Power and torque pour out in a nice, even arc across the tach. When you add a turbocharger and intercooler to that setup, you have an efficient, fun-to-drive package. This allows for cooler operation and more complete burning of the fuel/air mixture. Try building a direct-injection system using parts from your typical tuner mail-order catalog.ĭirect-injection places the fuel injector directly in the combustion chamber instead of farther back in the intake plenum. But not just any 2.3-liter four this one came equipped with direct-injection spark ignition. To increase horsepower and torque to reasonably powerful levels in the MazdaSpeed 6, Mazda went high tech.īecause the V6 with all the MazdaSpeed stuff wouldn’t fit underhood, Mazda engineers brought in the 2.3-liter four. When we said tuner car, we meant tuner car made by a squadron of Japanese engineers, not the typical hand grenade sometimes seen in an IDRC/Sony Xplod Battle of the Imports staging lane.
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