K&N Performance Cold Air Intake System: Easy Installation, Engineered to Maximize Airflow, Boost Horsepower & Torque, 57-6015

I bought a K&N Intake for my 2006 Nissan Altima SE and after a couple months I had some engine trouble (NOT related to the air intake!).  The dealership noted on my service receipt that a fitting was broken on my K&N and they would fix it for $159.00.  I emailed K&N and within 24 hours they responded and shipped the replacement fitting FREE OF CHARGE.  This company makes great products and their customer service is EXCELLENT.  I would recommend purchasing from K&N, not only for their superior quality products, but also their support during and after the sale.

           I recently purchased a K&N cold-air intake for my 2005 3.5l Nissan Maxima.  I have been running (for over 6 years) a (brand removed) cold-air intake but tired of having to remove / re-install the OEM for SMOG inspections.  The K&N is CARB approved and was reasonably priced and was reasonably easy to install.  (I might suggest a common view angle to all pictures taken at the same vantage point in all customer related install papers……it would dramatically lessen having to re-orient for each install particular).            Upon completion of the installation I took the car for a drive……anxious to test the new intake.  To my surprise……the response, acceleration, and shortness to top-end of the range significantly out shined the (brand removed).  After a few days I also note a 2 MPG increase around town and 4 MPG highway.  I can even detect the car’s desire to step into the torque/power band with minimal gas applied to the accelerator…..essentially simple driving and shifting will promote a step into that increased band!  I don’t know if it is the shortness of the tube or the location of the MAF, but whatever it is, I am absolutely impressed.            I’m a 65 year old male and I do not dote on sticking my foot into the accelerator routinely.  I DO however, enjoy quick and lasting response during acceleration.  The K&N has shown itself to be a Star performer.  I can’t thank you enough.  My highest recommend going forward………

Should have done this years ago!!!! Work load on the engine dramatically decreases and power is much more readily available. Zero overheating issues since.

Installed on 2007 Maxima... Dramatic change in acceleration and sound. OEM mufflers replaced with [brand] resonators. Sounds exactly like an Infinit G37s now, and just as quick.

Excellent product. Significant improvement in sound and performance. Also looks very cool installed.

Love the quick response in acceleration.