high flow mufflers

Hi guys, I posted a thread about the PP muffs looking for a quieter muffler then there quiet muffler. I can't take the noise anymore. I put them on two months ago and I'm hoping I can find something quieter. I have tinnitus (constant ringing of the ears) and I need to do something besides wearing ear plugs. Any ideas?

 

Have 2005 C-15 found out has catalyst in mufflers if I put hi flow mufflers on will it screw up my ecm

 

No , the ECM has no way of knowing exhaust restriction on those engines. Get those muffs off and put some free flowing ones on.

 

No many people including me in the past have done that . Your fine

 

Ok thanks

 

Here is how m100463 looks vs stock Volvo

 

Awesome. I actually have the PP straight thru set. Yet, they finally wore out after a good 10yrs. Going on a C15. Thank you.