Janspeed back boxes are gash! They are real restrictive and muffle the sound. Get you self on Essex racing they sell a very good 3.4 & a 4" stainless backbox for £35 I've brought 5 in total now and I carnt falt them one bit
how loud are these? and do they improve the sound? i only have a weeny 1.0l :grinning:
you know what i mean instead of just a bit of pipe at the end etc. like the local tesco racers...an entire back box you say, id be a bit miffed i brought one and only got half like lol
I replaced my K11 backbox with a piece of scaffold pole. It sounded nice and looked standard. Wasn't too loud as it passed the MOT. Total cost of about £5 including a clamp and some exhaust paste.
Is that for a k10? where did you get it? cheers