[mzerr927]

I did 4 1/2" holes in the exhaust at 12,3,6,9. Ran that for about 2 months, love it but wanted more. then 2 days ago, i drilled the center baffle plate out with the 1inch hole saw bit. Now when i left off the throttle, when im reving in low RPMS it makes a whistle note. has anyone else experienced this after drilling out the center?

 

[Okda]

maybe something is left inside from the drilling process and causing this whistle

 

[mzerr927]

there could be, i sent a magnetic rod down there and collected some shrapnel, but there could be more

 

[strykme1]

Have you tried re-drilling it? Most whistling noises come from an uneven surface. Maybe worth a try?

 

[mzerr927]

im thinking thats what it is, the unevenness.. ill give it a shot

 

[strykme1]

Hope it works bud.. goodluck!

 

[mzerr927]

well i removed the muffler and made sure i got out any loose metal frags and that wasnt it...then i tried redrilling the 1inch hole to the point that it looks good and smooth...but its still doing it...i dont know...its not so much a whistling sound but more of a churping....and its annoying, as far as i can imagine i only have two options to fix my issue besides buying a new system, is to use a dremel type tool attachment and try to smooth it out a little more or add more 1/2 holes (from 4 to 8) what you think

 

[middleagecrisis]

I see a set of V&H in your future.

 

[mzerr927]

eyeing them up

 

[tonto247]

I see a set of V&H in your future.

see any V&H in my future.

 

[Natedog]

Sounds like you may have a metal on metal "scratching". Did one of the baffles come loose? maybe a weld broke while you were drilling. Stick a small rod in there and put some pressure on different areas to see if it stops "chirping"

 

[11Stryker]

Birds Nest I'll Bet!

 

[middleagecrisis]

I see a set of V&H in your future.

see any V&H in my future.

yes. Quick go to an online store and order today. You will have them by next week. Do it now.

 

[mzerr927]

Well I tried everything that I could think of and your probably right on the broken weld causing the issue. So i pulled the trigger on Cobra swept pipes from denniskirk. Should be here and installed by Wednesday.

 

[11Stryker]

There ya go friend! No better reason now.