Jump to content

Performance Maf Sensors

dubai911

Recommended Posts

dubai911 Enthusiast

dubai911

Posted
Posted

I hear people talking about the need of replacing OEM MAF sensors with better ones.

 

The talk is that you will need to do this mod eventually after you've done intake / throttle body / echaust / etc. to ensure better reading once you get better flow in/out the engine

 

 

I will greatful if any one would like to share the experience/knowledge

 

 

 

JET performance Powr-Flo MAF sensor

 

 

17992.jpg

 

 

thanx in advance!

Draenor Senior Enthusiast

Draenor

Posted
Posted

It will help if your are putting high HP to the ground, otherwise dont waste your money. If you do get this you also a larger intake and TB, and intake runners.

Schmids5.3l Senior Enthusiast

Schmids5.3l

Posted
Posted

That is a stock MAF with no screen. Pointless. Unless your running a monstrous air intake hooked up to a monstrous after market throttle body on a fully built engine pumping in more air than imaginable on a stock set up, and the stock unit won't fit because of that intake tube, it's pointless. :thumbs:

xsports33 Enthusiast

xsports33

Posted
Posted

they're pretty useless. most aftermarket MAF's are the same size as the stock one, the difference is that there is programming "embedded" in the MAF that tells your PCM that it's colder than it really is so it dumps more fuel creating more power. Hence, you get the biggest gain (which is minimal anyway) when you do a true CAI w/a MAF. Save your money and get a custom tune that could do the same thing and more

dubai911 Enthusiast

dubai911

Posted
  • Author
Posted
they're pretty useless. most aftermarket MAF's are the same size as the stock one, the difference is that there is programming "embedded" in the MAF that tells your PCM that it's colder than it really is so it dumps more fuel creating more power. Hence, you get the biggest gain (which is minimal anyway) when you do a true CAI w/a MAF. Save your money and get a custom tune that could do the same thing and more

 

 

now i've ordered intake + throttle body spacer + edge evo... will it help??

Schmids5.3l Senior Enthusiast

Schmids5.3l

Posted
Posted

I'd send the throttle body spacer and the evolution back. You can get a cheaper and better tune on the dyno, and throttle body spacers are equal to that MAF mentioned earlier. But if I was forced into buying a hand held programmer, I guess I'd choose the evolution.

Draenor Senior Enthusiast

Draenor

Posted
Posted
I'd send the throttle body spacer and the evolution back. You can get a cheaper and better tune on the dyno, and throttle body spacers are equal to that MAF mentioned earlier. But if I was forced into buying a hand held programmer, I guess I'd choose the evolution.

+1

 

 

 

 

 

 

 

 

 

 

...on a side note. Since everybody wants to buy TB spacers, I need to start making 'em. $5 worth of material to make $45 of profit.

FREAKENHYE Enthusiast

FREAKENHYE

Posted
Posted
I'd send the throttle body spacer and the evolution back. You can get a cheaper and better tune on the dyno, and throttle body spacers are equal to that MAF mentioned earlier. But if I was forced into buying a hand held programmer, I guess I'd choose the evolution.

 

I with you on this one.

 

The only thing i would use a spacer is for N02 nozzle. MAF is worthless, tunning is the only way to go with a nice CAI. The rest well like Schmid said.

 

Right now my mpg has gone down big time since i swaped a CAI. I have to reprogram it to get the full benifits.

 

Airflow changes on the vehicle with a CAI, Exhaust, and headers.

Everything you add to your vehicle that has something to do with hp gain needs to be compensated for by the ECM. Once i get my headers, and camshaft in there, i will have it dyno tuned. Once that is done, Im set. All together the tune, headers, exhaust, CAI, and camshaft should net me about 80RWHP if not more. If i get to mill the heads and raise the compression to 10.5:1 then that would be another 10hp. All in all its better to go the rout im going then to waste money.

Krambo Enthusiast

Krambo

Posted
Posted
they're pretty useless. most aftermarket MAF's are the same size as the stock one, the difference is that there is programming "embedded" in the MAF that tells your PCM that it's colder than it really is so it dumps more fuel creating more power. Hence, you get the biggest gain (which is minimal anyway) when you do a true CAI w/a MAF. Save your money and get a custom tune that could do the same thing and more

 

Pretty good explanation. Doesn't the aftermarket MAF sensor fool the PCM into thinking it has a much colder intake charge hence dipping into the IAT spark advance table? By adding the couple of * spark advance you most likely will net some HP on a fairly stock truck. That's my take anyway.

 

I see your mods and imagine your max out your stock MAF in the upper RPM range as well. I rescaled my MAF frequency table to compensate for this (controversial but it works for me).

 

Most people who plan on outflowing the stock MAF typically go to a SD (speed density) tune which doesn't use the MAF calculations for its fueling and such. Some radical guys that want to still have the MAF tuning ability try the 100MM Lingenfelter unit. Heard mixed reviews about that one.

 

If you are a stock truck looking for some fun easily added modifications then an aftermarket MAF is fine. I would prefer to spend my $$$ on a custom tune that will deliver like 2-3x more bang for the buck.

Draenor Senior Enthusiast

Draenor

Posted
Posted
Most people who plan on outflowing the stock MAF typically go to a SD (speed density) tune which doesn't use the MAF calculations for its fueling and such.

Kevin hit it on the nose.

dubai911 Enthusiast

dubai911

Posted
  • Author
Posted
they're pretty useless. most aftermarket MAF's are the same size as the stock one, the difference is that there is programming "embedded" in the MAF that tells your PCM that it's colder than it really is so it dumps more fuel creating more power. Hence, you get the biggest gain (which is minimal anyway) when you do a true CAI w/a MAF. Save your money and get a custom tune that could do the same thing and more

 

Pretty good explanation. Doesn't the aftermarket MAF sensor fool the PCM into thinking it has a much colder intake charge hence dipping into the IAT spark advance table? By adding the couple of * spark advance you most likely will net some HP on a fairly stock truck. That's my take anyway.

