what's this this pipe for? Photo added now i know how!!!

S

synthedup

Senior member
 Rotherham
Hi guys, I'm planning on designing and building a carbon fibre intake (designed on a gruppe M) for my 2.0 facelift E85. Gruppe M don't make one for this engine.

One question I have of someone could help, does anyone know what the second smaller pipe is for that is attached to the standard air box?

DSC_0066_zps6eb72c05.jpg

Many thanks simon
 
Mangozac said:
Looks like a resonator...
Click to expand...
Agreed. Not an absolutely required element, but messing with it will change the sound and possibly the performance. The entire intake system is a tuned resonant system for maximum efficient performance.
 
bcworkz said:
Mangozac said:
Looks like a resonator...
Click to expand...
Agreed. Not an absolutely required element, but messing with it will change the sound and possibly the performance. The entire intake system is a tuned resonant system for maximum efficient performance.
Click to expand...


Thanks guys, Iv done some reading and some people are saying if this is disconnected it adds to the noise, ( a beefy grunt at high revs ), it doesn't effect the performance in a positive or negative way is what I am seeing.... has anyone done this? or know what happens when you do?
 
You can't hurt anything by removing it. As bcworkz said there is a chance you may actually lose some performance due to the tuning effect it provides, but I'd wager it's probably unlikely. If you're intending to do a new intake design anyway I wouldn't worry about it.
 
Mangozac said:
You can't hurt anything by removing it. As bcworkz said there is a chance you may actually lose some performance due to the tuning effect it provides, but I'd wager it's probably unlikely. If you're intending to do a new intake design anyway I wouldn't worry about it.
Click to expand...


Thanks,

Thats helpful, all I really wanted to know was if I should be designing this into the new air box, If it wont hurt anything I'll happily leave it out the design.
 
It's up to you really. When i said it could affect performance, I should have mentioned what ever gain the tuning effect is giving is very minor, not noticeable to a driver and probably barely measurable on an engine dyno. There could be some advantage to providing some sort of resonant chamber, perhaps with a diaphragm section to communicate the sound to the outside better. But acoustics are tricky. You are just as likely to make it worse as better. It'd be easier to just forget about it and do a straight intake IMO.
 
You must log in or register to reply here.
Back
Top Bottom