K & N

T

tomwilson74

· Registered

Joined May 6, 2004

·

146 Posts

Discussion starter · #1 · Sep 28, 2009

Only show this user

Just bought a used K & N air intake off ebay, I hope I get a few extra horses out of my 4.7 now.

 

midnite

· Doesnt Afraid of Anything

Joined May 28, 2007

·

3,150 Posts

#2 · Sep 29, 2009

Only show this user

and you shalll!!!!!! it will sound great too!!!!! plus a few mpg depending on your foot weight!

 

P

Primus

· I hate you people.

Joined Apr 30, 2009

·

2,626 Posts

#3 · Sep 29, 2009

Only show this user

Do you have just the intake and nothing else? If so, you might be disappointed. Combined with a less restrictive exhaust, programmer, new spark plugs, and full synthetic drive line fluids, then you will see a huge difference over stock.

 

T

tomwilson74

· Registered

Joined May 6, 2004

·

146 Posts

Discussion starter · #4 · Sep 29, 2009

Only show this user

I have a less restrictive exhaust system and plan on new plugs. Which plugs are recommended? I've heard about putting synthetic in. Should I do all three-differential, tranny and motor oil?

 

P

Primus

· I hate you people.

Joined Apr 30, 2009

·

2,626 Posts

#5 · Sep 30, 2009

Only show this user

Yes, do all three. I went out of town for the Labor Day weekend and I had just changed my drive line fluids over to synthetic. Trip down wasn't special, averaged 17 mpg on a 5 hr. trip because of parking lot traffic going to the same exit I was going to. But, the return trip netted me 19.995 mpg, technically 20 mpg and I think my tires were a little underinflated, maybe 1 psi(just checked my tires pressure this weekend and it was between 2-4 psi under).
As for spark plugs, just stay away from Bosch's, several on here have posted negative experience with their regular and +#'ds, some even having the tips break off on the +#'ds. For a regular style, go with the Autolite Double Platinums. For new design, go for the e3 DiamondFire's.