Cams installation is not that difficult as cams are the top part of the engine so accessing it is pretty straight forward. But fast cam mod is definitely something not to be DIY, best get a good mech to install it as cams install requires clocking tools. As the cam durations are different from oem cams, your exhaust note, idling will all be affected and a tune would most likely be required although you may get away without a tune but you will suffer erractic idling and even occasional stalling when you clutch in. Something to think about for those keen to install.
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