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It depends on which CAI you buy. Some are "no tune required" they just have an open element filter like on a C&L or Steeda. The inlet tube is the same dimensions as a stock inlet.
tuner is needed. its too bad they are way way overpriced. you can get an iphone for 99 that is 300 times more powerful then the sct3 or touchscreen sct99. the tuners got us by the *****.
When you buy a cell phone with a contract, most of the hardware cost is subsidized by the service provider due to the fact you'll be spending at least $720 a year on service. Try buying a brand new iPhone without a contract.
The cost of an SCT hand held programmer includes the cost of research, development, and vehicle/device support.
