Another Pinging problem!! 20 dollar Paypal reward if you can fix it!!! No Joke!!

v6v8swap said:

Mustangman94, I don't see how that a small exhaust leak at the header would cause the ping. But, could it be that you're hearing the exhaust leak instead of a ping? Exhaust leaks can sound a lot of different ways (if that makes any sense?). That could be the whole problem in itself.

Grady, I think that maybe the ping you fixed with the heads was from
the messaging that you did on the combustion chambers. It probably wasn't much, but it could have opened them up just enough to lower compression slightly. Just a thought.

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JimTMich said:

I've had the same problem and I agree that our computers just seem to be on the edge from the factory. My car has always pinged, just gets worse over time.
I'm now running about 5 degrees base timing. new MAF, IAC, ECT, fuel pump and filter, plugs, wires.......... fuel pressure is 38 with hose disconnected.
There is a post somewhere here where a guy did a simple mod to his maf basicly fooling the computer into thinking more air was flowing than really is. This makes the car run richer (with o2's compensating during closed loop) and he was able to crank his timing up like the 93 and older cars. I haven't tried the mod. It's about the same as getting an adjustable fuel pressure regulator, but free.

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