Originally Posted by cossie330
Hi guys have just fitted QC57C plugs on recommendation but was told to expect lumpy tickover is this true and has anyone else had this ?
Its a very good plug mate so if you can put up with the lumpy start its worth it, alot of people go for c59`s but i`ve been told that there not that good for a 330/350 brake cossie, more a 220 brake rst engine kind of plug
