Procharged FBO 4.6=424hp 433tq……..?

Well for reference, my 2013 GT 5.0 convertible advertises 420hp & 390lbs of torque @6500 rpm, naturally aspirated.

there are different scales because HP and Torque are different numbers ... you need to read the HP scale for HP, and the Torque scale for Torque

your numbers do seem a bit high, not sure, maybe it was a "happy dyno" ?

Those are very good numbers!

Indeed, not all dynos are the same and some are "looser" than others. Wear, the last time they were calibrated, lubrication and more can definitely affect the numbers. Altitude (air density) and temperature can also make a big difference.

That all being said, the best way to get a good result is to go to a reputable tuner! Well done!

Farva_84 said:

Ok, so now that the afterglow of dyno day has worn off, I’m looking at my numbers a little more skeptically…

02 4.6 2v 133k Miles
P1SC-2, 3.9 pulley, 3 core cooler, Power Pipe
C&L plenum, 78mm TB
Long tubes, orx pipe, magnapack catback
91 Octane


Honestly, i was expecting 380ish for hp. But it pulled [email protected] and [email protected] The original dyno sheet has
different scales on the left and right sode of the sheet which makes the hp look a lot higher than the tq…i redrew it with the same scale for both hp and tq…it’s a little messy but you get the idea….what do you think, maybe not corrected numbers?
View attachment 792217

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Why did you hand draw a dyno graph?
Why not just post the actual graph?
Who did your tune?
Your individual parts combination and tune will dictate how much HP and torque that you make. The HP seems about right to me but the torque seems higher than what would normally be expected imo.

I understand now.
I don't like the way the dyno guy put the scales different on either side of the graph for HP and torque. That's stupid and confusing imo. The peak of the torque line shows that it's numerically more than the peak of the HP line yet it's shown as being lower on the graph because the scales are confoundingly different. Why someone would print that out for you like that is beyond me. Maybe the guy isn't familiar with his software or maybe he just lacks common sense. It's not like the values are even far off from each other where you would ever want to do that. Both sides should be in 100 increments instead of 100 on the left and 90 on the right. It's really annoying the way that it's shown.
I'm not familiar with the differences between the P1SC-1 and the P1SC-2 but if the P1SC-2 is rated to give more torque than the P1SC-1 that would explain it.