1231ChaseB
Well-known member
Hi All ! I have a Duramax diesel and am thinking of putting an K&N air filter on it and was wondering if their worth the extra money and if they help with performance ????
chaseb
chaseb
BOY Chaseb you are going to get a lot of " expert " opinions on this topic both ways. All I can say is I have used them for many years and they have worked for me with out any problems and yes they appear to have improved the mpg. I have had them on everything from a motorhome to a Smart car. My Duramax has had one on it from the day I picked it up. Listen too all the post and the pros and cons then make up your mind.Hi All ! I have a Duramax diesel and am thinking of putting an K&N air filter on it and was wondering if their worth the extra money and if they help with performance ????
chaseb
K&N air filters, cold air intakes..big exhaust systems..if it was that easy to gain horsepower the manufacturers would do all of this from the factory..Don't waste your money on something that some believe might work..others do not. I'm sticking with the proven factory systems and keeping my warranty intact..Don
This. K&N Waste of money. Really screws MAF sensors. The DMAX stock filters best you can get. IMO.On the Duramax forum there is a ton of information on aftermarket add ons. I did some reading a couple of years ago and they supposedly had an independent test on air filters and flow and how each brand performed. It was determined that the factory Delco filter was the best bang for your buck. I also remember reading something about the possibility of using too much oil on K & N's causing potential issues.
HERE is a link to the discussion
Hi All ! I have a Duramax diesel and am thinking of putting an K&N air filter on it and was wondering if their worth the extra money and if they help with performance ????
chaseb
You ask an interesting question. When I owned a motorhome with a Cat engine, I asked Caterpillar what they thought about K&N air filters and the their response was that they would not recommend them because they did not filter the air to Caterpillar specifications and therefore their warranty would in question. So rather than argue with Caterpillar, I chose not to install the K&N filter and stuck with the paper filters which Caterpillar claims do a better job to keep the air to the engine cleaner. I figure Cat knew more than I when it comes to engines.
K&N air filters, cold air intakes..big exhaust systems..if it was that easy to gain horsepower the manufacturers would do all of this from the factory..Don't waste your money on something that some believe might work..others do not. I'm sticking with the proven factory systems and keeping my warranty intact..Don
Been there done that.
In prep for the big trailer I did a lot of changes. So I drank some more KA and ordered up a Banks tuner, turbo back exhaust and intake with the cold air intake option.
I saw no improvement in mileage or exhaust temps and had a noticeable drone at highway speeds. I did have some fun though on level 6.