Here is what Jared from Colorado. Running a street stalker kit with a 76MM ball bearing turbo. .68a/r. The power just Drops after 4500 rpms. Using a .96a/r would move the rpm curve alot higher.
The Density Altitude was over 8000 ft. ...

Jared
"Well her you go. Temp was 70 deg, and DA was a sweltering 8630'. I decided to run the pulls in 3rd gear with the converter locked. I really wish I had the .96 AR you can see by the pK HP @4500RPM that Im really getting choked up top. I managed 16PSI with the boost controller all the way up. I have a 14PSI spring in the w/g. Injector duity cycle was @96% AFR 11.8-12.1, timing was at 17deg. 91 octain with 25% E85 mix. No meth. Made 581HP/693.3lbs uncorrected raw power. Corrected to sea level was 712HP/850lbs. While they were strapping it down on the dyno, I over heard them laughing about the mid 11sec 122MPH Gtech passes like they thought I had a suprise comming. After the 1st pull I saw jaws droppThey were all floored to say the least. They dynoed a few procharged, trucks that made 330-350, and a few hopped up cobra mustangs that made 350,s. "

This is the corrected numbers.


Here are the real numbers.