ECU has no calibration
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Did you torque down the plate correctly? I saw that you removed the fuel rails from the keg. do you think you might have a vacuum leak? A vac leak will let extra air in that is not monitored by the map sensor to adjust fuel trims and will lean out the a/f charge. You might try spraying a little soapy water on the tops of the injector bosses and see if you get any bubbling while running the engine. That could indicate a vac leak due to a bad injector o-ring.
There's a few things that cause pinging and one is bad ignition wires. I had that all the time for a long time and all it was: cheap 7MM Belden / Napa wires that were junk.
On some Dodge trucks, there was an engineering issue with ignition wiring layout. There's two fixes: one is to reroute the wires per this bulletin that Dodge put out years back and the other is to upgrade to 8.5MM wires. That's probably where your pinging is coming from. It creates a misfire condition that is well known with some years of Dodge trucks. http://autorepair.about.com/cs/faqs/l/bl654h.htm
The other thing that will cause that is plugged or partially clogged fuel injectors. This throws the fuel / air ratio out of whack causing some of the cyls to run rich on the fuel and some very lean. This also creates knocking as well as pinging.
A clogged or partially clogged CAT will also cause the same thing due to excessive heat backs up into the rear two cylinders causing the plug to overheat. When they overheat, they create a misfire condition thus causing pinging.
So, as you can see, there's a few possible causes for pinging.
Good luck in tracking it down.
On some Dodge trucks, there was an engineering issue with ignition wiring layout. There's two fixes: one is to reroute the wires per this bulletin that Dodge put out years back and the other is to upgrade to 8.5MM wires. That's probably where your pinging is coming from. It creates a misfire condition that is well known with some years of Dodge trucks. http://autorepair.about.com/cs/faqs/l/bl654h.htm
The other thing that will cause that is plugged or partially clogged fuel injectors. This throws the fuel / air ratio out of whack causing some of the cyls to run rich on the fuel and some very lean. This also creates knocking as well as pinging.
A clogged or partially clogged CAT will also cause the same thing due to excessive heat backs up into the rear two cylinders causing the plug to overheat. When they overheat, they create a misfire condition thus causing pinging.
So, as you can see, there's a few possible causes for pinging.
Good luck in tracking it down.