 

I see your mods and imagine your max out your stock MAF in the upper RPM range as well. I rescaled my MAF frequency table to compensate for this (controversial but it works for me).

 

Most people who plan on outflowing the stock MAF typically go to a SD (speed density) tune which doesn't use the MAF calculations for its fueling and such. Some radical guys that want to still have the MAF tuning ability try the 100MM Lingenfelter unit. Heard mixed reviews about that one.

 

If you are a stock truck looking for some fun easily added modifications then an aftermarket MAF is fine. I would prefer to spend my $$$ on a custom tune that will deliver like 2-3x more bang for the buck.

 

 

 

 

Thanks for the info Kevin!

custom tuning is down below in my list since I'm looking for more control in performance/economy. I think edge evo is enough for the time being.

 

Since performance MAFs do fool the PCM regarding air temp (only?); does the car get affected in a bad way because of inaccurate figures? maybe not balanced A/F ratio?

 

If I knew all this info I wouldnt have bought the MAF - returning it now will cost me some $$$ so I'm still thinking if it's worth keeping it. I got it for $260

 

 

 

how much MPG/HP gains should I expect for the MAF? :D

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

  • Recently Browsing   0 members

    • No registered users viewing this page.

  • Forum Statistics

    250.4k
    Total Topics
    2.7m
    Total Posts

  • Member Statistics

    342,840
    Total Members
    8,960
    Most Online
    appletrav
    Newest Member
    appletrav
    Joined

  • Who's Online   5 Members, 0 Anonymous, 342 Guests (See full list)

  • Latest Articles

  • Posts

    • PhilB
      No 12v outlets in 2026 gmc Sierra

      By PhilB · Posted

      It is possible to add your own 12v outlet to your truck.  Check out this video:   I verified via GM Upfitters that pin 31 is the same on the 1500 trucks.  The wire is GM part number 84779405.   You can get the GM 12v outlet from Amazon  https://www.amazon.com/Genuine-Accessory-Receptacle-25774623-13549530/dp/B0F1H9YRGF EWAY 12 Volt Power Adapter for GM   https://www.amazon.com/EWAY-Chevrolet-Silverado-Cigarette-Ignition/dp/B0915RRW6Q/ref=sr_1_1?   I just haven't figured out a good place to put the 12v outlet in my truck.   Some people are getting USB-C to 12V adapters  https://www.amazon.com/WYMECT-Cigarette-Lighter-Socket-Adapter/dp/B0F87WNQKB/ref=sr_1_1_sspa? Not sure if they provide the correct amperage that a device like a tire inflator would need.  
    • Core-Lokt
      Wiring Help, Please

      By Core-Lokt · Posted

      Thanks; I looked there a few minutes, and I think I can find something. I really never looked there, as I thought it was stuff like PTO/aftermarket bodies/accessories like snow plows.
    • newdude
      2 speed transfer case optional now?

      By newdude · Posted

      This is a 1/2 ton thing ONLY.  All HDs 2020-2026 have the two speed transfer case, with Autotrac as an option.     1/2 tons 2019-2026, regular 4x4s come with a single speed case (no 4LO!), and trucks with Z71 ordered, or all Trail Boss trucks come with the 2 speed case.  2 speed case is also an option on WT, and is also standard on High Country.  
    • newdude
      Different requirements for oil filters?

      By newdude · Posted

      2013 5.3 still to this day calls for the PF48 filter.  Which as a 15psi bypass pressure.     There is a TSB, 17-NA-157 that talks about the PF-63 and PF-64 filters which have a higher bypass rating of 22psi.    TSB HERE - temp.xml   "Beginning in 2012, the oil pumps began to regulate main gallery feedback instead of pump out pressure. This means that the oil pump now does not begin to regulate until pressure is built up to the main gallery. This change reduces the amount of time it takes to provide oil to the engine bearing and lifters during extreme cold start conditions.  Main gallery feedback oil pump control systems are present on the following engine families which use Spin-on oil filters: Small Gas Engine (SGE), Large Gas Engine (LGE), High Feature (HFV6) Gen2 and Small Block Gen5 gasoline engines. These engines with the main gallery feedback oil pump control systems are factory built with an ACDelco® oil filters"   It also calls out what engines use those filters.  The gen 4 small blocks were not on that list (LMG, LC9, L9H, L92, L94, L20, L96).  Gen 5 small blocks use the higher pressure filter.          That all said...   Your 7045 Napa filter is the PF63 equivalent, with 22psi bypass.  You are already using the higher bypass pressure filter.  You CAN keep using it, you don't technically have to use it though.  
    • Grumpy Bear
      Different requirements for oil filters?

      By Grumpy Bear · Posted

      Do you know WHY the filter relief setting was increased to 22 psig?    When the new system goes into the second stage the pump volume ramps up considerably. It was found that the 15 psi filter bypass setting put the filter in bypass on a warm engine when the second stage was activated. Raising the filter bypass setting forced the filter to do what it designed to do. Filter. Preventing debris from circulating during high load, high rpm operation.    So next question is how did GM find this out? VLOM/lifter failures and a deep dive by Melling Corp.    Last question. Is it required? Look at it like this; a motor may be equipped with a rev limiter. But it only works if the set point in reached. That 22 psig setting only matters if the pressure differential across the filter media exceeds 15 psig during normal warm operation. Second stage kicks in around 3000-3500 rpm.    I can't answer your question because I don't know you and how you use the truck. But I think there is enough information here to let you decide for yourself. 😉

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...