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2001silverado364
Guest
I haven't seen it today, so nothing. Still debating whether to put my 91 octane tune on it or leave the 87 one on there.
Go 91I haven't seen it today, so nothing. Still debating whether to put my 91 octane tune on it or leave the 87 one on there.

how much were they?? and let me know how they work out for you...i want to upgrade mine too!I was gonna change my spark plugs, but the engine is still frikkin hot as fWONk.
I picked up a set of Delco iridium plugs from Advance the other day.![]()

how much were they?? and let me know how they work out for you...i want to upgrade mine too!I was gonna change my spark plugs, but the engine is still frikkin hot as fWONk.
I picked up a set of Delco iridium plugs from Advance the other day.![]()
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