I have a 96 3.5 and I recently removed the air restrictor cone in the intake tube. I experienced a louder, slightly faster shifting ride but my idle, which is usually a little below 1, is now a little eratic. It raced and then settled intermittently until I took the tube off again and made sure to make a complete seal with the other ends. It fixed the problem a little but the idle is still slightly irregular. If anyone has any idea what I could do to fix it let me know. Its not that big of a problem, just a little unsettleing.
96 Intrepid ES 3.5L