BMW 3-Series E46 Intake 1999-2006

Interested in picking up our E46 intake system? Check out our product page for more information!

Mishimoto BMW E46 Performance Air Intake

Final Intake Images

With successful testing data acquired from our first prototype, it was time to make a final prototype and perform our last test fit before producing a batch of final intake systems. Check out a shot of the shroud, intake hose, and filter!

Mishimoto E46 air intake shroud, intake hose, and air filter

The airbox is constructed of powder-coated steel, and we line the edges with weather stripping to prevent any vibrations or damage. The silicone coupler is a four-ply unit designed specifically for this kit.

The air filter shown above is the Mishimoto Oiled Air Filter. These filters are completely serviceable and can provide a lifetime of service if appropriately cleaned and maintained.

We also designed an internal CNC-machined connector that will allow the silicone intake hose to mate properly with our air filter. This setup can be seen

Interested in picking up our E46 intake system? Check out our product page for more information!

Mishimoto BMW E46 Performance Air Intake

After completing our initial prototype it was time to strap this E46 to the dyno and make a few pulls. We would be evaluating power output, monitoring vital engine sensors such as AFR, and collecting sound clips for comparison against the stock intake system.

Dyno Testing

E46 on dyno for intake testing

E46 on dyno for intake testing

E46 on dyno for intake testing

Time to make some pulls! Check out the dyno video below.

Initial Impressions

The video shows the changes our setup made in  intake noise. This is likely a result of our open-element filter residing within the engine bay. Although closing the hood seals off the airbox portion of the intake, it is still more audible than the stock unit. The stock airbox is designed in a way to reduce noise and create a more drivable experience for non-enthusiasts. That said, this creates a numbness among car