Welcome back Subaru WRX fans!
Today I thought I would discuss some easy Subaru WRX Exhaust upgrades that can net you some real usable power.
As I'm sure you already know, improving the breathablilty of any WRX flat four engine you will get more power. The WRX engine needs to be able to get rid of the spent exhaust as quickly and as efficeintly as posssible and by upgrading the stock WRX exhaust system with an aftermarket WRX exhaust kit, you can be confident that you have accomplished this goal.
The stock WRX exhaust system is comprised of the downpipe, the front-mid pipe, the rear-mid pipe and the muffler to outlet section. You have the option of upgrading each piece individualy or swapping out the entire WRX exhaust system with an aftermarket bolt-on kit.
WRX Muffler
Probably the first item most people will want to swap out is the stock WRX muffler itself. Since the Subaru WRX is a turbo, flat-four engined car, the vehicle has a great unique sound to begin with. By swapping in an aftermarket WRX muffler, you will get two great benefits with one simple upagrade, a better exhaust note and a few more ponies. Not bad, but we can do better.
Cat-Back WRX Exhaust Systems
Many companies offer aftermarket WRX performance "Cat-Back" WRX exhaust systems. "Cat-back," meaning from the catalytic converter back to the WRX exhaust outlet. Since the Subaru WRX technically has three catalytic converters - one before
the turbo and two after - the cat-back system would replace the WRX exhaust system from the rear/last catalytic converter to the outlet including the muffler. These systems include all installation hardware and require no welding or cutting. Simply unbolt the stock WRX exhaust pieces and install the new aftermarket pieces.
Just imagine, in one afternoon, your WRX exhaust system could be transformed from a stock wheezer to a fire breathing banshee! Now your talking.
Complete WRX Exhaust System Replacement
The ultimate upgrade you can make to your WRX's exhaust system would be to repalce the entire system from the engine all the way back to the outlet. This type of WRX exhaust upgrade would be much more involved and may require the expertise of a WRX performace shop. However, I can't imagine you not being happy with the results.
As you can see, there are several options as far as upgrading the Subaru WRX exhaust system. Next time I will discuss the intake side of the Subaru WRX turbo flat-four engine. Happy driving!
Saturday, February 23, 2008
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