Let's take one more step into Emmy's engine before we go look at Shawn's Downing Atlanta supercharged 1.9. The main throttle body is attached to the black plastic intake manifold. Inside the manifold is the Intake Air Temperature Sensor (IAT). When you first start the engine it is used to determine initially how much extra fuel to inject to get it to start. After the engine is running it is only used as a trim on the ignition advance to avoid detonation. It is also used to determine if the car is being run in "unusual" conditions. Grin. Here is Emmy's air intake system. Air comes in through the Dinan Cold Air Intake, past the HFM where it is measured, turns a corner through a black hose into the Traction Control Throttle Body, then passes into the Main Throttle Body, then into the intake manifold, passing the IAT where the car measures the air temperature. Now let's look at Shawn's air intake system in the Downing Atlanta supercharged 1.9. ( See Shawn's article on "Centrifugal vs. Positive Displacement superchargers") Air coming in from the Fogg Air Intake Box through a black hose with the HFM inside into the throttle body then into the Downing Atlanta supercharger then into the intake manifold. Look Ma! No Traction Control! ;D Increase boost with Shawn's Check Valve Upgrade Based on a 1.6 Sebring Miata Upgrade Very nice indeed.

7 ThanksFoggening Part 1 Thanksgiving~~ Part 2 Air Bag Light Reset~~ Part 3 Throttle Position Sensor and Leaves~~ Part 4 Filthy Cold Air Intake Filter~~ Part 5 K&N Filter and HFM~~ Part 6 Throttle Bodies~~ Part 7 Filter to Manifold, Superchargers~~ Part 8 Contact Points, Hood Stops, Spark Plugs, Coolant Leak~~ Part 9 Reinstalling CAI & Wheel~~ Part 10 Happiness is a Clean Engine~~ Part 11 Decorating Storage, Radio Anti Theft, Zpack~~ Part 12 Ski Harlem, 50,000 miles~~

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