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
