I have a friend with spare test pipes "to replace the cats" from a 355 and want to remove my cats on my 348 are they the same ? I guess the HP improves plus the sound is sweet! any info out there??
They are different. BTW i have a set of 348 Tubi test pipes still in the wrapper, for sale, let me know if you have any interest. I upgraded to a 360 before I swapped out the cats.