Originally Posted by +fireamx
Can't speak for the SRT6, but it usually takes more than 20 hp to lower your 1/4 mile times by nearly 1/2 a second in a NA car, and that's what the Needswings CAI does.
Actually needswings only claims about 20hp gain on their single CAI if I remember correctly...
Generally, it's not the first 1/2 second you are trying to shave off your 1/4mile time that is hard... its trying to shave off that last 1/10 of a second in the 1/4 mile that gets quite costly and not quite as rewarding.