i had/have a White Bros E-series pipe on my 426, it runs amazingly awesome with it. untill i got pulled ove by the ranger for it being to loud. (106dB) so i had to put my FMF Q series pipe on it. now it rides like crap, it feels like its congested, even with the JD jettign kit....i htink im gonna get the new WB E2 pipe, does anyone know if that meets the 96dB limit?
My best friends 2004 WR 450 tested at 98 db with the quiet insert in.