If you are chipped, and using a stock MAF, it should report a corresponding increase in HP. A chipped car will draw more air than a stock car (running higher boost means more air is passing over the MAF).

 

im stock

 

The first time Mike and I took it out it showed me a 247 HP and about 289lbs of torque.
I only tried it one other time and got 253hp and 287lbs of torque. Hmm, my HP went up and the torque went down. Oh well, got to try again when it's a tad cooler for better intake charge

 

You will see big variations depending on the ambient temp and how you are driving (how hot the intake temp is).

In winter I have hit a peak of 273bhp, in summer its 265bhp.

 

i hit 21.7psi 220bhp 257tq, iat topped 125, oil temp 197... yea i like this gauge, and it clears my annoying cat code