r-seriers vs. e-seriers

[ExVillin400]

which pipe do you all think is better. i hear that they are the same thing but one doesn't have the disc's & now im thinkin of gettin one of the white brothers slip-ons because i here alot of you guys talkin about it.

I dont know much about either of them but I know that the r-series is not as tunable as the e-series because it doesnt have discs to add or subtract. It really depends on what you are expecting of the pipe. If you just want a pipe to slap on there jet it and forget about it than the r-series is what you want. If you want a fully tunable pipe that can alter the powerband, sound levels and power levels than the e-series is for you. I guess it just depends on what you want.................the choice is yours my friend.