Can our MAF be pressurized? In other words can it be after the turbo?

I have read a lot about it on the internet, but wanted to see if anyone here has any direct knowledge of the subject. Apparently this is a common issue when turbocharging a MAF controlled car.

It seems there are two major advantages to pressurizing a MAF system:

1. you can vta if the BOV is before the MAF

2. the MAF will be closer to the throttle body and will have more accurate measurements for the car to run on.

One person has told me they run their setup on the RA like this, and one person has told me it would damage the sensor. I am not talking about running Evo boost here, maybe only 8 or 10 psi. What does everyone think?

 

i think some people run without a MAF, i thnk i read a Greddy eManage will eliminate it ... ?

 

i do not know in this application specific BUT in my exp with s/c mustangs the maf (or mass in stangs) is always in that setup...
those sensors are built to take the abuse of the rushing air

 

I know it can be eliminated, but that costs money. I am looking at one of two options, having to rewire it so it's before the turbo or being able to pressurize it and keep it after the turbo, but venting the BOV to the atmosphere.

does the mustang use a karmen vortex type sensor? I am a little concerned about accurate measurements, but more concerned about damage to the sensor.

I can't imagine forced induction being able to destroy a sensor, but I don't know. Aside from not knowing I would experiment anyway if the sensor was a little cheaper. I was just hoping for more input from people who do know.

 

what about using an evo sensor? it should be like ours? or maybe a way to make it work...

 

Perhaps if you run a piggyback ECU or standalone with optional boost map sensor? In this way, the AFR and Ignition timing would be according to the boost at real time rather than at one MAF setting?

 

I dont think it will work this way because the original EVO MAF head sensor may be out of range to the original ECU's AFR and ignition timing. I have tried it on my JDM RA and it acted funny and trigger the CEL.

I could be wrong but I think a additional boost map sensor connect to either a piggyback or a standalone may be the better option.

 

better, but not what I am asking. In order to keep costs down I can still use my factory MAF sensor, but where I can use it is up for debate in this thread. Thanks for the information though.

Timing will be controlled by the ECU, which is why I want the MAF as close to the throttle body as possible, and my fuel will be controlled by the slit second psc-1.

The question here is can I locate the MAF in the boosted portion of the airflow, or will the pressure created damage the sensor or hamper the sensors ability to measure airflow?

 

Do a quick search or PM otter i know ive heard him say that it must go somewhere. pretty sure it has to be PRE-turbo but PM him to be sure.

 

There is a thread in the evo section of a guy running a huge turb0 setup. 67mm turbo with 600whp+ goals. He was running a blow through evo maf setup. He said the shop who built the car has already made over 600whp blowing through the evo maf. There is nothing in the maf that will get hurt when pressurized.

 

maybe just try and pick up a maf second hand or something and try with that, no matter what the result i am interested keep us posted

 

well I am going to see how it works. A member on here told me he has his custom turbo setup running like this, and it's common on other cars so there can't be too much of an issue.

 

I don't think the pressure will hurt it. If the air it's measuring gets too hot (non-intercooled setup), it might have problems with the heat more than the pressure. If your setup is intercooled, even the extra heat shouldn't be a problem.

 

Yeah I will be running an intercooled setup. I didn't even think about the heat difference, although it is something to think about. I am sure my MAF sensor is getting plenty of heatsoak from my SRI already

 

It's not only the heat, sometimes turbos release some little oil on the intake side and that oil will get to the MAF and **** it . There is a reason why your MAF shouldn't be pressurized and there is a reason no car comes with the MAF pressurized. Your MAF reads up to a certain cfm. Once it passes that CFM the MAP will take over. If you pressurize it all you are doing is giving more pressure and heat to it that's all. I think if you use enough heat you might damage the AIT sensor that is in the MAF it self. Better to map the MAF as a measure of MAP and then use the MAP values by rpm and output them to the MAF wires (emanage ultimate) or any MAF eliminator...
with this you can use any size of inlet intake you want