I previously put down 633rwhp and 654rwtq. Not stellar, but that's with 20s and 3.73s at about 900ft. Along with the 2013 TVS, I had a VMP 67mm TB, 2.4 upper and off-road X with 4 straight-through mufflers to keep the noise reasonable.
I added JBA 1 3/4 headers and X, primarily because I got a deal on a used set. Great fit once they're on, but almost impossible to get to half the bolts. Not much louder at idle and cruise, but you can't hear the blower now under WOT. I may need to look into some other mufflers.
This isn't a direct comparison as Justin added some fuel below 4500 where it looked lean previously. That undoubtedly hurt the torque numbers. The new numbers are 654/656 baseline with two people sitting in the trunk to control wheelspin. Boost dropped 1-1.5psi as expected. The 658/664 was with another degree of timing and a light spray of alcohol. The alcohol bumped the boost back up to 18 and dropped the A/F to about 11.4. Again, this was with a small nozzle. Without the timing, you see a slight HP hit due to the rich A/F, but torque is about the same.
I added JBA 1 3/4 headers and X, primarily because I got a deal on a used set. Great fit once they're on, but almost impossible to get to half the bolts. Not much louder at idle and cruise, but you can't hear the blower now under WOT. I may need to look into some other mufflers.
This isn't a direct comparison as Justin added some fuel below 4500 where it looked lean previously. That undoubtedly hurt the torque numbers. The new numbers are 654/656 baseline with two people sitting in the trunk to control wheelspin. Boost dropped 1-1.5psi as expected. The 658/664 was with another degree of timing and a light spray of alcohol. The alcohol bumped the boost back up to 18 and dropped the A/F to about 11.4. Again, this was with a small nozzle. Without the timing, you see a slight HP hit due to the rich A/F, but torque is about the same.
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