Yes any performance gain probably depends in part upon how restrictive the stock filter is that the KN replaces.
On Sun, Aug 28, 2016 at 3:36 PM, OK Don via Mercedes <mercedes@okiebenz.com> wrote: > I read a report years ago about K&N outfitting the big trucks in an open > pit mine with their filters. The mine threw them out after having to > rebuild most of the engines due to cylinder wear from all the dirt that was > getting in. > > On Sun, Aug 28, 2016 at 2:49 PM, Curt Raymond via Mercedes < > mercedes@okiebenz.com> wrote: > > > On late model TDIs they ruin MAF sensors. Even a very slight over oiling > > kills a $150+ sensor. > > I ran one in my Dakota for awhile, I could see no real performance or > > economy gain. I'd like to try blind tests to see if somebody could tell. > > Kid next door has a Mustang, I wonder if he'd be into the idea. > > Curt > > > > Sent from Yahoo Mail on Android > > > > On Sun, Aug 28, 2016 at 11:00 AM, Karl Wittnebel via Mercedes< > > mercedes@okiebenz.com> wrote: > > > > I had the one that fit inside the stock air box. Anything providing > > higher > > > ambient air pressure at the inlet to the turbo is going to provide > better > > > performance. This is why all those turbocharged drag cars run without > air > > > cleaners. If you try that filter and drive with your foot on the floor > > you > > > will notice the difference. > > > > > > > > > I think K&N filters are garbage, but they do enhance performance at the > > > expense of less filtration. > > > > > > > On Aug 27, 2016 3:07 PM, "fmiser via Mercedes" <mercedes@okiebenz.com> > > > wrote: > > > > > >> > Karl wrote: > > >> > > > >> > What you're saying about ambient inlet pressure making no > > >> > difference on a turbocharged engine is not quite correct. > > >> > > >> > ...the turbo operates on a pressure ratio. The lower the ambient > > >> > pressure at the turbo inlet, the longer it takes for the turbo to > > >> > spool, because it is feeding the engine less air at each rpm than > > >> > it otherwise would. > > >> > > >> Ah! You are talking about rapid increase in engine RPM. I was > > >> referring to power output - sustained. > > >> > > >> So, if you man "it takes longer for the turbo to build pressure" > > >> rather than "it takes longer for the turbo to spool" - I fully > > >> agree. > > >> > > >> > So a less restrictive filter results in faster spool. I also > > >> > found that top end performance was improved, with a higher max > > >> > rpm at max throttle. Is isn't even subtle. Taking off from a > > >> > stoplight is a different experience. > > >> > > >> Hmm. That doesn't match my experience with various diesel turbo > > >> engines. But if your experiences were otherwise, who am I to argue! > > >> > > >> > > >> > > >> _______________________________________ > > >> http://www.okiebenz.com > > >> > > >> To search list archives http://www.okiebenz.com/archive/ > > >> > > >> To Unsubscribe or change delivery options go to: > > >> http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > >> > > >> > > _______________________________________ > > http://www.okiebenz.com > > > > To search list archives http://www.okiebenz.com/archive/ > > > > To Unsubscribe or change delivery options go to: > > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > > > > > _______________________________________ > > http://www.okiebenz.com > > > > To search list archives http://www.okiebenz.com/archive/ > > > > To Unsubscribe or change delivery options go to: > > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > > > > > > -- > OK Don > > *“Travel is fatal to prejudice, bigotry and narrow-mindedness, and many of > our people need it sorely on these accounts.”* – Mark Twain > > "There are three kinds of men: The ones that learns by reading. The few who > learn by observation. The rest of them have to pee on the electric fence > for themselves." > > WILL ROGERS, *The Manly Wisdom of Will Rogers* > 2013 F150, 18 mpg > 2012 Passat TDI DSG, 44 mpg > 1957 C182A, 12 mpg - but at 150 mph! > _______________________________________ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
