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Old 01-10-2010   #2
mdost03
 
Sonic Champion!
Join Date: Jul 2005
Location: Litchfield
Drives: VA STI
Posts: 1,793
Re: Upgrading from NGK BPR9ES from BPR6ES.

Quote:
Originally Posted by blackrosenova400 View Post
Try running non projected spark plugs, they help prevent pre-detonation as the ground electrode is shorter and is less likely to get hot and pre-ignite the fuel.

Id go with BR7ES's at .026 gap
This.

When I had my DSM, I ran that plug and it worked great to help with a little knock I was receiving.
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