMW N46 and best N46 performance parts. BMW N46 make a good tuning project and with a few sensible modifications like remaps, turbo kits and camshafts you will definitely enhance your driving opportunities.
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In this article we consider N46 tuning and provide tips on the best modifications for your car. "All you need to know about performance tuning the BMW N46 engine!"