will somenoe PLEASE  answer this email if you know the answer, i am
having an ongoing feud-
do you have to take the cat out when putting in a dumpvalve into a
diesel to make it sound like a diesel dumpvalve rather than a petrol
dumpvalve?  a fella here reckons that if you dont take out the cat in
a diesel then it will sound like a petrol dumpvalve?
please help someone!!