f150man3.5

Best run of the night was a 14.49@93.37. Boost launced in 4wd @ 2000 rpm, this run was hot lapped. Made 9 passes worst run was 14.71@93.56. Best 60 ft was 1.97. Best 2wd time of 14.5@93.97 which was my first run of the night

bigblockttop

Nice runs! Especially nice 60ft. Is this stock? And what gear you have?

f150man3.5

k&n drop in filter 1/4 tank of 91 it has the 3.73

jcain

must have a hell of a tire or a **** ton of vht to cut that 60 with 2wd

f150man3.5

stock goodyears, the 1.97 was 4wd best 2wd was a 2.05. exellent weather conditions too

Largefarva

Heads up about the k&n....it lets tiny dust particles through until enough have been collected in the filter to stop letting them pass. Effectively sand blasting your turbos etc. might want to go with another filter. I can't confirm this myself...just what I've seen several people warning ecoboost owners concerning using k&n air filters.

engineermike

+1. This has been tested and proven. I would not use a K&N filter on anything you put many miles on.

f150man3.5

dont want to b a dink but i put 160.000km(100,000 miles) on my last k&n filter in my 99 grand prix, never had any issues. Sold it to a local kid and @ that time had 215,000kms on it 2 years ago, and he is still driving it to this day with the same filter. so with all that this thread wasnt about k&n filters, and everybody is entitled to ther own prefrences

engineermike

It is a fact that the K&N gauze filters have a larger micron rating than paper. This, by definition, lets more dirt through. It is also a fact that this dirt is abrasive, which shortens ring and bore life. And finally, it has been proven that the dirt makes its way into the oil, which shortens bearing life. One car making it 130k miles using a K&N doesn't prove much, for a number of reasons.

Furthermore, you didn't gain any hp with it, so what are you sacrificing longevity to gain?

Nice runs BTW.

kent johnson

My dad put 450,000 miles on his 98 f150 4.6 with a drop in kn, walmart brand synthetic every 10,000 and never touched the motor. It was filtering enough obviously, but i have heard this debate.