Originally Posted by
lastsun
when switching fromm picco 2033 to nova 2052 pipe are there much tuning to the needles needed?????
Depending on the size of the header, which normally is a medium conical, you will need to richen the HSN to about 3 hours, also it will depend on what fuel you are using, to be safe I would richen it to about six hours, run for about 5 laps bringing the engine temperature up then tune it from there on.