Reviews for Jet Performance 62153 Performance Powr-Flo Throttle Body Spacer for 07-11 Jeep Wrangler JK with 3.8L Engine

I was not sure about this product when I purchased it but thought for $60 I would give it a try. My 2008 JKU was a little too sluggish after installing 35" tires and I wanted to get a little bit more pep out of it. At the time I installed this I also had a CAI and an axle back exhaust modification. My experience has been that there is a subtle improvement. I can hear the whine that the spacer produces at about 3k RPM and higher. The Jeep does feel a touch more responsive at above 3k RPM but it is subtle. I do not think I am feeling anything below that.