I had ctr cams in my car with stock rev limit for a while. Then I got tired of it and wanted something bigger. Might as well just save up and splurge rather than go through isntalling cams twice!

I don't think the RS*R will even give you 6hp lol those are some optimistic estimates you have! I have one and am thinking of getting rid of it for a SMSP piece. The exmag has a bottle neck and isn't optimal once you build your motor!

For mild mods you won't have to touch your fuel system but as you get deeper into the mods you may have to look at new injectors or a new fuel pump and regulator.