Desnorkel vs Cold Air Intake
Hey y'all....
I've searched, and while there is plenty of discussion in both topics, I haven't found anyone who has compared the sound of a desnorkeled car to one with a CAI. Can anyone comment? I'm interested only in the sound, for now. I've desnorkeled, but if a CAI is noticeably throatier, I'll do that. Sent from my SM-G930T using Tapatalk |
The stock 986 already has a cold air intake, but it definitely sounds better without the snorkel.
If you're referring to a K&N type setup with a cone filter (or other) inside the engine bay, not only will that muffle sound, but it will become a hot air intake. |
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I would not simply remove the airbox and ad a cone filter, letting it breathe hot air. There are any number of CAI kits on the market that include a panel and gasket to isolate the cone type filter from the engine bay. (I guess an important part of this discussion then, could be how effective this isolation is? ) Here's the thing: I test drove an '02 S before I bought my '03 S. The 02 seemed to have a much more pronounced 'snort' from the air intake than my desnorkeled '03. That sound was part of my decision to buy a 986. I'd like to find it. Sent from my SM-G930T using Tapatalk |
the difference then is panel filter vs cone filter (either is in a plastic box on the side of the engine bay). not sure there is much difference soundwise.
most of the cold air kits come with the pipe from intake to throttlebody, as such they do-away with the helmholz chamber on the oem intake pipe - try removing that (plug the opening) and see what happens. |
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it's that weird warty thing on the intake pipe - designed to muffle the intake sound to meet noise regs (and perhaps provide a tiny bit of low end power. perhaps).
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I went from a desnorkeled intake to cone / barrier setup. It is significantly louder under load.
http://i.imgur.com/f72Nejyl.jpg |
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uhm...how about desnorkel + race filter (BMC or K&N)?
A little bit more power and way more intake sound. That way you won't have all the hassle with the cone cold air intakes, because it is all easy fit plug'n'play. |
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Just rip all that stuff out and put a K&N in there. The engineers at Porsche don't know how to make a car sound good. Right? :cool:
...or is there physics involved? I read about this stuff once and had a basic understanding, maybe you can too. Pressure waves, harmonics, volume, length, clean flow vs disturbed, ... Way too much engineering involved for me to think I could make it better with a little sheet metal, some PVC, and a generic filter system. Simple: https://itstillruns.com/air-intake-resonator-do-12156112.html For the engineers: FLUID DYNAMIC STUDY OF INTAKE MANIFOLDS OF INTERNAL COMBUSTION ENGINES IN PRESENCE OF ACOUSTIC RESONATORS |
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If you look on Pedro’s website, he shows a cost effective method to remove the hemholz box and make it a straight pipe from the MAF to the throttle body. Nice thing is if you don’t like it you’re only out ~$30 and some time.
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To suggest that somehow the engineers at Porsche read my mind and designed this system to meet MY specific needs or desires is preposterous. I'm sure the amount of noise I'm looking for would be considered unacceptable by many, or most, and CERTAINLY by most DOT standards. And if you think that the system installed by Porsche can't be improved upon, you're sorely mistaken. As to the physics: while this is my first Porsche, I've built plenty PLENTY race motors, both superbike, muscle car and even a little fiat 1.8L that'd wind to almost 9k: the way "the physics" say something should work is not always the way it works, because your basic calculations don't take into consideration all of the other variables. So you go ahead and sit on your unmodified car (because Porsche clearly optimized everything on this car, so why would you change ANYTHING, and for that matter why would Porsche ever build another car if they got it right this time?) While you convince yourself that the wave modulation of the hyfendufenator serves to counter the harmonics of the filter bearings..... Me? I'ma go ahead and tear out all KINDS of useless crap that Porsche designed and installed because they were required to compromise, like every other automotive engineer and manufacturer. How'd I do? Did I accurately match the tone of your post? ;-) Sent from my SM-G930T using Tapatalk |
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http://986forum.com/forums/uploads02...1522419318.jpg In answer to your original question: Quote:
https://www.roadandtrack.com/new-cars/car-technology/news/a21724/how-to-make-your-prius-sound-like-it-has-a-v-8-33857/ http://986forum.com/forums/uploads02...1522418538.jpg |
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