Hi. I've been hearing light pinging at low revs (1,500 - 2,500) when accelerating away from a stop. You can see my mods in my signature. I'm guessing the PCM is too lean at partial-throttle openings at those rpms? When I look at the map it does show negative values at low throttle openings. My map is from Dynojet for a Akra pipe with stock filter. I haven't made any changes to it yet. Any suggestions? I guess I could start by enriching those partial throttle, low rpm values? Can you think of any other reasons for the pinging? Thanks.