if the effect that you are getting is like the car is stuttering, then it would pay to check out your spark plugs and leads, my 300ce was doing that. and $30AUD later i had 6 new sparkies and two leads.

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'Some Fear' because 'No Fear' means your not going fast enough.

300CE yr1988,
SL55Kompressor yr2002,
CLK320 yr2002.