Dyno numbers are really hard to compare because there are too many variables . . . but yeah, that does sound a little low for your mods.
Mine was something like 295 HP and 300 TQ, also on a dynojet ; mods are in signature (basically stock -- Roush CAI, Steeda UDP's, Shaftmasters aluminum D/S, Bama 93R tune)
Mine was something like 295 HP and 300 TQ, also on a dynojet ; mods are in signature (basically stock -- Roush CAI, Steeda UDP's, Shaftmasters aluminum D/S, Bama 93R tune)