I have a K&N induction kit on my S2 but just wondered if i need a duct tube. The way i see it if i do put a duct tube the cold air that is sucked by the filter is only gonna get hot when it enters the turbo only for it to get cold again when it enters the intercooler. If i dont put a duct tube the hot air the filter sucks in is gonna stay hot when it goes through the turbo but goes cold when it goes through the intercooler. I was arguing the fact with a mate that theres no point of a cold air duct tube on a turbo car but would be needed on a normally aspirated engine. Am i right

 

if ya intercooler is doin its job then you dont need a duct tube!...but saying that alot of people use them,no harm in trying to help the intercooler!...seen peeps take out there headlight to help the cause too!

 

cone filters are shit mate,get a standard air box

 

imo cone filtes arent shit, they dont work well on a rr due to minimal air flow but out on the open road the air flow is more than sufficant, cold air is being pushed into the engine bay and hot air is escaping through the bonnet vents, best ducting to use is a mk3/4 heater hose as they are large diamiter and long enough to zip tie to the anti roll bar and go right up to the filter

 

Well said

CONE FILTERS ARE SHIT

 

[quote="T28 RST"]agree, keep std box on it,

 

Have ran with a filter and air box, I chose to keep the box, although when I go efi, it will be filter straight of the turbs

 

the reason k&n put air ducting in with ther 57i kits is not just to feed the filter with cold air it also acts as an air flow aid because k&n decided that the filter would not get enough air flow stuck behind the headlight! This is also the reason people remove there nearside headlights whilst running the quarter mile. I also agree with the guys who put that cone filters are shite, because a panel filter is much better at filtering out foreign matter and protecting the vital bits like your turbo! than a cone filter will ever do! The only things cone filters are good for are freeing up room under the bonnet, the noise they make and the looks they give. The extra power figures they are supposed to give are bollox most of the time aswell!

matt

 

Agreed with Matt500, my N/S headlamp was hardly ever on the car!

 

okay so i take it nobody likes cone filters here. gotta say though that theres not that much induction roar maybe because of the the metering head. cheers for your advice may just stick a large duct tube for airflow sake

 

Std airbox all day long, cut the front off the lid and bobs yer uncle. most RR's DO have high powere dffans you know, and still the same crappy ACT's

 

i like my induction kit!...you dont get hardly any chatter without it on mfi!...so im sticking with mine!....that and my alarm sounder is in the way of putting the air box back on so got no choice!

 

i get good chatter with 7psi and std airbox ner ner lol