I was driving the 348 yesterday and it occurred to me that the tubi exhaust is not as loud or as throaty as it used to be. It's around 8 years old now. Is it common for exhausts to lose their bite after a period and if do is there a fix? On a side note, I also hit 50,000 miles yesterday. Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login
+1 .......... good point on the valve! .... plus as F1moving mentioned, exhausts normally get a bit louder with age.
Sometimes carbons can build up inside the muffler and has the tendency to muffle the sound a little bit.
lol ....... ......... I forgot about the car owned by the OP ..... I just read the title and some responses and posted a 'quick reply' ..... I didn't even look at the pics ....
Did you check your leakdown/compression numbers? My Capristo 3 seems to have changed a bit too after 25k miles of me driving with it, not quieter or louder but slightly deeper in pitch. Car looks awesome BTW, especially with 355 rims. Very stealthy and aggressive yet still somehow elegant. Wish I hadn't blown my wad on a problem 996, I could have bought 2 nice 348's with the money... So dumb!
you can have something break inside the muffler and change the sound character. I would take it off the car and shake it. If it rattles you can cut the can open and fix it and TIG weld it back. If you are running cats you can have an upstream cat breakup that fools you into thinking the problem is in the muffler or have a piece of cat end up in the muffler.