Something is WAY off. 580 RWHP @ ~4600 lbs race weight to me means almost a 120 mph trap. I don't really care what the ET is...his trap is WAY off.

There are slightly modified SRT's running faster traps with simple bolt-ons with ~400 RWHP.

I hope he gets it figured out. FWIW...I've seen many Procharged SRT's running crappy traps. I've also seen some really haul. The 580 RWHP tells me it isn't the tune...which is typically the case.

1967 Satellite, CNC Eddy Headed 500ci Street Mauler
(Dyno'ed @ 600 HP / 650 ft-lbs)

2016 Challenger Hellcat - Holy Hell
2012 Hemi Ram Sport Crew Cab
2011 Avenger, Pentastar V-6
2007 SRT-8 Charger (Dyno'ed @ 470 RWHP)
1986 Caravelle, 318, aka "Rosco", Back Road Burner!

ALL Black...Bad Boys always wear Black!