What is in the box?
Anyone use BMC or K&N?
Any improvement?

 

factory paper filter, I ran a BMC cloth on my '04 and '07 didnt really notice any perf difference, the intake noise was "improved"

 

I use factory. Mike

 

I think I have a spongy filter in mine from the factory.

 

It is surprising to see so few that use an air filter that allows better air intake into the engine and know so many that have a muffler bypass, including myself ( I did it for the sound)....
I will however put a BMC filter in the Original airbox and I will report if I notice any change in performance

 

i was "told" that most air filter will not be much better than oem, if at all.

same goes with bypass without specific engine dyno tuning. but the sound is worth a few hp degradation. i am with you on that one.

 

cat and muffler bypass! Straight pipe baby!

 

Oh, I have the BMC btw...

 

Ya, same same on my 11' 3RS too.


-Troy

 

tried it.
110db, can't even pass sound at infineon forget LS.
after 3 laps, i trailered the car to mechanic 2 hours way.
swap oem back on
trailer'd it back to infineon and the day continues.

can't tell you how fast the trailer was going

 

I use kn intake kit and have dyno sheets that show a gain but 911slow says no go and bmc is superior...

 

I have confirmed information that 911slow says that factory airbox with a quality panel filter is superior to any filter type that doesn't take advantage of the venturi effect of the oem boxes end intake “ring” and of the ramair effect of the oem boxes lid scoops.. also 911slow still awaits PJS's newer dyno results in an independant dyno of the KN's cone filter VS. oem airbox equipped with a K&N or BMC panel filter

John for 911slow

 

WOW! 110db?

How about cat bypasses and gutted mufflers?

 

108 if u lift : (. Neway it sounds awful. I rather be at chucky cheese's on it's busiest days. Mike ps- not a fan of loud noises when it doesn't do crap.

 

mr slow

winter project...