An internal combustion engine uses oxygen just as fires require oxygen to keep aflame. There is no internal oxygen tank in a car for this purpose, as that wouldn’t be very efficient. Instead, Scion XD vehicle manufacturers equip cars with intakes that bring air inside to the Scion XD engine directly. Scion XD Air intakes are designed to provide the least inhibited route possible for the air to reach from outside the Scion XD car all the way to the engine, though stock versions aren’t always the most effective.
For that reason, many car owners turn to aftermarket Scion XD air intakes to increase the effectiveness and efficiency of their vehicles’ intake capacity. The greater the amount of oxygen supplied to the engine, the more power it can produce. Scion XD Cold air has more oxygen, for instance, so Scion XD cold air intakes have become popular Scion XD intake upgrades. Other upgrade types focus more on greater Scion XD air intake capacity period, but either way, you’ll end up with a better performing engine using an upgraded Scion XD air intake system in your car.
Matthew B. - (Austin, TX)
Best upgrade for my Sierra. I am very pleased with the quality and sound. I have received my part just in 4-5 days after I placed the order. Thanks Wes!
Jacob Finley - (St Louis)
Pretty good quality finish, great fit, weave is okay, and it's the only option out there that I know of which explains the high price (-1 star).
Willy F. - (Bentonville, AR)
very nice quality shift knob. thx
I have the full H&R set up on my car and I love the quality of the parts. I have sold my Eibach springs to get the H&R coilover and I know my decision is right! Thanks Ilovebodykits
great cat back system with amazing sound
A Cooper - (Victorville, CA)
Headlights flickered.. had to buy relay harness.. other than that they work great.
42 reviews 4.5 out of 5 stars