[Richard]

This is a follow up to the original post. I now have about 2500 miles on this setup. I notice NO additional increase in noise at idle or full bore. The jakes may be slightly louder, but certainly no more obnoxious than the old muffler. I do not see an increase in maximum boost.

I do sense marginally quicker spool up of the turbo when starting up a grade.

I do see an 0.1 to 0.2 MPG increase over the fuel mileage from previous long term monitoring.