SuperFlow 901(?), but I don't remember if Dwayne said the software package has been upgraded since when I was there 10++ years ago.
To get a sense for how "happy" it is or isn't, the old version of this same engine made about 610 HP and pushed my 3750# car & driver to mid 10s at 126 MPH in full street trim. The track is close to sea level, so the #s do reflect that.
If that was through mufflers,the 610 number is probably pretty close. I have a 901 but the dyno cell isn't finished yet. I want to accurately calibrate it and get the engine from my race car on it so I can have some reference factors for the engines I build.
