http://www.airaid.com/310-618_jeep.asp

Does this thing work, and how bad is the whistle? If I can pick up and extra 1-2mpg I'd be really happy, but don't want to listen to a whine forever and a day.

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"If you would not be forgotten, as soon as you are dead & rotten, either write things worth reading, or do things worth writing."-Ben Franklin

"Once a Marine, Always a Marine!"

I've read several magazine articles on throttle body spacers. Simple answer: none have any measurable affect on mpgs or HP/torque, regardless of the manufacturer's claims. They're junk science, as are the "fan-blade" type inserts (Tornado Air) for the air intake tubes.

The cold air intake tubes, however, do free up some HP & ft-lbs, but tend to be a little noisy or whiny at full throttle. Me, I like the noise!

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Thanks Mark. Where or which one, cold air intake, works for you?

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"If you would not be forgotten, as soon as you are dead & rotten, either write things worth reading, or do things worth writing."-Ben Franklin

"Once a Marine, Always a Marine!"