If your'e slow, you need to find out why...I assume you have not tuned the car and you may be running really rich or really lean...You need to burn the fuel to make power, if you burn it all up really quick, you need to add more...If your'e soaking your turbo with fuel, then your'e too rich and need to pull fuel back...What Engine Controls are you using? Get on a Dyno and Pay for a couple runs with Lambda to figure out your weak areas...

Make sure you do a complete tune up before you dyno the car...That consists of Spark Plugs, Distributor Cap, Rotor, Ignition Wires, Fuel Filter, Oil and Oil Filter...

Pay for an hour of dyno time with Lambda and have someone that knows what they are doing tune your car...Don't tune it yourself until you are competent enough to do so...

Zee