Green panel filter - dump valve noise?
Can anyone let me know if this is normal or if I've cocked up?
Car is an MY00 and I recently fitted a Green panel filter to the standard airbox. Now when I'm driving along with the window open (and only when I've got the window open), I can hear the dump valve sneezing when I change gear. Which is nice
, but is it supposed to now be audible? Does a panel filter really make the difference between hearing the dv and not hearing the dv?
Also, for anyone who's fitted one of these, how many of the spacer lugs did you cut off?
Matt
Car is an MY00 and I recently fitted a Green panel filter to the standard airbox. Now when I'm driving along with the window open (and only when I've got the window open), I can hear the dump valve sneezing when I change gear. Which is nice
, but is it supposed to now be audible? Does a panel filter really make the difference between hearing the dv and not hearing the dv?Also, for anyone who's fitted one of these, how many of the spacer lugs did you cut off?
Matt
Originally Posted by SidewaysMatt
Bugger.
Anyone else before I really start worrying
Anyone else before I really start worrying

didn't notice any noise difference to the ITG i had in there, have you got a decat downpipe? coz that makes a fair bit of noise if it's twin dump/open neck.
can't for the life of me think if there was any difference with the std exhaust and the ITG, sorry. (oh, the joys of a std car before the modding bug bit
)
Sideways, my Green dropped in, no probs, my stock DV sounded just the same as before. are you SURE you have fitted it all back correctly, it is easy to mis-locate the bottom edge of the air box. If the clips were a real sod to snap over then the box might be gaping open. Then you would hear the DV operating into the box more pronounced.
Good luck!
911
Good luck!
911
Originally Posted by 911
Sideways, my Green dropped in, no probs, my stock DV sounded just the same as before. are you SURE you have fitted it all back correctly, it is easy to mis-locate the bottom edge of the air box. If the clips were a real sod to snap over then the box might be gaping open. Then you would hear the DV operating into the box more pronounced.
Good luck!
911
Good luck!
911
Hmm, wonder if the two are related...
Clean that MAF with a real soaking of brake/carb spray cleaner before you skip it!
Let it evaporate really well, then try again. Do not touch it with your greasy little fingers!
The air box is a sod, especially if everything is very cold and in flexible.
Good luck, try the simple bits first!
911
Let it evaporate really well, then try again. Do not touch it with your greasy little fingers!
The air box is a sod, especially if everything is very cold and in flexible.
Good luck, try the simple bits first!
911
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Originally Posted by 911
Clean that MAF with a real soaking of brake/carb spray cleaner before you skip it!
Let it evaporate really well, then try again. Do not touch it with your greasy little fingers!
The air box is a sod, especially if everything is very cold and in flexible.
Good luck, try the simple bits first!
911
Let it evaporate really well, then try again. Do not touch it with your greasy little fingers!
The air box is a sod, especially if everything is very cold and in flexible.
Good luck, try the simple bits first!
911
When that arrives tomorrow, I'll take the filter out and start again. Might also check DV and IC hoses in case any have split or something.
It is a bit strange cos I would have thought that if there was an air leak around the air box lid, then I would get a load of induction roar like having a cone filter. But I don't. It is just the DV noise. Does sound quite nice though
Originally Posted by RB5-107
I had the same panel filter and H&S downpipe/centre done on Saurday and I get the same wheezy noise.
Wouldn't worry m8 - sounds quite good actually
Wouldn't worry m8 - sounds quite good actually

Originally Posted by SidewaysMatt
Can anyone let me know if this is normal or if I've cocked up?
Car is an MY00 and I recently fitted a Green panel filter to the standard airbox. Now when I'm driving along with the window open (and only when I've got the window open), I can hear the dump valve sneezing when I change gear. Which is nice
, but is it supposed to now be audible? Does a panel filter really make the difference between hearing the dv and not hearing the dv?
Also, for anyone who's fitted one of these, how many of the spacer lugs did you cut off?
Matt
Car is an MY00 and I recently fitted a Green panel filter to the standard airbox. Now when I'm driving along with the window open (and only when I've got the window open), I can hear the dump valve sneezing when I change gear. Which is nice
, but is it supposed to now be audible? Does a panel filter really make the difference between hearing the dv and not hearing the dv?Also, for anyone who's fitted one of these, how many of the spacer lugs did you cut off?
Matt
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