StungBlueGT2
Sustaining Member
As others have said it’s simply because you’re comparing an AWD Mustang dyno to a RWD Dynojet. Between the extra drivetrain loss of AWD and the 12-15% variable between dynos you should be right around the 420-440whp other similar Stingers are running.368hp/510tq
JB4 on Map 2, DENSO plugs, DIY intakes, rear cat delete, Borla cat-back.
Seems like most of the numbers I've seen online with similar mods have been HP in the 430s/440s and TQ just under 500..
I get that dyno's will all say something different depending on a wide range of factors, but I really wasn't expecting this big of a gap and that low of HP number.
And no, I never did a stock dyno run, I just used other people's numbers as reference.

12% difference i believe
Yeah everything I read said 12-15% was the most common difference between those types of dynos. But it’s not a 100% set rule because the amount of “load” can be adjusted too. It’s simply the most common used conversion and should be accurate most of the time.Is this a "set rule?" Fully understanding that dyno's are not 100% accurate to begin with.