Cadillac V Series This section is for discussion about the performance minded CTS-V, STS-V, and XLR-V.

K&N Air Filters

Old 06-13-2008, 05:58 PM
Thread Starter
Join Date: Mar 2008
Posts: 5
Default K&N Air Filters

I have a 2008 STS V6 that I have owned about three months. I read all the hype about K&N air filters, so I thought what the heck I'll try one. I don't know about increased HP but my highway mileage went from 25 MPG to 27 MPG - same 400 mile trip, same speeds etc. I am now a true believer. Best $50 I ever spent!. BTW a truly great car; my other one is a 92 STS.
Old 06-30-2008, 11:58 AM
Join Date: Mar 2008
Posts: 15
Default RE: K&N Air Filters

Did you buy a paper filter replacement (drop-in) or a cold air intake (cone)? I've been considering the cold air intake. Had the drop-in filters in the past with mixed results over time.
Old 06-30-2008, 12:41 PM
stomper's Avatar
Tech Certified Members
Join Date: Jun 2007
Posts: 2,701
Default RE: K&N Air Filters

for my Caddies, I use the K&N that fit where the standard filter used to be, but the Allante is already a cold intake filter ..
for the Stang, I did mod the intake to make it cold intake .. the cone.
both the square and the cone are built the same way .. as far as i can tell

i also do the unthinkable .. soak them in solvent now and then .. then spray them with WD40.
NO, i havent had any more carbon build up in the trhootle intakes thatn i had before.

for the 4x4, i stay with the old paper fitler .. too much dust, sand, etc ...

Old 07-04-2008, 01:26 PM
Thread Starter
Join Date: Mar 2008
Posts: 5
Default RE: K&N Air Filters

It was a drop in filter. I am very happy with it.
Old 10-29-2008, 10:22 AM
Join Date: Oct 2008
Posts: 5
Default RE: K&N Air Filters

2+ mpg. Thats good to hear. I've put K&Ns in all my cars, and its always made an improvement in performance and economy.

Related Topics
Thread Starter
Last Post
Cadillac Deville
02-12-2010 01:24 PM
smoken gun
Off Topic
03-30-2008 05:57 PM
Aftermarket Cadillac Modifications
08-11-2007 03:14 PM
Cadillac STS
12-07-2006 02:05 AM
Vendors Area
06-15-2005 03:22 PM

Thread Tools
Search this Thread
Quick Reply: K&N Air Filters

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.