Conservative tuning, it was also tuned on an older turbo, 'greddy easy cams'.
Have a look at:
http://zilvia.net/f/cars-sale/278427...one-right.html
Hes only putting down 12.5 more hp than me. (also note SAE vs STD 4%)
Oh also was on a clutch that was slip like a bitch back then... I don't know if it slipped on the dyno, graph looks fine. I might go get it dynoed again since I've changed a few things since the then.