I'm not sure why it would matter, as long as you account for uneven flow and mount it the same way every time it will be fine, even possibly make a bracket to bolt it to so it can be held in proper position all the time like SLP intakes use.

Alternatively, running 2 mafs, and then averaging the signal from both would also work and avoid some of that problem, if you want to pay for 2 mafs...

 

I already have 2 MAFs (1 on my 87 GTA & 1 spare from a 89 GTA) and want to build a SLP-style dual intake, like what they used on the MAP Firehawks.

But I have no clue how to wire in 2 MAFs & combine the signals, for the ECM to read correctly.

 

Just have to build a tiny voltage divider using some resistors to cut voltage directly in half but that doesnt really do anything for you... one sensor would still run the motor just fine. 2 just looks better but does not give you advantages

 

Look better & double the AVAILABLE air flow area. Do I NEED double? No.

But I already have an extra "free" MAF & the look it would give under the hood....

Cutting a signal in half should be easy, but adding them together afterwards? If you splice a 12v power to a 12v power, you don't get 24volts.

 

I did this back around 93-4? I never had time to finish mine, well get it on a running motor.
Glad to see some of you have!
I need a bigger Maf as I needed a touch more air 4 my na combo..

 

True, I think I have that wrong. I was never good at circuits and its been along time since i had to do that stuff. If you have two output voltages wired together i thought it added up. V1 + V2 = Vtotal. IF that was the case, then you wire both MAF voltage outputs together and cut in half to average. But total resistance through the wiring i guess changes voltage for a given current so i'm not sure.

 

There two MAF setup seems like easy to me. Just plug in only one MAF and double the airflows in the MAF tables, of course, in order to double the values, the MAF scalars would need to be doubled. I think that that is straight forward.

 

I considered that when I thought about doing it, but you could end up in situations in a turn or with a strong crosswind... where one side gets more flow than the other and without summing/averaging you could end up with significantly different readings than actual airflow.

 

Yea, what I suggest is assuming that both MAFs "see" the same amount of air flow at any moment in time.

 

Trying to determine the proper way to run a larger MAF with stock electronics and modified code, hashing it out right here in front of my eyes 3 years after you told me you KNEW how to do all this. Hilarious.

Good luck.

 

madmax, if your comment was aimed at me, I have been running a 3.5" MAF (MegaMAF) for several years now without any hickups. Works awesome with the stock electronics and the factory ECM. All that I needed to do was to be able to alter the MAF scalars. TunerCat does not allow this (at least not 3-4 years ago); so I switched to TunerPro and like magic, there are the six MAF scalars for me. I still have never hacked the code or do any "patches". However, I must admit that my MegaMAF is not a huge benefit in the Hp game. In fact, I think that those with a 350 or 355, should never bother with it. For a 350 or 355, the stock MAF w/o screens is plenty of air.

 

nah, it is aimed at me. Back when I was doing the boost $8D code I looked at the MAF stuff and had a good feel for it. It has been a long time since I did that and I forgot a lot of the stuff we were talking about here.
That guy thinks a MAF is the greatest thing and holds it very dear to him along with the misconceptions about it. Of course, no added useful info. was given just like the posts of past.

 

I want you all to know that madmax is one of the most knowledgable guys on thirdgen; he has been here along time, giving great advice on many topics. madmax has always had my respect as a thirdgen guy. For the record, I am a MAF guy also. Thats is why I have stuck with the MAF for so long. However, the best system (IMO) is the MAF/MAP system on my '99 Camaro SS. Of course over there, we have up to 100mm diameter MAFs. I am running one now on that car, its a 402 LS2 stroker. I would run that MAF on my '87, but its not compatable.

 

I believe in using what ever works for you. Be it Alpha-N, MAF, MAP, carb.

 

Yes, I also Agee with you.
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I finally went back and checked some records. I ran my fastest time 12.12 sec ET with a descreened factory Bosch MAF. Aint that interesting!