Power Upgrades, Part 2

Update by John Rogers to the Mazda MX-5 Miata project car
Aug 5, 2010

AEM CAI vs. Mazda OE.
AEM Cold Air Intake installed.

If you’ve been following along, you know our Mazda MX-5 has already been fitted with an upgraded header and midpipe from PPE Engineering along with a lightweight race muffler from Good-Win Racing. These help get hot exhaust gasses out the back, but what about on the front end?

To help our MX-5 breathe a little easier, we’ve installed an AEM Cold Air Intake.

There is some debate about how to legally install an intake. According to the rules, the structure of the car cannot be modified to route the intake pipe. Most off-the-shelf CAIs require modifying or removing a splash shield behind the bumper cover to get the “coldest” air to the intake. To avoid any legality issues, we took what turned out to be a very simple route to get our intake installed.

We started out with an AEM Cold Air Intake for the 2006-‘07 Mazda MX-5. Then, we simply deleted one small part and removed one mounting bracket from one of the aluminum pipes supplied with the kit. The CAI’s air filter still gets a steady stream of cold air from an opening in the front fascia of the MX-5, too. The supplied aluminum tubing provides a smooth and straight path back to the engine, eliminating the bulky and convoluted path of the OE intake box.

The engine is a pump after all, and now we can get more air in so we pump more power out.

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View comments on the GRM forums
paulbishop1946 None
8/7/12 7:00 a.m.

Did you do a dyno test before and after you installed the cold air intake to determine the magnitude of horsepower gain?

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