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For many car enthusiasts, once they purchase a new vehicle, that is only the very start of a long and frequently expensive project of tuning to get improved BMW performance. There are many thousands of different decisions on how to accomplish this. Where do you start, what can be done by the average backyard mechanic and what needs hired assistance? And, where can one source the best parts economically? Sourcing parts is the area of modifying that you have signifiacnt control over and where you can save time and money, if you do your homework.

Now, there is more than one opinion on this subject. For BMWs, a lot of design and engineering was completed by the manufacturer to produce a world class vehicle that is typically a superior performer than many of its competition. It's way too easy to whind up going backwards in your objective for speed by selecting the wrong parts, installing them incorrectly or not matching up the performance levels of different systems on your vehicle. In fact, BMW is now producing an ever growing line of its own aftermarket performance parts so you can be assured of the quality and engineering in these parts as the rest of your car. The drawback is these parts are frequently more expensive than their competition.

So, how should one locate premium parts for your car? I am a huge believer of doing research online using a variety of tools. There are many good user groups made up of many thousands of BMW owners. With a little effort you can frequently find someone with your exact BMW who has already done similar modifications to their BMW and can frequently give valuable information on what works, which retailer has the most competitive price, install instructions and more. Some of the best are Bimmerforums.com, e46fanatics and roadfly.org. Time spent here can save you signifiacnt cost and frustration so you don't have to make the same mistakes as others have.

Another great resource that is frequently overlooked is eBay. The number of choices is often overwhelming and there are a bunch of cheaply made, knock-off parts that you should avoid. If you purchase from a known seller with good feedback and do your research on the part you require and at what price, you can really maximize your modifying budget. You can source new parts, OEM BMW parts and used BMW parts quickly and easily to make your modding project a the car you have dreamed of.