Just picked up a 2004 cobra used with 15,000 miles on her...i was just wondering what boost should it be at,because when im on it i'm pegging the boost guage at 10.Nothing looked like it was done to it so i was wondering did the previous owner had the car tuned some place.i dont have a externel boost gauge so i dont know how much boost im running...but i pegged the gauge when its time to go...lmao......  

The first thing you should do is track down the original owner. If you can't find him, just know that the car was probably tinkered with, smaller pulley possibly. My buddies 03 shows a little over 8 psi. Ihave also heard of some issues with the guage. You might want to take it to a REAL SVT dealer and have them check it. They are usually very helpful. Caution! Only go to an actual SVT dealer or you will be sorry.

B

You can't change boost pressure with a tune, so there must be an upper or lower pulley.