Motorsound intake
Thread Starter
Burning Brakes
Joined: Sep 2007
Posts: 867
Likes: 71
From: Orlando
Motorsound intake
Installed by the PO. Sounds pretty good, but I have a question about modifying it.
The interior portion of the intake horn seems to block a large section of the filter, or is it my imagination?
What ramifications are there to trimming the interior portion?
The interior portion of the intake horn seems to block a large section of the filter, or is it my imagination?
What ramifications are there to trimming the interior portion?
Rennlist Member
Joined: Apr 2012
Posts: 1,031
Likes: 10
Rennlist Member
Joined: Nov 2010
Posts: 925
Likes: 3
From: Charlotte, SC
I seriously doubt there was any performace improvement and as I said, no sound difference that I noticed...But like my muffers, it looked good on paper and "buttdyno" reported that I feel confident I did hurt performance. cold intake air=hp. non-obstructed free flow exhaust=hp
But my car already had the factory motor sound option....
But my car already had the factory motor sound option....
Trending Topics
Rennlist Stories
The Best Porsche Posts for Porsche Enthusiasts
Stunning Porsche 356A Super GT Speedster Auction Fails to Meet Reserve
Verdad Gallardo
Every Era of 911 Owner Explained in One Sentence
Verdad Gallardo
Thinking of Buying a Porsche? Do These 10 Things First
Joe Kucinski
Pixar Pals Turned Into 1-of-1 Porsches!
Michael S. Palmer
Theon Goes Full Carbon Fiber With Stunning New Build
Verdad Gallardo
Genius Porsche-Themed Gifts That'll Make Any Dad or Grad Smile
Joe Kucinski
10 Used Porsches Are Selling for Way Too Cheap
Joe Kucinski
Tuner Is Converting Porsche 911s Into Shooting Brakes
Verdad Gallardo
This Coachbuilt Creation Is A Modern Take on the Legendary Porsche 917
Verdad Gallardo
Instructor
Joined: Sep 2003
Posts: 230
Likes: 18
From: Berkshire, UK
Motorsound box does absolutely nothing to the performance, but does sound good - deeper induction roar, especially under hard acceleration. You can get exactly the same effect by drilling large (1" or more) holes in the air box cover. I've got a feeling there might be the outline of the holes on the inside of standard cover. The chrome intake pipe of the proper motorsound box also adds a nice touch though.
Rennlist Member
Joined: Sep 2009
Posts: 8,687
Likes: 785
From: Canada & the Alps
I have the Motorsound cover simply because the standard cover is not available separately; the one on the car wasn't that nicely drilled by someone in the past and I wanted to replace it for that reason.
Last edited by IXLR8; Jul 10, 2012 at 08:24 AM.
Rennlist Member
Joined: Nov 2010
Posts: 925
Likes: 3
From: Charlotte, SC
Correct. Fixed wing is needed. However the RS sintake scoop is made out of such cheap this plastic, trimming to fit standard decklid is an easy task, but kind of defeats the purpose at speed since your spoiler would be up, creating a gap to possibly suck in engine heat.
Thread Starter
Burning Brakes
Joined: Sep 2007
Posts: 867
Likes: 71
From: Orlando
Really looking at the internal trumpet of the cover. Post 7, item 3 see how it extends into the box? Compare the profile to the filter, #2, it seems to overlap the filter area quite a bit, and is pretty close to the filter.
Instructor
Joined: Aug 2009
Posts: 124
Likes: 14
From: Lyon, France
It could be desgined like this to create a sort of venturi effect to suck air from the clutch through the black rubber pipe and thus get clutch disk dust out.
Race Director
Joined: Nov 2006
Posts: 15,863
Likes: 1,632
From: Clifton, NJ
I wouldn't give this any thought. Even if trimming it or whatever would result in a gain, it would be so small you'd never feel it. I'd trust the porsche engineers on this one.