MAc intake and ProM Mass Air sensor

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Andy G

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2 questions, first, if I get a ProM mass air sensor, do I have to get the computer reflashed? I am going to eventually get an XcalII, but I am going to do the intake and all exhaust work first.

If I do have to reflash, I will do the Mass air and XcalII at the same time. If I do not have to reflash, I will get the MAss air and MAC intake first, followed by exhaust stuff......then Xcal



Second, I have got a job 1 ST. K&N specifies 2 different part numbers for job1 and job2 STs, Mac does not(that I have seen). Will the MAC work on either one or do I need ot call and specify when I am ordering that the MAC I need will be for a job1?
 
You won't have to re-flash because of the new MAF. Just make sure you disconnect the battery before you install it, then let the PCM re-learn the idle and your driving habits after you're done. Re-flashing with a custom profile is a good idea after all your mods, that way you can get the most out of your setup.



Sounds like you've got it planned right.
 
I'm not sure that an aftermarket MAF is available anymore. I seem to remember someone here saying that the manufacturer stopped making them. Can someone shed some light on this?:huh:
 
If you search this site for "Pro M", you will find a few threads that mention it is not made anymore, and one thread claimed C&L might be working on a replacement.



However, Explorer Express still has them on their website, see below.



Any ideas about the job1 vs job2 intake question?



Any word on the C&L mass air unit?
 
It's probably still on EE's web site because they haven't updated it in ages. There have been some discussions here about EE and discrepancies with their web site. If you call them, I'll bet you find that the MAF is no longer available.
 
I just checked C&Ls site and they don't show a part yet either..................................................





 
The MAC part number for Job 1 is #3606. There's also a project by Ron Brezina that was done on a Job 1 2001 ST, so that may be helpful when you get around to installing.
 
Granatelli and Pro-M were two companies that made MAS for the Trac. Pro-M is out of business and Granatelli no longer makes a MAS for the Trac.



I have a Granatelli. The quality was sub par and I will never buy anything from Granatelli again.





Tom
 
I have something working on the mass airs. Dont buy the Pro-M, they arent worth the money unless you can find one used for cheap :)
 
I agree with Tom. The stock MAF in your truck flows more than enough air for a naturally aspirated 4.0L engine. If you see ANY performance gain, I'll be extraordinarily surprised. The only time you should even be considering a larger MAF is if you supercharged or turbocharged the trac, even then, chances are that it'll still flow PLENTY.

I think the larger MAF is the single biggest waste of money, next to the turdnado (turbnado, tornado, or whatever it's called this week). If you look at the HUGE size of the MAF you have, just think of how much air can flow through there! I can guarantee you that your heads aren't that large. If you want to do something that's going to matter, change your heads, or the cam, or add a supercharger/turbo.

The XCal2 is the single best "bang for the buck" as far as a stock, or nearly stock Trac is concerned. Get that if you want to make it faster. Exhaust system would help too, but the XCal2 does much more than just make your trac run better.
 
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Well,

There are no Direct fit MAF'S out there... The universal ones require way TOO much modifications to get working...

As Wayne said, Give him a little time, I know he has something up his sleeve!!!!

The MAF does make an improvement in the truck especially after you have other mods to support it such as exhaust and an Xcal-2...

The stock computer setting can not adjust for the extra air introduced...and will cause a lean running condition.. This is why most members noticed no improvement from other MAF'S.

The intake tube is 3 inches and the stock maf shrinks down to under 2.5 inches.... This is enough to restrict air flow....

I strongly believe my trac would not be running the way it is now with out the maf and the adjustments Wayne Foy has made for me...

Todd Z
 
Thanks for the input guys, I am going to go ahead with the MAC part, then wait and see what Wayne has for a MAF when I am ordering my xcal2 from him.





By that time, the exhaust will be done as well.



cheers,

Andy
 
I was under the impression the 75mm Pro-M offered more than just, improved airflow. It was advertized to be custom calibrated to perform better than the stock MAF.



Was that bullshit?
 
Your intake system flows as much as the most restrictive part will flow. The throttle body is the restriction in the system. Look at it. It is tiny even compared to the Mass Airflow Sensor (MAS). They claim the different calibration makes a difference.



Honestly, I don't see how that is even possible. The MAS detects the ammount of air entering the engine and the temperature. If the numbers are accurate, how can a performance MAS improve performance if it gives the same readings a stock one does.



Wayne knows more about the Ford system then I do. Maybe he can explain how and why a performance MAS works to improve performance.



I am just using logic to understad how the system works. If there is a replacement throttle body available, I would say that would make an improvement. Unfortunatly the throttle body is much smaller then the stock MAS is.



Where is the improvement?



As I have said before, I have a performance MAS. I did not notice a difference between the stock and the performance one.





Tom
 
Actually, I have considered it. I am not really that serious though, to be honest.



I loaned a member here my stock MAS a while back. I know he will send it back. I am just waiting for my Escort GT's center arm rest to get completed.





Tom
 






Well, if you ever decide to move it...let me know!



Of course by then an alternative will be available from Wfoy, but maybe not...
 
Thanks Tom. I agree, the aperture alone shouldn't be the reason for changing the MAF. The Granatelli has the same sized opening as the stock unit, and the Pro-M is 5mm wider. I remember the Granatelli and the Pro-M both advertised performance calibrations, as a reason for upgrading.



I'd like to hear Wayne's take on this.
 
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The re calibrated MAF unit that they are selling changes the Maf values to the computer kinda "tricking" it to thinking that more air is entering and then the computer adds more fuel to the engine...

Thats how they get some HP from them, BUT that is half a$$ed way to do it... These values need to be adjusted in the computer for the TRUE air flow and not a false reading...



The Throttle body is 3 inches inside. ( at least mine is) So making the Maf meter larger will free up air flow....



If I have the time, The next dyno run i do, I will remove my MAF and put the stock one on and run the truck, Because when all is said and done, I know the larger MAF I have on there is getting me some more ponies !!!

Todd Z

 

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