Got tired of the Noise from the SPT cat-back so I swapped it out for a Perrin Cat Back. Went from a Quad staggered to Dual slash cut
Comparison of the size difference, the new exhaust only weighs 32#, Stock Subaru weighs in at 54#
When i got my STI last year I was disappointed with the Exhaust. The only STI that i had ever driven was a 2011 sedan with the SPT exhaust. When i started the Sedan , it was a "WOW" moment. I was surprised and happy with the deep bassy burble that came from the exhaust, My 5 door sounded nice but was higher pitched. The Perrin cat back that i installed has a nice deep bass tone to the exhaust. This was a definite plus, once i got everything unboxed , the cat back had all the parts separated into OEM down pipe parts or aftermarket DP parts. the install directions surprised me as it was only a page long with no pictures, Perrin instructions are always detailed with pictures etc. I found out that it didn't need directions, it was so easy, 45 minutes later the car was off the jack stands and started up, impressing me with the sounds, after it warmed up i was impressed with how quiet it was even though the whole kit weighed less than the OEM muffler.
if anyone is looking for a new exhaust look at what Perrin has, the sound, ease of install , looks and most of all Price. Perrin WILL have it, i got one that was fairly quiet, but they have everything you need from mild to Wild
Thank you Mr Perrin my STI is a little bit better now that i have installed your cat-back