This needs to be in a kit with the throttle body spacer as the two go toggether and need each other to operate efficiently. I bought the spacer and had a bogging issue, bought the intake and the two together was a night and day difference. More low end, better throttle response, mid range is fantastic. Must buy together to benefit.
If you're going to buy this than buy the intake. Noticed a difference with just the throttle body spacer but had a bog to it. I ordered the intake and the two together are a drastic difference better low and definitely mid range response. Haven't noticed any in gas mileage. But do buy the set. I have full after market dual exhaust and k&n filter with factory air box.