Join Date: Mar 2005
Location: Scottsdale, Arizona
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Because youve reached the point where there is nothing else to modify.
Do that last. The difference isnt very noticable, esp on bmws. On corvettes and domestics that have shitty ignition systems the difference of a wider gap is more pronounced but bmws already are pretty high voltage systems.
Ive done it twice on my vehicles and didnt feel any difference on the "butt dyno". Maybe real dynos would show 5hp, but why pay for a difference you cant feel or hear or see?