Posted: Feb 22 2005 at 8:13am | IP Logged

Thanks for the reply. I was planning on just the replacement for now, if you can think of anything else to gain H.P. and gain M.P.G. please let me know. Thanks,

Posted: Feb 25 2005 at 2:16pm | IP Logged

K&N Air Filters ( Air Oiled Filters !!!!) Void Warranty !!!!

Good Morning, I was just ready to install a K&N Oiled Air filter and checked with the Thoroughbred Nissan.  The service manger states if your Titan comes in with a Check Air Flow fault code (Service Engine Lite On) with a K&N or any Oiled Filter the repair to the air sensor is NOT warranty covered. The intake air flow sensor cost $500.00 plus $170.00 for install and programming.

Sincerely,

Akoni

Posted: Feb 26 2005 at 11:53am | IP Logged

Here's my experience with K&N air filters. I used it straight out of the sealed bag so it wasn't over oiled.

When I used a K&N air filter in my Ranger my mileage dropped immediately from 17.5mpg to 16.5mpg. Over the next 6000 miles it dropped down to 13mpg. I removed and cleaned the mass air flow sensor and my mileage went up to 16.5mpg but dropped again over next 6000 miles. I bought a standard air filter, tossed the K&N and cleaned my mass air flow sensor, mileage went back to 17.5mpg and has stayed their ever since. It seems the oil on the K&N filter fouls the mass air flow sensor. I've heard of this on other cars as well, the local GM dealer won't even stock K&N filters, their service guys advise customers not to use them because they've has so much trouble.

I was mostly hoping for better gas mileage (big disapointment) because I really don't thing 2-4 more hp's is going to make a difference. If I can't haul a trailer with the hp that I have I probably won't be able to haul it with 2 more.