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I have a Volant CAI. Low RPM pull was close to stock, but mid and top RPM power has an increase. I didn't go to the track to test before and after. But I did go on a marked off stretch of road and tried it before 2 times and after more than 2 times. The first thing I could tell is it shift faster from one gear to the next. Top speed was 3mph faster. Gas milage, I can't tell because of the new found fun with the sound comming from under the hood. Any body puts one of these on, you will never take it off. The engine sound like it means business. And I'am talking with stock Exhaust! I'am reading lots of post trying to figure out what Exhaust to install. I'am not in a hurry right now. Believe me, normal driving, the engine sounds stock, but when you step on it, there is a Loud sound that comes from the front of my truck like a beast of a BIG muscle car. And my co-workers said when i step on the gas that truck is loud and mean from outside.
07 5.7 DC TRD OFF ROAD PKG. RUNNING BOARDS, TP TIP,CHROME ACC. KIT VOLANT CAI.
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