Anyone else install a K&N and now have a loud whistle with startup?
http://www.youtube.com/watch?v=aC3vPQlVZG4

 

I installed a K&N, didnt notice a whistle though.

 

Not me... Are you on stock charge piping?

 

could it be a vac leak? tiny opening in the coupler?

 

If you're airbox lid is tight you may want to examine the braided steel "breather hose" attached to intake tube to see if it's still "intact".

 

Where is the whistle coming from?

 

vid?

 

not me either.

 

airbox is tight, I am on stock charge piping, it about 30 degrees f here..and im holding around 13lbs of boost..I will take a vid since this doesnt seem normal, i might not get to it today tho.

 

yeah I have a K&N drop in but no whistle.

 

i have a hahn cold air and it makes a loud whistle/shhhhhhh sound on a cold start when it like 30 degrees and lower, i'll try and video it tomarrow and compare.

 

I know allot of the catless downpipe cars get a whistle at idle.

 

Lulz! That's me when I open up my E-Cutout.

 

does anyone on this site besides a few of us know how to troubleshoot problems? dont know how u can ever fix anything without learning how to do it. troubleshooting 101. put ur stock filter back in and see if it goes away, if so, problem is with the filter or how u installed it, if not, problem is somewhere else.

 

No Whistle Here!

 

Bubb Rubb approves:


http://www.youtube.com/watch?v=lVJTJpfknSc


Anyways, is it causing performance issues?

 

I can't find where the sound is coming from, it started to do this right b4 i changed my air filter, I went from stock to K&N...this didnt seem to make the problem worse, only louder...

Alot more pronounced the colder the weather is...today was about 40 degress, and engine was still a little warm from this morning.

http://www.youtube.com/watch?v=aC3vPQlVZG4

 

Yeah - I've got KN and airbox mod and mine makes a shhhhhhhhh sucking noise for about 30 seconds after ignition.

 

^... winner winner chicken dinner..... yup i would say its just the high flow rate of the filter at high suction from warm up cycle, my hahn cai is REALY loud on cold start.

 

Thought so, sounds pretty normal once the car is warmed up...thanks guys

 

Granted it doesn't get as cold as where you guys live but I to have the K&N airfilter with the stock airbox mod and on the few below 30 degree days we have had, I have not heard this or anything near it.

 

might have something to do with humidity/altitude, i only get it on cold starts in cold weather.

 

I live across town from you and I get the noise no matter the temp. I stuck my ear down in there and it is definitely a sucking sound coming from the snorkel that goes into the air box. It disappears as soon as the rpm's drop after the car warms up.

 

That is normal. What you are hearing is the turbo sucking in air.

 

If this is normal I wonder why mine doesn't do this?