Magnaflow mufflers are 2 1/4 inch which matches my factory exhaust tips. Improved the tone and reduced the rasp on my 2013 audi s4 with catless headers. Sounds awesome, just not when mds kicks on.

This is not the same magnaflow item that came under this part number previously. This page currently lists this same part number but with an incorrect description of 2.

It's just a matter of chipping off the old and adding a new layer. Works like it should had hole in flex pipe really bad. Worked great to seal at the *.

The consistency is like peanut butter, making it easy to apply. After drying overnight just to be sure of a complete cure -- all is well. Do not skip heating, it absolutely needs to be heated to cure.

It hadn't even hardened and a blob of it was impeding the exhaust. It seems to crumble and fall out of exhaust joints. Likely not suitable for use with a catalytic converter.

Product leaves much to be desired. Does not do as advertised. Dont waste your money. Its total junk. Wasted hours i'll never get back!