NA: ITB's
Registered User
Joined: Mar 2006
Posts: 457
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I sure hope so.
The past weekend, I was getting a rough tune down on the street without them on because I had a minor problem with my bellmouths.
Anyway, my car felt awfully slow. I haven't driven my s2000 for 8 months previous to driving it with the itbs though. It felt like it wasn't pulling as hard.
It sure sounded fast but the actual performance wasn't quite there...
I'm getting a bit worried now because I really hope the bellmouths will give me back the performance I was looking for.
The past weekend, I was getting a rough tune down on the street without them on because I had a minor problem with my bellmouths.
Anyway, my car felt awfully slow. I haven't driven my s2000 for 8 months previous to driving it with the itbs though. It felt like it wasn't pulling as hard.
It sure sounded fast but the actual performance wasn't quite there...
I'm getting a bit worried now because I really hope the bellmouths will give me back the performance I was looking for.
Registered User
Joined: Mar 2006
Posts: 3,615
Likes: 0
From: 951
Originally Posted by ronac,Apr 14 2008, 09:36 AM
I sure hope so.
The past weekend, I was getting a rough tune down on the street without them on because I had a minor problem with my bellmouths.
Anyway, my car felt awfully slow. I haven't driven my s2000 for 8 months previous to driving it with the itbs though. It felt like it wasn't pulling as hard.
It sure sounded fast but the actual performance wasn't quite there...
I'm getting a bit worried now because I really hope the bellmouths will give me back the performance I was looking for.
The past weekend, I was getting a rough tune down on the street without them on because I had a minor problem with my bellmouths.
Anyway, my car felt awfully slow. I haven't driven my s2000 for 8 months previous to driving it with the itbs though. It felt like it wasn't pulling as hard.
It sure sounded fast but the actual performance wasn't quite there...
I'm getting a bit worried now because I really hope the bellmouths will give me back the performance I was looking for.
Registered User
Joined: Mar 2006
Posts: 457
Likes: 2
Well right now, I'm hoping its the fact that I didn't have the bellmouths in, which is causing the lack in performance.
They add 4" to my overall runner length so they should provide a significant difference in performance (hopefully for the better).
I can't come to a conclusion to say that the busa TB's are too small since there are other factors that need to be addressed.
They add 4" to my overall runner length so they should provide a significant difference in performance (hopefully for the better).
I can't come to a conclusion to say that the busa TB's are too small since there are other factors that need to be addressed.
Former Moderator
Joined: Aug 2005
Posts: 13,078
Likes: 1
From: SoCal
When my car was not properly tuned it sure sounded pretty and strong but I knew there was more performance in it.
Honestly, I think that the horn shape and size are huge, your horns were designed for the busa so it kind of makes sense that they're not helping rush in the kind of airflow that your F20 cylinders are demanding...
Honestly, I think that the horn shape and size are huge, your horns were designed for the busa so it kind of makes sense that they're not helping rush in the kind of airflow that your F20 cylinders are demanding...
Registered User
Joined: Mar 2006
Posts: 457
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No, right now I have NO horns in there. Its just throttle body then nothing.
The carbon fiber ones that go on there are made by me. The go from 2" and taper with 7 degree angle to 2.5". At the end, there is a radius of .25" making the over OD 3.5"
The carbon fiber ones that go on there are made by me. The go from 2" and taper with 7 degree angle to 2.5". At the end, there is a radius of .25" making the over OD 3.5"
Registered User
Joined: Mar 2006
Posts: 457
Likes: 2
I'm worried cause my car isn't fast! 
But.. you're right, I dont need to be TOO worried. I was just worried if the horns will help me that much more.
Thats why I came here to post! To try to ease my worries.
But.. you're right, I dont need to be TOO worried. I was just worried if the horns will help me that much more.
Thats why I came here to post! To try to ease my worries.
Former Moderator
Joined: Aug 2005
Posts: 13,078
Likes: 1
From: SoCal
calm down then 
you need that venturi effect to make these things work. http://en.wikipedia.org/wiki/Venturi_effect
you need that venturi effect to make these things work. http://en.wikipedia.org/wiki/Venturi_effect