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Old 03-20-2013, 10:56 AM   #10
lab rat
Registered User
Join Date: Apr 2010
Location: Vancouver
Posts: 2,445
My Ride: '02 330iT
Well, they haven't been able to help me so far. They sent me couple different tunes but the problem won't go away.
I thought of incorrect base timing. But wouldn't that throw a code?
It's not pinging all the time. Doesn't seem to ping more when it gets hot. Pings less when it rains.
The sound was confirmed as a ping by people with tuning experience. Also it went away when I used race gas.

Here is a dyno chart (from mustang dyno with load) that shows timing but I guess I would need better diagnostics to see knock sensor info.

Because sleeper

Last edited by lab rat; 03-20-2013 at 10:57 AM.
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