my 98 gst when ever i heavy accelarate the car hipcup a bit before it go, but when i slowly accelerate then it drive ok. anyone have same problem or can anyone help?

 

tune it.

 

Start with replacing plugs and wires.... Also mix about 9 gallons of gas to one gallon of lacquer thinner and add to fuel tank... Get bakk with us

 

i did have a mechanic look for boost leak and did change spark plug and wire and fuel filter and still same problem

 

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Its much better than most stuff in the stores.... Its also been proven if yu have a catalytic converter below threshold to help clean it and get it working again... The best mixture is 9 gallons of gas to 1 gallon of lacquer thinner.... For an added bonus for those wanting extra mpg... Add 3 to 4 ounces of acetone to your fuel when full and you will be amazed by increase of mpg