Get a 3" DP. For the L67 a 2.5" is junk. get yourself a colder t-stat and colder range plugs...make a intake...then MAYBE a 3.4" but you'd probably still have some knock without a custom tune.
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Get a 3" DP. For the L67 a 2.5" is junk. get yourself a colder t-stat and colder range plugs...make a intake...then MAYBE a 3.4" but you'd probably still have some knock without a custom tune.
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