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Great article for newbies:
http://gmhightechperformance.com/tech/0506htp_fresh/
They add roller rockers, a Borla exhaust, Kooks longtubes & custom tune plus new Opti, wires, and timing chain.
In the print version they say how much HP they gain, but I can't remember at the moment.
http://gmhightechperformance.com/tech/0506htp_fresh/
They add roller rockers, a Borla exhaust, Kooks longtubes & custom tune plus new Opti, wires, and timing chain.
In the print version they say how much HP they gain, but I can't remember at the moment.