First post, hope this is allowed.
Was browsing AliExpress for a cheap exhaust and came across this one with what appears to be a high-flow cat.
Haven’t seen an exhaust like this before, does anyone have experience with it? Seems like you may be able to get away with not needing a tune.
Mobile:
Exhaust here
Desktop:
Exhaust here
I have been messing around with several exhausts and here is what I have found.
1) the best for power and QUIET is the stock exhaust
2) the best for power and a sweet QUIET sound is the stock with aftermarket slip on
3) the best for more power, and LOUD is any aftermarket system but you are looking at $$
4) the best for same power and LOUD and low $ is the Chinese aftermarket, either standard or loop one, with not using a baffle
5) the best for maybe a bit more power and not as LOUD and low $ is the Chinese aftermarket, either standard or loop one, with using the baffle
6) the best for more power and much less Loud and low $ is the Chinese aftermarket, either standard or loop one, with using different baffles in different places.
7) I am looking to get the exhaust you are showing in your opening post and using it with my Akropic slip on, but expect it to be loud, but maybe a bit more power. (I like the expansion-box aspect of this Chinese pipe, that takes the place of the Cat--this may be a key reason how Yamaha gets such performance output of the stock setup.).
8) I ordered a pipe converter on Aliexpress for the aftermarket exhaust to match the stock muffler, so will experiment with stock muffler and slip on.