Quote:
Originally Posted by erald01
the thing is that i have a dsm link also but i wanted to run it with the keydiver chip till i get used to the dsm link, but i did burn the boost gauge as the knock sum but i have no idea what the knock sum is all about can some one explain it briefly.. 
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You do know that you can't run the keydiver chip and DSMLink at the same time, right?
Knock sum - On DSM's, the gauge will normally rest on the "-7", for 0 knock sum. It will rise 5 knock sum per division on the gauge, so "0"=5 knock sum, "+7"=10 knock sum, and "+14"=15 or more knock sum.
You want to see knocksum less than 5, which is basically between the first and second line (knock sum of 0-5) on the stock boost gauge coded to see knock sum. When you start to pull timing, you'll normally see knock (retard). 2Gs and 1Gs will retard 1 degree of timing (knock retard) for about 3 knock sum.
More info here -
knock what is a sfe knock and what would be a bad knock?
There was a thread somewhere about how the knock sum on DSMchips.com website was wrong, but I can't find that thread anywhere.