Definitely need colder plugs - and gap them tighter too! One or two steps colder... What is the next spring level you have?
Definitely need colder plugs - and gap them tighter too! One or two steps colder... What is the next spring level you have?
GM EFI Tuner
02 WS6 9.41 @ 143 MPH 3675#, drag radials, pump gas, through the mufflers - sold
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