Pinging/Knocking
I just bought a SCT XCal2 with a tune from VMPTuning. I have a 2001 GT with just the JLT Ram Air Intake but I got it mainly to turn off the MIL indicator for when I put on my MAC Prochamber and CatBack. That and to give my car a little more "giddyup" 
I am on my second tank of 93 octane so I figured it would be in the system enough to load my 93 octane tune. I do have more pep in the car but when I get on it, I am getting some pinging. It pings when I am at higher RPMs (4k+) or if I'm going 30 MPH in 3rd gear and give it some gas (basically floor it). Normal acceleration and cruising is fine.
Any thoughts out there as to what may be wrong? I figured I can rule out an exhaust leak since I haven't changed that yet and since it wasn't happening before I loaded the tune. The gas is from Exxon so I think it's good gas. The spark plugs are only about 2 weeks old and when I replaced them, the old ones looked fine. I'm not really sure what else to look for...

I am on my second tank of 93 octane so I figured it would be in the system enough to load my 93 octane tune. I do have more pep in the car but when I get on it, I am getting some pinging. It pings when I am at higher RPMs (4k+) or if I'm going 30 MPH in 3rd gear and give it some gas (basically floor it). Normal acceleration and cruising is fine.
Any thoughts out there as to what may be wrong? I figured I can rule out an exhaust leak since I haven't changed that yet and since it wasn't happening before I loaded the tune. The gas is from Exxon so I think it's good gas. The spark plugs are only about 2 weeks old and when I replaced them, the old ones looked fine. I'm not really sure what else to look for...
Crap, I meant to post this in the tech section. Can a mod move it?
97Targa: Does that still apply if it happens at the lower RPMs like I mentioned with the 30 MPH in 3rd gear and flooring it? It's low RPM for that.
97Targa: Does that still apply if it happens at the lower RPMs like I mentioned with the 30 MPH in 3rd gear and flooring it? It's low RPM for that.
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5.0HOBOMB
5.0L (1979-1995) Mustang
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Jun 25, 2006 12:23 PM




