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Old 07-20-2013, 01:38 PM   #3
Chevy Fanatic
Join Date: Mar 2011
Location: DFW
Posts: 120
Originally Posted by ddck24 View Post
Shawn had Nick pull a spark plug and check the gap. It was gapped to big and the boost was blowig out the spark according to him! How many people would have even known this?!!

Nick gapped me some brand new plugs, replaced them right there on the dyno!!
Very next pull, with only changing spark plugs, it dynoed 786rwhp!!!!!
126hp gain with spark plugs!!!
With a couple more adjustments Shawn made a final pull at

What gap were the plugs at before and after the replacement?
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