supercharger problem

[dean4.6]

I put a v-s vortech supercharger on my 1998 2v GT, with 30 lb igitions and 10:1 fmu, fuel pump. The problem is when the car is cold it is hard to start and when it start it runs like **** until it heats up. It also idoles up and down but has a alot of power going down the road.
any one have this problem? Dean

 

[Bolt on 5.0]

Dean you should bring the car and have it dyno tuned. This should eliminate most or all of your problems.

 

[98GTfromGA]

yeah you need to a tune

 

[Dirty_D]

Did it come with a tuner? Your car will run rough with out a proper tune.