When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I have an LQ4 out of a 2005 Savana 3500 that I'm installing in a 51 Pontiac. I've purchase a cheap cold air intake that has a 4" tube/elbow/filter etc. that "you add your stock MAF sensor to between the tube and filter housing".. Unfortunately my MAF sensor/housing is not compatible - housing is no where close to fitting (yes I should have looked into this before purchasing intake). So far trying to cross-reference the part number 20825481 is coming up with nothing. Real estate is extremely tight so their is no way of utilizing any of the stock setup.
Can I simply source a different MAF sensor that fits the tube and has the same pinout to get it working? Is this something that can be "re-calibrated" when I have my tuning done??
For custom intake hose and tubing I use Intakehose.com. IIRC they are out of Spokane WA.
Kind of a weird looking MAF. Would a say a 05 2500 Silverado 6.0 MAF work/fit better?
Yah that' what I'm thinking - grab one from Silverado or whatever. Just trying to find out how specific or matched the sensors are to the computer, or does it not really matter.
Funny thing is the throttle body is 100mm, but the ductwork reduces to 3"
Google '4" maf housing' and there are $35 4" tubes with mounting for a blade-style MAF. Google '4" MAF' to see kits of the housing and the blade MAF.
With a blade-style MAF, any time the tube diameter changes, you need to re-tune the MAF values.
IMHO, this is better than trying to fit an integrated-style MAF+Tube into your custom setup.
Google '4" maf housing' and there are $35 4" tubes with mounting for a blade-style MAF. Google '4" MAF' to see kits of the housing and the blade MAF.
With a blade-style MAF, any time the tube diameter changes, you need to re-tune the MAF values.
Beware that the blade MAFs have a different connector. It's still a 5-pin, flat connector, but it's larger, AND IT IS NOT PINNED THE SAME.
I had to deal with this on a swap I'm working on.
Thanks for the additional info; I will try to remember that in the future.
This is an example of why this forum is great - one person makes a suggestion but overlooks a detail; someone else then fills in that detail.
Hey turd, You can get the common early 5 pin Delphi MAF sensor brand new on Amazon for under a hundred bucks and it should play well with your erector set cold air kit.
I put one of these in generic amazon Silverado cold air kit and it worked perfectly. If you are running a stock engine and stock PCM it will be plug and play no tuning.
Delphi AF10043 Mass Air Flow Sensor.
Edit adding picture of MAF sensor.
Last edited by Mr. Black; Jan 31, 2025 at 09:48 PM.
Hey thanks everyone for the input and suggestions. Trying to marry 50's technology to 2000's sure brings a lot of questions - great to have a forum like this for support !!!!
Hey turd, You can get the common early 5 pin Delphi MAF sensor brand new on Amazon for under a hundred bucks and it should play well with your erector set cold air kit.
I put one of these in generic amazon Silverado cold air kit and it worked perfectly. If you are running a stock engine and stock PCM it will be plug and play no tuning.
Delphi AF10043 Mass Air Flow Sensor.
Edit adding picture of MAF sensor.
Ok we finally got to a point where I can start the motor installed. I got a new AF10043 sensor but the existing connector wasn't compatible. Bought the correct connector and compared the wiring schematic of mine to one for a Silverado, and noticed the pinout are wired reverse, so I wired as below. But the motor runs like crap. Disconnect the MAF and things improve significantly.
So 2 questions
1. Can someone confirm the pinout for the AF10043 to confirm my wiring is correct?
Pin A - MAF Signal
Pin B - Power
Pin C - Ground
Pin D - AIT Signal
Pin E - AIT Power
2. Is this something that tuning will/can correct - can you program a different sensor??
just going from memory but i think the savanna has a different MAF sensor than the trucks. So if your tune is set up for the savanna MAF, then its not going to be correct for the MAF that you just installed AF10043 .
just going from memory but i think the savanna has a different MAF sensor than the trucks. " Correct - thats why I'm in the situation " So if your tune is set up for the savanna MAF, then its not going to be correct for the MAF that you just installed AF10043 .
So is this something that can be corrected with tuning?
So is this something that can be corrected with tuning?
As long as the wiring matches the PCM it can be. The curve just needs to be correct or corrected for the combination.
I am now running an LS3 card style MAF in the truck above and when I switched connectors I not only had the wiring order backwards but totally mixed up.
I knew it was wrong when it would just start and die. (maf only tune at the time).
Once I corrected the wiring I was able to get the MAF tune correct.
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.
Need some schooling on MAF sensors 
" So if your tune is set up for the savanna MAF, then its not going to be correct for the MAF that you just installed