right ive put on janspeed n left second one disconnected at moment car feels kinda same mayb bit quicker but the most annoying thing is the loudness n kinda loads of small rattling bits also rasping note at the higher revs i aint sure if its cuz the split in backbox that i found yesterday n the manifold just made it louder n not as b4 it just had a low growl now its like a loud rasping thing screaming its balls off will try record it 2morrow n i got an old clip with it b4 so u lot can tell me if its meant to b like that