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Why upgrade sway bars? Not everyone goes for handling upgrades first, but this mod is easy and inexpensive with very noticeable gains. Personally we think it makes sense to get under there and make sure your car will go where you point it before you add power. Not to mention this will give you a chance to find any questionable repairs by previous owners. Some platforms are a little easier than others when it comes to accessing these components, so we want to know exactly how to set these up to minimize the time spent on our backs fiddling with lock nuts.  The stock sway bars on most cars are hollow steel tubes that don't resist much side-to-side flex. By upgrading to a kit like Whiteline's complete upgrade kit, we replace these soft steel bars with solid, heavy-duty beams that will help keep the car flat in the corners.  But Where to Start? Generally speaking, adding a beefier bar to the rear axle, and leaving the front softer makes the car want to oversteer or spin, while the opposite makes the car tend to understeer or plow through the corners. We wont dive into that too much further, but if you find the car doesn't turn in like you want, start at the back bar! Stock Sway Bars Soft and lots of body roll Stronger Rear Bar Fights understeer (plowing) Stronger Front Bar Fights oversteer (spinning) Both Axles Stronger Balanced, tight, responsive   For a FWD car like the Focus ST, generally you are trying to reduce the amount of understeer that most FWD cars have.

Boost is awesome, and makes a turbo car do it's thing... but left unchecked, it can destroy an engine in seconds. With a good understanding of how boost is monitored, and controlled, you can be better equipped to get the most from your car, and understand when it's not behaving.