im geting bbk long tube headers and a off road x pipe and underdrive pulleys i was wondering how much horse power that would add
they will give you perhaps 5-10 at the crank, but will not be noticeable at the wheels.
these are really good installations, but you also have to do
-cold air intake and larger throttle body or throttle body spacer
-performance chip or tuning chip to reset engine's management system
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