No that is bout right for what is done here from my car with way more mods. As example.
4.75 stroker built for 1500hp
9.2 to 1
2.3 gen2 whipple
2.9 rr pulley
C&l 125 maf and mafia
Jlt cai
Stage 3 comp cams
Heads springs valves cut ect.
Arh headers
Stainless Bassani open race mufflers
Fore triple pumps wire upgrade
View attachment 1587450
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This dyno is notorious for reading low, not too concerned with the lower numbers as much as the boost psi. I've had two of my other Mustangs on this dyno, supercharged 2000 GT and another 03 Terminator. 2000 GT made 412/400, ran 11.29 @ 123 in the 1/4 with it, 03 Terminator made 500/489 and ran 10.88 @ 128.