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