Not sure if its been mentioned before but ive done a lil research reading up previous posts and found out fitting a MC21 flywheel on a MC28 (stock card) provides advancement to firing timing, but i also understand that its not recommended to use the MC21 flywheel on a HRC Card PGM-IV... as the HRC card already does the job of advancing the firing timings. The question thats been circulating my thoughts... im using a MC28 running HRC-030 and i got it up and running with the MC21 lightened flywheel (30% lightened) the throttle response no doubt proved snappier
but at the same time the rev limit barely peaked at 13,000 RPM.. can anyone advice me what are the cons of using a MC21 lightened flywheel on a HRC PGM IV?
Thanks mates!
