06black

guys our stock MAp senser is a 2bar correct???

than how are they still working with some of the guys way over the 15lbs mark that the stock sensor is rated for?

Jmc007

I achieved 22 PSI several times, I have the stock MAP sensor. Seems to be a 2.5 Bar.

06black

with the stock sensor it still reads fine? accerit?

zinner

If the stock sensor was 2 bar I wouldn't be able to read 15.5 PSI.

06black

so what is it than!!!!!!!!!!!!!!!!!!!!!!

ExHondaMan

Isnt 2bar=29psi ?

retrop

2 bar would be about 29 psi but that is including ambient pressure not just boost. So a 2 bar sensor can only really read 1 bar of boost (14.5 psi).

SCdyne

It's a sensor not a controller.
It converts a pressure signal to a voltage signal and that goes to the PCM.
The maximum signal range is 14.31 PSIG or 29.01 PSIA resulting in a 4.90 Voltage signal to the PCM.
Any pressure above 29.01 PSIA will still only show 4.90 Volts to the PCM, but as RPM increases (along with all of the other sensor inputs used in the fuel and timing) fuel and timing will still change. MAP input just becomes a constant frol that point on.

Since load (MAP) is a primary input for fuel and timing it will quickly become a problem if no other sensor inputs sum up to enough change for proper adjustement.
This is a primary reason why an OEM Tune and an Aftermarket Tune are so different. OEM makes room for the extreme conditions where most of the time the Aftermarket removes that safety in favor of performance.

clownhair

also the srt-4 only comes with a 2 bar map sensor and there are guys running 22 psi with the stock one (and some other tuning goodies)