The Spectre chrome intake tube combines two 3 inch intake tubes into one 3 inch tube. The 3 inch Y shaped intake tube is triple chrome plated with an ABS resin co-polymer on the inside that insulates the intake tract from heat. This tube is not designed for turbo-charged/supercharged engines. This product is not C.A.R.B. exempt. Products that are not C.A.R.B. exempt are legal in most states, but may not be used in California or states with similar emissions control laws except on pre-1976 vehicles.