My 06 GT is pinging at 4K RPM under full throttle after installing a Bullitt intake and Brenspeed tune. I am running the 87 tune and after getting the pinging I tried running two tanks of 89 and one of 91 and it still makes a pinging sound. With 91 I didn't notice it until the 5K mark but it was definately still there.
I contacted Dave @ Brenspeed and he said that is really odd and that since they don't change the timing on an 87 tune it shouldn't ping at all. I don't remember it ever making the sound before the intake/tune, but I am surprised that running 91 octane wouldn't take care of it.
Has anyone else experienced a problem like this? Could I be hearing something else? It sounds like pebbles being shaken around in a tin can.
My only thoughts now are to put the stock intake back on and load the stock tune and see if it still has the problem.
I contacted Dave @ Brenspeed and he said that is really odd and that since they don't change the timing on an 87 tune it shouldn't ping at all. I don't remember it ever making the sound before the intake/tune, but I am surprised that running 91 octane wouldn't take care of it.
Has anyone else experienced a problem like this? Could I be hearing something else? It sounds like pebbles being shaken around in a tin can.
My only thoughts now are to put the stock intake back on and load the stock tune and see if it still has the problem.