my99, fitted a hybrid fmic, but it whistles terribly at about 30mph.
getting embaressing about town!
any ideas?

I know that another 99 suffers the same but not sure its as loud.

 

Mine whistles slightly not loud enough for padestrians to hear (i hope) thought it was the mesh that was making the noise, as it never made the noise prior to adding the mesh.

 

Jim Litten's (MY99) does the same also, mine (MY98) does not.

<strikes match>
Perhaps some of us are just better at fitting them than others
<retires to safe distance>

Andrew...

 

Hmmm thats strange - mine don't whistle either (MY96)

Cheers

 

Who still has their undertrays in place?

 

Mines removed due to having headers fitted

Cheers

 

Could it be the dump valve whistling ???

 

Mine used to...but has now stopped itself...I used to think it was air going down the Scoop....

 

mine definately whistles like Andys - up until about 30 and then road noise / wind gets too much to hear it .


Sam - you might need to clean yours out a bit

 

seems to be the 99's that suffer most.

I fitted masking tape to seal any gaps between bumper and cooler and its better, still got to seal along the top (where number plate once was).
will report back with results.

 

If you just nail it every where you can't hear it its gone at 50, having been playing with gaffer tape the last few times out I think its to do with the shape of the lower part of the bumper directing air around where the pipe work comes up to the end tanks as I've nearly eliminated it.

 

Jim,
be sure to take a few pics to help out us others with what works in reducing it and what doesnt, my front bumper looks like an airfix kit at the moment with all the bloodt gaffer tape

 

So your all running with the undertray removed?

Just wondering if it could be causing a pulsing/whistle due to a restriction of airflow.

 

no undertray here Steven, long gone when headers were fitted

Andy

 

where have you fitted the number plate ? mine whistles due to the plate location .

 

my number plate is located inside the cabin on the dash.
the mounting is still in place for now though.

 

my plate is located with 2 right angled ally brackets

 

Plate needs to 'fixed' to the front of the car.

Guess its easy to accidently cover up the plate as you go past cameras with the plate on the dash

Bob

 

actually, I removed the number plate mounting and it has quietened down the whistling to a certain extent.
I think next I will make up a "slam panel" to fit underneath as the cooler protrudes below the bumper and it may be adding to the noise.

not quite there but getting a lot better.
Fantastic bit of kit as well, can really feel the inlet side pipe is markedly colder than the outlet

 

do you have a front spoiler?

 

std. Bumper Micky