This is testing done from Sound Performance on Supra motors. Below is from what he posted.

"This was on a 3.4L 10-1 CR 2JZ with cams and all the turbos were all in!"

"Now look at this next dyno on Reid's car, (This is a 100,000 mile completely stock never opened supra motor) the 64 out spooled the 67 and made more HP showing that when inits efficiency range it outperforms the 6766, not until we went all in like on the 3.4 motor did the 67 make more HP"
