riight then. my exhuast flexy is blowing very very badly which is making it run very poor also as its just before the lambda so its making it have crazy readings. ive been quoted 150 pounds for a new down pipe as ive been told the welds on my down pipe currently are not very good im currently running a 2,5" powerflow exhuast. does that seem about right or should i just get rid of the exhuast alltogether, ps cars a mk4 agu any advise? what would you do in this situation?