[BLUE67SS]

I have an 03 660 completely stock and I have a pro flow if I put this on do I need to rejet it, if so what should I jet it to.

thanks

 

[ur_cableguy]

If you increase the air intake...you'll need to rejet. I may try 145/150 or 150/155....especially if you modify the flaps on the snorkel

 

[jlraska]

if you are keeping the lid i would first do a plug check. i don't think if will affect much until you increase the air.