cjrdriven: if you do enough searching on google or on here someone did post gains from a M with a CAI b4 and after, then did one with an exhaust b4 and after, then did both together and showed that the gains went down.
Sometimes when people on here mention something it's not always false. Another thing to add just like hugedude is in the process of doing (CAI + EX + Re-Tune) is the best way to go if you have UpRev already otherwise get everything and then get it tuned once.
