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2004 to 2008 F-150 and Mark-LT 4.2L, 4.6L and 5.4L equipped F-150s and Mark-LTs. |
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Thread Tools | Display Modes |
#9
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I returned the accel plugs today, and again they insisted that i will burn out the headers if i don't use colder plugs. they wanted to show me burnt headers. i told them that's from running too lean with cai and programmers with no custom tunes. edge say it right in the instruction manual. they said the factory computer will adjust for running lean. They have me a little nervous but not too much since i returned the plugs for a full refund.
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