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Here is something else to add, recently I just had a regular schedule service done. At 24000 miles dealer told me that part of the service includes spark plugs, I was like what? Really? The dealer said yes these high performance engines require spark plug replacement at a shorter interval. Really? Anyone else heard of this?
In any case prior to the service the car was not running strong, black marks around the bumper near exhaust top so I knew the injectors is messing up again. After the service the car ran just as slow and lack of performance which is what i expected because the adpative values needs to be reset every time anything is replaced, so the DME goes back to factory map setting.
After couple of days the engine really came back to life again, it's now pulling strong just like the way it should be.
So something to do with spark plugs too?
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