Jenvey Airbox To Lower Noise

[blandy 29]

Just wondering does anyone run a airbox with throttle bodies. Hearing my car on track (someone else driving) I think it's pretty clear I'm going to struggle anywhere with a drive by limit - the noise of it on full chat from the front is ridiculous. As much as I love it I just know if I go anywhere with a reasonably tight limit I'll have no chance,

 

So looking into options and the obvious choice is a airbox.

 

Question is do they make a huge difference?

 

Do they have a negative/positive effect on power?

 

Also I see some can encorporate a sausage filter in the box and some will run to a cone filter on the end of the intake tubing? Again which is the way to go?

[jackherer 543]

My 205 used to have a Reverie airbox that silenced it to the level of a standard inlet manifold so they certainly make a difference.

[johniban 59 1 Cars]

Is the drivebye limit test taken at wide open throttle?