After having it tuned with Nistune, on 93 octane running 15 psi the reading was only 391 rwhp and some 360+ rwtq. Mods as in my profile. My tuner suggested there could be something with injectors and my testpipes would be a bottleneck. Still, I expected a little more. Especially after a recent post of over 400 hp on sport 500's @ 12 psi. Any ideas?