that first pic is the MAP sensor

 

Ran back to my car to see where I went wrong. Apparently, what I first thought to be the MIVEC solenoid is the PVS (right under the circled sensor).

Also Crans, why does the 4G69 have both a MAF sensor and a MAP sensor?? Always thought it was one or the other, not both?? Why even bother with the MAF sensor if there's a MAP??

 

I had this issue a while ago and it turned out to be the filter yes just the filter I had got a great deal on a foam filter...do not run a foam filter unless you have a piggyback you can tune with. The STFT was WHACK.......

 

Mass Airflow Sensor meters the amount of air entering the motor, the Manifold Absolute Pressure sensor reads the static pressure inside the intake manifold...air pressure is important, because it changes with altitude and atmospheric conditions, and plays a big role in density...if you know your flow and pressure density can be calculated...not sure if the MAP is used in barometric calculations or if there is a separate sensor, but it sure would help if you live in the mountains

 

IMO MAP would be used only as reference since MAF makes density correction, there are other sensors which read only volume air. Mass air reads temperature and volume (that makes a cross reference with density) when reading the actual mass of the air.

It's funny, I have vacuum boost installed on my Ralliart, you should watch your vacuum when starting from cold and see the car revs at 1500 but vacuum can go 10 in Hg.

Trying to do the same myself would rev the engine a lot haha.

Edit:

I posted this because our 4g69 has a Mass airflow sensor. The 4g63 has a Volume airflow sensor.

 

Seems 2nd gen Dsm's had a Manifold differential pressure sensor.

Link : http://members.shaw.ca/dsm.1000q/Eng...mer/2G/mdp.htm

Is that the same with the RA?

 

ok...they all look the same, physically....but you are correct a DSM manifold pressure sensor is differential, not absolute...not sure why, but i do know that the 4G94 has a volume air flow sensor and we have a mass air flow sensor, and both engines use a MAP sensor...

i replaced mine with a 3 bar MAP sensor it, measures boost pressure above and beyond atmospheric, which is what you would get at WOT...

 

There's a rumor that originally our Ralliart (04-06) was thought to be turbo'ed while being designed in Japan. At last it wasn't but they took the Outlander 2.4L and used the Eclipse V6 MAF.

That's the main reason why our MAF has a strange Vortex way of working maps while the Evo has the MAP/Octane/Knock based fuel maps.

Still all of this signals only work at WOT, other times the O2 sensor is doing it's work of closed loop.

 

Its the ecu it senses to much air from the aftermarket air filter to much air means lean . Put the filter you had on when that code dident pop up