When you are running more boost than the stock MAP sensor can see, you need to upgrade. The Omni Power MAP sensors fits the bill. They simply replace the stock MAP sensor and plug into the stock harness.
The Omni Power MAP sensors are good for temperatures as low as -40f to 260f. Going from 10% of the pressure scale to 90% only takes .001 seconds, which makes these sensors the fastest responding ones on the market resulting in far superior drivability.
This MAP sensor WILL REQUIRE TUNING.