well i was thinking about ordering the stage 1 cam shaft from jbp, but what is the core charge thing that they advertise?
A core charge is an added fee they tack on so that you send them your old cams. So either you send them the cams before hand and don't pay the fee, or you pay the fee, you get your cams, and later you send them the old cams for either a refund or store credit, however it works with them.
4cyltuner.com - Information Source For 4 Cylinder Tuners
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as far as I know there's no core charge for cams from JBP. RSM has a core charge