When you get in your E46, what more are you looking for out of the drive? Possibly more volume out of your exhaust? More induction noise? More power? Each and every one of these products can help you to achieve to power, sound and aesthetic that you need for your E46 330. Shopping for performance mods can get complicated and be a hassle trying to compare, choose an option or find what fits the variances such as alternator brand that can be found on E46's. This is a guide to help you increase the performance, sound and attitude of your E46. 

Intake -  Add a free-flowing intake featuring a roaring induction noise and increased performance to replace your restrictive factory intake. Flows on average 71 CFM more than the stock intake system, a ~27% increase in intake efficiency. Direct fitment, install guide can be found on the product page.

Catback - Lightweight performance exhaust for your E46, featuring a valved muffler and controller to change the sound with the click of a button. Designed "to a T" specifically for your E46 to improve flow, power featuring two completely different volume levels for an intoxication experience. Featured on the ECS Product YouTube page: Link Here: https://youtu.be/pc996lvvbAU

Power Pulley kits - Possibly the best horsepower-per-dollar available anywhere. No downsides, no compromises! Underdrive Power Pulleys work to 'free up' horsepower. Any accessory that spins from the main drive belt is using up power. That's power that could otherwise be used to move the car. By giving some of that power back to the engine, you can make the car faster! 10-20% reduction in rotation releasing up to 11hp on most BMW six-cylinders. Compatible with multiple different alternator setups. 

Software - Shark Injector Performance Software designed to unlock your BMW's potential. Removes top speed limiter, raises rev limit to 7,000rpm, improves throttle response, and improves power output: +4HP +7LB/FT gains! If you're looking for the easiest way to add power and torque to your BMW, a Shark Injector is answer to your prayers.