misfire could be a lot of things , low compresion due to worn out rings ,bend valves, valves not seating properly (burn valves) also bad injector ,no pulsation ,bad spark plug or wire .it could be a lot of things..........hope this help ...Omar
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My shit still slow
618 whp 492 ft/lbs at 22 psi (Low Boost)on pump gas ,
stock block ,more power coming soon ,stay tuned 
Tuned by Alpha @ Induction Performance