TDStuart Tuning Adventure

[Pistol_91]

He is saying the MAF sensor opening should be pointed towards the throttle body, not towards the filter.

Sponsored

 

[markmurfie]

I got mine fairly recently and I think its the plastic one as I remember the two being very similar the small one was just much harder to get on

The lund version I am running is like R1 that they fixed my paddle shifting issue on. So I don't think lund is seeing this issue and putting a bandaid on it. So maybe its just a tune issue I need to account for?

The Lund log you posted is saying your are at 5500Ft elevation barometric pressure and the manifold is getting 2-3PSI of boost....

MAF matches load, but MAF numbers are low just like load is low.

 

[tdstuart]

He is saying the MAF sensor opening should be pointed towards the throttle body, not towards the filter.

I don’t know how that would work the maf wouldn’t read the airflow.

 

[GregO]

So in my example to maf slot would be pointed east?

I think your east is my inside so yes.
Do a redlined markup of a screen shot and post it to verify we’re on the same page here.

The MAF housing is omnidirectional so I don’t get why orientation matters but if Terry is saying they seen that it does matter I’d take his word for it and clock the MAF housing slot exactly as he says.
At this point you have to try. And close up the fog light and gorilla tape your melted holes in the fender liner for repeatable testing results.

 

[Pistol_91]

I don’t know how that would work the maf wouldn’t read the airflow.

Thats what he is saying... i believe.

 

[Pistol_91]

The Lund log you posted is saying your are at 5500Ft elevation barometric pressure and the manifold is getting 2-3PSI of boost....

MAF matches load, but MAF numbers are low just like load is low.

Thats impressive from an N/A car at .7 air load

 

[tdstuart]

The Lund log you posted is saying your are at 5500Ft elevation barometric pressure and the manifold is getting 2-3PSI of boost....

By your “….” I assume that isn’t correct but I have no reference if those numbers are far off or not. 2-3 psi of boost does sound high.

If you are looking at the latest Lund log I posted (possibly only on this thread), temp was 88*F, altitude was 1626ft and d/a was 4264ft.

 

[tdstuart]

Thats impressive from an N/A car at .7 air load

An n/a car running 11.8 60-130 too lmao.

 

[Pistol_91]

You might want to pull the sensor out and see which way its facing

 

[tdstuart]

I think your east is my inside so yes.
Do a redlined markup of a screen shot and post it to verify we’re on the same page here.

The MAF housing is omnidirectional so I don’t get why orientation matters but if Terry is saying they seen that it does matter I’d take his word for it and clock the MAF housing slot exactly as he says.
At this point you have to try, and close up the fog light and gorilla tape your melted holes in the fender liner for testing purposes.

Here is a terrible drawing haha. I think this is what you are saying.
E = engine
Blue circle is the filter (it is basically in the fenderwell pointing down)
Green arrow is pointing towards the right side of the car, the head of the arrow is the connect end of the maf sensor.

 

[tdstuart]

You might want to pull the sensor out and see which way its facing

The part you circled is facing down towards the filter. I don’t think you can put it in backwards as it won’t read the airflow

 

[markmurfie]

By your “….” I assume that isn’t correct but I have no reference if those numbers are far off or not. 2-3 psi of boost does sound high.

If you are looking at the latest Lund log I posted (possibly only on this thread), temp was 88*F, altitude was 1626ft and d/a was 4264ft.

Manifold pressure may briefly spike above Barometric on a tipin, but to be steady 5 inHg above isn't possible. It usually 1-2 inHg below barometric, less in a good flowing NA intake system.

 

[GregO]

Here is a terrible drawing haha. I think this is what you are saying.
E = engine
Blue circle is the filter (it is basically in the fenderwell pointing down)
Green arrow is pointing towards the right side of the car, the head of the arrow is the connect end of the maf sensor.

Yes, that’s how I interpret Terry’s instruction for MAF sensor placement.

 

[GregO]

Manifold pressure may briefly spike above Barometric on a tipin, but to be steady 5 inHg above isn't possible. It usually 1-2 inHg below barometric, less in a good flowing NA intake system.

At what vehicle speed is this pressure reading ?

 

[tdstuart]

Yes, that’s how I interpret Terry’s instruction for MAF sensor placement.

PMAS shows it facing towards the rear of the car in everything I have seen from them. I could always call support and ask

Sponsored