Whistle coming out of the Exhaust Pipe? Any Idea what it might be?

Dude I don't have a muffler look at the picture

 

I ask because I have jba headers, but I could see it affecting the stock ones as well. I thought for the longest time my "chirp" was a bad belt because it would only happen during specific rpms. It wasn't until I had someone rev the engine slowly while I held a pipe to the right header and found the noise source.

 

that just a cat??? it looked like a tiny muffler way up front.. where thats part of the issue im sure.

Why arent you running a muffler?? they do more than just quite the exhaust, they are in place for proper back pressure as well.

 

yea this noise comes only out of my exhaust pipe thats whats making it hard for me to see where its actually coming from, could it be perhaps the engine...

 

run the truck

hear the whistle

get a big rag and stuff the exhaust and block it for just a moment, 5 seconds or so or until you hear rpm's change.... does whistle change at all ?

 

Yea I know I'm planning on running a Aero Turbine I had on before but that will only make the noise silent and would be able to figure out whats really going on

 

I've had a leak before and I got it fixed and you could hear where the leak was at and it was almost consistant. Whats difficult about this time its only heard at the end of the pipes and its not as consistant has a leak would be.

 

Put your stock exhaust back on and listen.

 

Yea thats what ill be doing on Wednesday

 

Got a carven exhaust put in my truck, gotta say I love it!
Check them out its a new company very much like Aero Turbine, but I feel gained more "power and back pressure" than I did with my previous Aero!
http://www.carvenexhaust.com/