I have a 2011 Wrangler Unlimited Sport. I got a K&N cold air intake kit for Christmas. Once the kids were done opening all their presents, I jumped on installing it. This is my first mod on my Jeep. The install went without any problems.

My Jeep now has a nice deeper growl at full throttle. Seat of the pants, it seems to have a little more power. I did notice something strange. When I am in park, the engine wont rev above 2500 RPM. It seems like it is in limp mode. It revs, then the power cuts out. When I put it into gear, everything seems fine while I am driving. Any ideas?

 

Auto or manual?

 

Sorry, forgot to include that important pice of info. It's an automatic.

 

So does anyone have any ideas?

 

It seems that this is build date and likely PCM revision date dependent. I wouldn't sweat it, as nothing wrong with having a N/P rev limiter.

 

Did you disconnect the battery to let the computer reset when you put it on. I just put mine on like 2 weeks ago but I dont have that issue.

 

I didn't disconnect the battery when I did mine and have had no issues

 

I did disconnect the battery throughout the entire install process, which the instructions said should be done. I figured it would be necessary for the computer to adjust to the different air flow. It still seems to be rev-limited while in park, but runs beautifully once I'm in gear and moving.

 

Mine is an 07' and the K&N, but I had no issues and did disconnect the battery prior to install.I would, which I am sure you have done, make sure you didn't dislodge a connection somewhere. Sorry about your frustration.