i already know the out come thats why i bought it coz i dont prefer non original parts even the nut bolts.....so kisi wajha se hi khrcha kia hy brother dont worry about the performance and just check out on google that,
how expansion chamber design does work, and how it increase the HP....
My concern is about performance not pretty looking things....rather i also have almost brand new original exhaust of 115 so it will be a multiple choice for me