| You don't have to take offense. It's probably the opposite of a Dyno Dynamics that is well known as the "Heartbreaker" dyno. For example, my S4 put down 365 awhp/370 ft*lbs on my mechanic's Dyno Dynamics and it'll trap 117-118 mph all day long in the 1/4. You car with the trap speeds you mention would most likely put down low 300's on this same dyno. Again, every dyno is different. The most common dynos you will see are Dynojets. The local Dyno Dynamics dyno reads 15%-20% lower. From all the experience here, 400 rwhp on a DYNOJET is difficult to do without being maxed out with all bolt-ons and 18+ psi. And with your mods, hitting 420+ on that dyno proves that's an extremely high reading dyno. It's nothing to get upset about so I'm not sure why you're so defensive. Again, every dyno is different and different brands give different readings (and yes numbers can be manipulated). This is just fact and your dyno is definitely high and I'd venture a guess it's 20% higher than a Dynojet and potentially 35% higher than my local Dyno Dynamics.
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