[UKZR1]

The car I borrowed to goto LeMans in a couple of years back had jeal headers, no cats and corsa - no resonance that I noiced,

Mine on the other hand has jeal headers, no cats, B&B and x-pipe. That has bad resonance around 2000rpm. I would say it was slightly worse before the x-pipe. I get around the resonance by not using 6th very often. Should be better soon as I'm fitting 4.10's .

I still prefer the B&B sound over the corsa sound so will live with the resonance