Big thumbs up for the guys in there []
Just been down in York for a couple of days and on the trip back noticed the exhaust was blowing, looked underneath and stuck my hand round the mid section and yup, puffing away!
Popped into National and the guys pointed out that who ever had fitted the HKS had not bothered with a gasket on the middle or backbox section and that both parts were blowing, they popped a new gasket in and sent me on my way.
Cost for this, big fat Zero []
Never used them before but will defo go back.