It was me with the resonance... It's there. Between 2k and 2,300 rpm. I checked the bolts and everything.
It's fine... the sound is just amazing. I am not going back to stock!
Anyway about the upgrades.... I think 100HP is a little optimistic.
I have the exact same setup, Accufab Xpipe, inlet sleeve, Ford Pulley and tune and trans cooler....
Boost goes from 12psi to 14psi. So it is still a mild upgrade compared to some of the more aggressive pulley or Whipple.
I would say you should expect around 620-630hp at the crank (560hp at the wheels).
But do not focus on the max HP. I had the opportunity of comparing the dyno of my car with a Whippled one on the same dyno. The Whippled car was putting out 750HP. But the torque curve was very interesting....
Basically my car is putting out 580ft-lb of torque from 3,500 and it maxes out at 600ft-lb at 5,000. The Whippled car was putting out 600 at 3,500, 620 at 5,000 and 620 at 6,300.
My stock car on the same dyno was 510 @ 3,500 and 520 @5,250.
Since the cars were all tested on the same dyno you can draw some significant comparisons.
The Whipple is very efficient as the revs go up and it's lile a freight train. It just never stops. But the little Ford pulley does its job low down. In real life condition you are mostly going to accelerate between 3k and 5k and this is where the Ford pulley is perfect.
So do not get disappointed if your dyno will read 550-560 rwhp. Look at the torque curve. Compare it to stock. That is where the real beauty lies.
