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I've been noticing an intermitent ping in my 6 at around 5K RPM's. Today, I bought a timing light and checked my timing. Well, I'll be! It was somehow at 12 degrees BTDC, when stock is 9! So, with the extra boost I'm running, I figured it might be a good idea to retard the timing a little. I tried a few different settings, but 8 degrees BTDC seemed to work the best for me. Now, no more ping, seems a little more powerful too, but it is a lot cooler out lately, my car loves this:D
 

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I agree and that is where mine is set at with 12 psi boost. The car just seems to like it better unless I run race gas; then I can put it up to 10 or 11. A good idea is to check your plugs after making mods, they can tell a lot if you read them right.
 
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