That is very good to ask you about this car.
Once I took my car, it was very powerfull in performance.
Then I have driven my car for one week and I notice that
the performance of my car start missing, Then the mechanic ask me
to change the plug and I changed again. The car became good but
not as once I drove it. On other word, I don't fell that I am driving an
8 cylinder even 6 cylinder.
I notic that as well, the pedal not smooth as first drove.
Could you inform me about this problem