I just installed the o/r pro chamber (with my already in SLP LM II's). When I accelerate it makes a sort of clicking noise, speeding up as with the RPM's. Is this normal? Do I have a leak?
please tell me that this noise can go away.

 

I don't think any clicking noise is normal. When driving, listen to see if you can pinpoint where it's coming from. I'm not a prochamber fan, but i think it would sound a lot better with flows or bassani. A chambered muffler sounds better with prochambers, H-pipes and X's. That's just my $.02

 

as I said in the tech section, did you replace donut gasket between midpipe and header, one time use only and if you re-use you'll get a leak with ticking

 

You probably have a leak

 

You definitley have a leak. Loosen everything up and retighten from the manifolds back.

 

same thing happened to me...get the gasket