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Originally Posted by worldcrafter
To be honest, I dunno what pinging/detonation sounds like, though while on the highway, I can hear a loud, random metallic ticking at like 60-65 mph (sounds like 2 coins being slapped together). I am thinking it actually may just be a loose part on my car, I'll have to check to make sure. I may also have to borrow my friend's compression tester again, to see if my motor's actually getting owned from the inside. Last time I checked (before turbo install), all 4 cylinders were reading 165 psi.
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Detonation sounds like when one has marbles in a metalic container, from what you are telling me it sure sounds like the car is detonating. To be certain look at you plugs and see if you see any black peppery flakes on the porcelain. Also another sure indicator is to drain the oil and see if there is a nice silver finish on top of the oil as it settles in the oil changing pan.
If you need me to point you to a little device (which is easy to construct) in order for you to hear closer detonation in the engine let me know.
Alberto
