Well I have a 06 Frontier LE King Cab and was wondering if anyone has done exhaust or intake on their truck with the 4.0 in it yet? I am looking to do either a magnaflow or flowmaster exhaust on it, havnt decided yet on what to do since I really havnt heard many out there. Also which cold air intake should I do, I am looking for the most hp and torque gain I can get out of those 2 things. So please if anyone has any information or have any suggestions please post em. Thanks.

 

Alright well I was looking around and found a cold air intake that adds up to 18hp and 40ft lbs of torque that is the best one i found out there right now plus a throttle body spacer.