I immediately noticed, however, when I am accelerating above 1500rpm's, I can hear (with the windows down) a loud hissing sound which gets louder the more I accelerate. The hissing sounds like a turbo spooling up.

I checked to make sure that there are no pinched hoses from the intake and everything was reinstalled perfectly. I have a K&N cold air kit on the car. I just thought this noise was normal and didn't really think too much about it, but I now worry a bit that something may be choking. Has anybody else experienced this? Does anybody have any suggestions as to what could be making this sound?

I have another un-related question for anybody who has the K&N cold air kit installed. On the bottom of the intake tube around the filter end there are two hose outlet grommets. I only have one hose physically connected because I didn't have another to hook up. Is there supposed to be two hoses hooked up to it? What is the second (larger) hose for? Is this a hose used on other R50 models? I currently have the larger grommet plugged up.

Here's a couple of pics of what I'm talking about from the installation guide:

Thanks!


Modified by Pwnin O'Brien at 12:42 PM 7/4/2009



Post Title: Re: Weird Hissing After Cleaning Throttle Body (Pwnin O'Brien)
Posted by: Ron Burgundy at 4:11 AM 7/4/2009

The only thing that comes to my mind, is a loose connection (especially if you removed the throttle body) and air is hissing out (like whistleing)

PS - How do you like the intake? I've been debating this... is it worth it?



Post Title:
Posted by: Pwnin O'Brien at 7:26 AM 7/4/2009

I love the intake, I don't really notice the horsepower gain (something like 14.4hp in the 5000rpm range) but it makes my truck sound awesome. During acceleration it sounds really good.



Post Title: Re: (Pwnin O'Brien)
Posted by: Ron Burgundy at 1:18 PM 7/4/2009

I googled the issue, and came up with nothing.

Did you completely disassemble the tb?
Maybe just for good measure, take it off again and double check your work.

I'll keep looking into it and let you know if I find anything.



Post Title:
Posted by: Pwnin O'Brien at 10:58 PM 7/6/2009

I'll replace the gasket and post my findings.



Post Title: Re: (Pwnin O'Brien)
Posted by: Pwnin O'Brien at 11:53 AM 7/9/2009

P.S. I also e-mailed K&N Tech support to find out about that hose and they haven't gotten back to me but I'll post their response when they do.



Post Title: Re: (Pwnin O'Brien)
Posted by: Ron Burgundy at 4:15 PM 7/9/2009

Let me know what K&N has to say.



Post Title: Re: (Ron Burgundy)
Posted by: Pwnin O'Brien at 9:15 AM 7/10/2009

Thanks for your help!!!

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