How much will the stock s4 fc fuel system support? Right now the car has k&n drop in, racing beat header and presilencer, and an rp catback. I want to port the motor, but don't want to have to upgrade the fuel system.

 

its good for about 200rwhp



mike

 

Just get the injectors cleaned at RC or Marren. If you port it big, you might want to get T2 secondaries and an SAFC. People have gotten 10-20 extra when tuning with the safc

 

Moral of the story, you set for a LONG TIME. Unless you go bp/pp..