And this is why i hate dynoes and the black top doesnt lie.
If your car only manages to run 146mph with 620kw at the hubs i would be asking your tuner whats wrong with it.
We have an S14 that makes 500rwkw @33psi with a 6766 and it runs 138mph all day on low boost.... low boost is about 430rwkw. I havent had it back to the track since we put more power in it and made the 500rwkw but would be expecting something like 144mph with the boost turned up.
Correct me if i am wrong but power at the hubs would be worth what, 50rwkw gain? so your cars making close to 150rwkw more, comparing it to low boost on our car, but only runs 8mph more.....