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- Feb 2, 2010
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Hey fellas, so I have been all go no quit doing some upgrades to my GT500. Wasting no time. I don't believe in leaving plugs in for more than 30k miles, so I went and picked up some Motorcraft SP405's, which is what it calls for stock. I felt a little misfire and some sputtering here and there. Anyways, took the plugs out and this is how they came out:
![](/proxy.php?image=http%3A%2F%2Fi785.photobucket.com%2Falbums%2Fyy139%2Favinaj80%2FA52EE662-471C-48F7-BC3D-D303AE03FFC1.jpg&hash=58d32d30ddfdd43784420233891e815c)
![](/proxy.php?image=http%3A%2F%2Fi785.photobucket.com%2Falbums%2Fyy139%2Favinaj80%2FEA5F67A6-8549-4C8D-8EEA-D2580B7F076A.jpg&hash=fb19644e16a10d100b509eb6228c45a2)
Car is bone stock. No CAI or tune yet. Car is running much better now and throttle response has become more crisp. Those are pretty shot for a car with 29k miles on it... What do you all think?
![](/proxy.php?image=http%3A%2F%2Fi785.photobucket.com%2Falbums%2Fyy139%2Favinaj80%2FA52EE662-471C-48F7-BC3D-D303AE03FFC1.jpg&hash=58d32d30ddfdd43784420233891e815c)
![](/proxy.php?image=http%3A%2F%2Fi785.photobucket.com%2Falbums%2Fyy139%2Favinaj80%2FEA5F67A6-8549-4C8D-8EEA-D2580B7F076A.jpg&hash=fb19644e16a10d100b509eb6228c45a2)
Car is bone stock. No CAI or tune yet. Car is running much better now and throttle response has become more crisp. Those are pretty shot for a car with 29k miles on it... What do you all think?