Stillen vs. Smoky: your take on intakes

Zsteve · 04-03-2010, 12:14 PM

Quote:

Originally Posted by 1slow370

It's actually called an air horn, venturi's are what are used in carburetors and cause a pressure differential. air horns try to smooth the flow of air entering the pipe from the sides to reduce turbulence and increase flow. All the crappy JWT popcharger kits have one. You see them on ITB setups as well.

Some companies are using venturi style intakes to help increase the velocity of the air as it comes in. Stillen has even used this design before. I dont know if its just another name for the air horn or a different design but they are using it in CAIs. Again just a way to try and increase the velocity of the air.

1slow370 · 04-03-2010, 12:53 PM

it's just a misnomer for an air horn as putting a venturii in an intake would be a bad idea as they only increase velocity within the are of the venturii once the air passes the venturii section and expands back out it is slower than it was before it entered due to the restriction upstream. It makes a good corporate buzz word though when selling an intake FEATURING PATENTED VENTURII VELOCITY ENHANCERS!!!! The only real place for a venturii is in a carb. Air horns just seek to guide the air's entry path into the pipe to reduce turbulence and increase flow so they don't cause restriction. It really isn't going to cause HUGE gains though. I'd wager that the top secret intake may have a different diameter MAF pipe and it is running much leaner than stock to account for it's power gains. That and foam filters aren't very restrictive because they don't filter well at all personally i fell that if you are running a foam filter you might as well just run a fine mesh stainless drag filter as they both just basically filter out the big chunks.

View Poll Results: Which intake do you think will come out on top?
Stillen G3	73	47.40%
Top Secret	48	31.17%
They will be essentially equal in HP gain.	33	21.43%
Voters: 154. You may not vote on this poll

04-03-2010, 12:53 PM	#2 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7252	it's just a misnomer for an air horn as putting a venturii in an intake would be a bad idea as they only increase velocity within the are of the venturii once the air passes the venturii section and expands back out it is slower than it was before it entered due to the restriction upstream. It makes a good corporate buzz word though when selling an intake FEATURING PATENTED VENTURII VELOCITY ENHANCERS!!!! The only real place for a venturii is in a carb. Air horns just seek to guide the air's entry path into the pipe to reduce turbulence and increase flow so they don't cause restriction. It really isn't going to cause HUGE gains though. I'd wager that the top secret intake may have a different diameter MAF pipe and it is running much leaner than stock to account for it's power gains. That and foam filters aren't very restrictive because they don't filter well at all personally i fell that if you are running a foam filter you might as well just run a fine mesh stainless drag filter as they both just basically filter out the big chunks. __________________ ANSWER PRICE LIST Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50

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