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When it comes time to replace the clutch on your Focus ST, an opportunity arises to kill a few birds with one dropped transmission. Not everyone NEEDS an upgraded LSD, but will an upgraded differential give your car the potential to handle better? Yes. The internet loves to argue about understeer and necessity when thinking about upgrading the diff, but the fact is: better differential = better grip, and grip is good (if you know how to use it).

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.

With any turbocharged car, you have to cool down the air after it gets compressed in the turbo and before it reaches the engine. With very few exceptions, the majority of turbocharged vehicles, including the 10th Gen Civic 1.5T and Type R models, use an air-to-air intercooler to get the job done. Intercooler placement is important so it receives a cooler sample of air to transfer the heat to: Both Civic models use a front mounted intercooler, which is ideal. So why would you need to upgrade and what do you gain from it? 4 Great Reasons to Buy an Intercooler For Your 10th Gen Turbo Civic