Hello,

Just recently installed these parts myself.

My question is am I suppose to hear a loud sucking sound after install?

And, there is an extra 1mm x 55mm bolt


Advance thanks

 

Anybody?

 

You should have used 3 M6 x 1mm x 55mm bolts for the row of 3 holes on top of the upper plenum closest to the front of the car. Check to make sure that your "extra" bolt is in fact an extra.

You shouldn't hear a loud sucking sound from the spacer installation. Do you happen to have a pop charger?...those are known to make a whistling sound.

Also, check for leaks. The most common mistake people make when installing the spacer is that the rubber ring around the oil filler cap gets pinched between the upper and lower plenum, preventing the two halves from sealing properly.

 

double check the back of the plenum to make sure u never missed a bolt. i recall there being a sort of hard to see hidden on towards the back somewhere

 

sucking noise is going to mean there is a leak

 

No sucking noise. Was a hose left off? can you tell where its coming from?

 

hello,

only mods are the Ztube and now the spacer.
the sound is like having a CAI installed, only happens when I depress the gas.

also checked re: the rubber ring on the oil cap. it was fine.

 

ALSO:

I dont have a check engine light on. if there was a leak wouldnt that light up.

advance thanks.

 

anybody else has an input re: this?

 

http://www.motordyneengineering.com/manual.pdf

look for the section marked "installing the new plenum bolts" make sure you have the correct size where you should

and read over the rest to ensure you did everything like you should have, ive never heard any sucking sounds until i had a pop charger

 

Sorry to bring this back to life but did you figure it out, I'm having the same problem

 

Hey guys, I also had just a stillen intake / z tube before installing my 5/16 iso thermal copper spacer. Same thing here, strange sucking/whistling sound almost like I'm boosted coming on around 2000-2500 RPM under load, wasn't there before, pretty loud, definitely sounds like a leak but I double checked everything. Idle is fine, car of course feels little more snappy but the sound is driving me nuts n making me concerned, in park when I rev you hear just the intake but in drive when I rev I hear that loud whistle / sucking sound, thinking about redoing everything from step 1 for peace of mind, anyone else have any input ??