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 am looking for some information about moving the MAF to a location directly in front of the throttle body.
I am in the process of planning for Nitrous. One kit I have looked at intigrates the spray into the MAF. However, it just does not seem like a good idea to fill up the airbridge with fuel and Nitrous. I'm told it's OK but I just don't like it.
I would like to know what it takes to move the MAF to a location similar to the F-Body or C6 setup. I have a 2004 so the harness is no problem. What changes in intake hoses and the airbridge are involved?
If you move the MAF next to TB then it will get hotter and cause confusion to the PCM's calibration.
I would not force NOS through the MAF for it could cause the exposed sensor wires to break and also confuse the PCM as the true airmass and temp or air it also would effect if the MAF is a 85 mm that has the intake air temp sensor built in.
Best is NOS nozzle in airbridge closest to TB.
If you move the MAF next to TB then it will get hotter and cause confusion to the PCM's calibration.
I would not force NOS through the MAF for it could cause the exposed sensor wires to break and also confuse the PCM as the true airmass and temp or air it also would effect if the MAF is a 85 mm that has the intake air temp sensor built in.
You have a point about the newer MAF's with the intergraded IAT sensors. But I'm not sure that moving the MAF closer to the motor would cause a problem. In some GM cars, the MAF is actually intergraded inside the T/B. But I guess it couldn't hurt to be safe and have a retune after relocating it.
What does moving the MAF do? Does it help anything?
Moving the MAF/IAT right next to the throttle body will give a more exact reading of amount and temp of the air that is going in. Better throttle responce and easier A/F ratio to tune for.
So how hard would it be to do this with almost any of the air intakes out there? (Vararam, Blackwing etc. ) As far as I know the Honker is the only one that does move it, not including the C6 of course.
When I installed a better 'intake', I relocated the MAF right next to the throttle body.
Keith
This is what I am looking to do. Where did you find a source for the hoses that couple the intake components together? I don't want to have to pay $50 every time I need 4 inches of 90mm hose.
My real goal here is to keep the mixture out of the airbridge.
Moving the MAF/IAT right next to the throttle body will give a more exact reading of amount and temp of the air that is going in. Better throttle responce and easier A/F ratio to tune for.
Keith
Not more exact since GM setup the PCM with all the testing they did and what the air temps and airmass was
Moving this is not the same as those with a pre 2001 model that has a 75 mm MAF and those with a 2001 and newer 85 mm MAF because they are a different length and the 75 mm MAF is all metal so it would heat up more then a 85 mm MAF with plastic end
Then its dealing with the MAF's splitter is vertical where the butterfly of throttle body is horizontal, now butt the 2 together and see there is now 4 quarter openings
Use a thermal probe and you'll see the temps are as much as 25 degrees hotter by the TB as down where the aircleaner is and having MAF closer only will fool the PCM as to GM's calibration.
I think GM moved the MAF for C6 not for performance but simply needing more free space to use dual airfilters.
Can't you cut the wires for the integrated IAT sensor and splice in the the older style IAT sensor into the MAF harness? That way you can mount the MAF close to the throttle body and still have the IAT sensor reading the cooler air, mounted forward of the MAF. Do a search I'm sure people have done this. If you happen to have a Blackwing filter, you can remove the dirty filter sensor and replace it with the IAT sensor .
Sure but the MAF also measures air temp to compare to the one it heats up and in the end making it all fit would not see any real gains.
The stock coupler between TB and airbridge is 3 3/4 inches long, if your using a 75 mm MAF its about the same length so making it fit would not be easy plus the airbridge is over shaped where MAF is round.