Reviews for AIRAID 310-510 PowerAid Throttle Body Spacer for 91-06 Jeep Wrangler YJ, TJ, Unlimited, Cherokee XJ, Comanche MJ & Grand Cherokee ZJ, WJ with 4.0L I6 Engine

Easy install, no immediate "WOW" effect but my ODM monitoring app on my phone shows me getting around 17- 18 MPG which is up from my 14 to 15 MPG on the same daily trips so that is a good improvement.

Not sure how much it helps, I DID install it with the K&N Fuel Injection Performance Kit but the combination of the two seem to be giving me about 4MPG more

Easy install and made a difference!

Easy bolt-on upgrade, also helps off-set rpm loss when going to 33"s. Hour install at the most, 30 min if you don't remove your air intake.

Installed as instructions said drove for three weeks and noticed my fuel milage went down it felt as though I lost power feels like I am having to use more throttle to get going and maintain speeds. I removed it and my problems went away and I haven't had to visit the Gas station as much without it as with it. This product made things worse waste of money.

I ordered one for my v8 Challenger and it was pretty cool. Made a cool whistling noise, seemed to effect the power output. The one I ordered for my wrangler does nothing. I think the gas mileage may have gotten worse.