Here's specs of build, how much HP am i looking at?
Rechamberd head
Bored
Port n polish
VF3 reed
34mm PJ
FMF exhaust
CFM airbox
Rechamberd head
Bored
Port n polish
VF3 reed
34mm PJ
FMF exhaust
CFM airbox
id venture to say 20-25, your biggest gainer is going to be port and polish and the exhaust.
Ken o'connor's diy porting vids with his head mod and a stock carbie was independently dynoed at 28 hp. most good port jobs are a lot more involved than the diy one so you should be looking at more than 28 ponies if set up properly with the mods you listed.
I'd say low to mid 30's as well. I've always heard a good port job and head mod with the supporting systems (carb and pipe) upgraded as well is good for double the stock HP.
There is a local shop here in town (anybody ever heard of EHS Racing?) with an in-house dyno. I may take my Blaster with its KOR-ported top end in for a run sometime this spring. I'll report back.
Would DMC be better for power than FMF?
Much of a muchness between the pipes but I feel the DMC starts pulling at a lower rev.
I now run a DMC so I am biased when I say it is the best sounding pipe on the market.
I love my fmf sst. I have both the sst and the gold series fmf's as soon as I ran the sst i buried the gold series. Lol