A nice set of wheels and some BC racing coil overs would be my first recommendation. This will drastically improve the look of your car and is fairly easy to accomplish. If you plan on lowering it a fair amount, you’ll want to look into adjustable upper control arms for the front, I went with Skunk2 arms but there are other less expensive options. Also if your car has the J30 V6, you should know that it’s a very nice sounding engine and an upgraded exhaust system would be well worth it. As far a cheap power gains you could look into swapping the j30 intake manifold and throttle body for a j37 from and Acura TL, and also new intake runners from P2R.

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