I don't know but I'm now getting between 19 and 21 mpg, and notice a little more of a boost off the launch. Could be the placibo effect but that's what I see. The gutsier feeling on launch could be just the fact it lets more air in over stock at slow speeds where it's harder for the engine to suck it in. Either way thanks all for the opinions


Parakeet

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Oh MAN I got NATURE on my Jeep.
05 KJ Renny that took the bad economy bullet

89 XJ that thinks tax time is Christmas

I will have another KJ I promise.