how do i check if my car is leakin boost?
it used to hold boost on 15 when i first bought it but after i got my downpipe installed i rarely see the boost on 15, is my turbo spoolin different right now
whats the deal?

 

Boost Leak Tester

make one of those and pressure test the system.

did you use a gasket when you installed the dp? you also need to retighten the bolts on the dp after a few heat cycles. that would be the first thing to check, but it's always a good idea to check the whole system for leaks anyway.

 

If you've dropped 1-2 psi, I think that's a side effect of the downpipe. but like chick said, it never hurts to do a leak check. For our cars, a 2 inch plumbing coupler at Lowes is a perfect fit, comes premolded with clamps already installed.

 

i read in sport copact that the computer is set up for the stock piping. when the sensors see less back pressure the computer throws a fault cutting back on the boost to save the motor, because it thinks something is wrong with the car. They said they had to go to stage 2 , because it is designed with the mopar catback (which is bigger,and causes less backpressure) in mind. go to sport compact project srt-4 for more info. hopefully you will not the the stage 2. good luck