Its kind of apples to oranges but I was running around a 185 in my 250R with a basically stock motor and just a little compression added. Actually, I had a PTR Hi-Rev pipe, DG silencer, K&N, no air box lid, and about 180psi of compression. I was running it on av-gas and at about sea level. I know its a totally different engine but hopefully it gives you a push in the right direction.
John
1985 Eddie Sanders ATC330r
1986 Monstecate
1984 ATC70 (awaiting 125cc transplant)
1984 ATC125M
1986 GSXR 750 - Keepin' it old school!
1999 Arctic Cat 500 4x4 plow machine
1999 Arctic Cat Thundercat 1000 (lake lizard)
1996 Arctic Cat Jag 440 L/C (ditch banger)