Question I have an mc21 loom and PGMIII (plus a funny looking round thing but that’s it do I need anything else??) that I am thinking about putting on my mc28, but am also thinking I should join up send the PGMIV Card away to be reprogrammed to the HRC 030 programme.

Which would be better and why? Would it be 6 of one half a dozen of the other??
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MC28 Track Bike
01' Honda VTR 250 (previously owned)
05' Suzuki Gsx-R 600 (road bike)