i'm in the process of ordering underdrive pulleys and a nelson tune...i was just wondering how much horsepower will i get out of those two combined....
i'm in the process of ordering underdrive pulleys and a nelson tune...i was just wondering how much horsepower will i get out of those two combined....
http://i32.photobucket.com/albums/d2...y/DSCN5974.jpg
'99 5.3ltr, k&n cold air intake, hedman headers, flowmaster, electronic exhaust cut-out, 4/6drop,
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