turbo pressures?
Reading the boost gauge is really only going to tell you what the turbos are making, not if the system is properly sealed (too inaccurate for that IMO). If you have a serious boost leak you would know it already.
The new chip is going to make the turbos make more boost - that's when the gauge will come in handy. Chip it first and then check to make sure you're hitting the boost levels the chip is advertising. Should be around 17-20psi chipped.



