MAF: Which to use for what application

[heptone182]

Not sure if I can remember this question being asked but, I'm wondering which MAF off which vehicle or aftermarket are people running on their cars and for what application? The reason I'm asking is, personally, I'm about to run an arc-2 setup with 750cc injectors and I want to swap the stock MAF to something that would pair nicely with those mods. Matt recommended a 2000 or newer SVT Lightning OEM MAF. Obviously I trust his judgement, I'm just wondering what you all have setup and your thoughts on what you based your decision off of.

[TurboSinceBirth]

Not sure if I can remember this question being asked but, I'm wondering which MAF off which vehicle or aftermarket are people running on their cars and for what application? The reason I'm asking is, personally, I'm about to run an arc-2 setup with 750cc injectors and I want to swap the stock MAF to something that would pair nicely with those mods. Matt recommended a 2000 or newer SVT Lightning OEM MAF. Obviously I trust his judgement, I'm just wondering what you all have setup and your thoughts on what you based your decision off of.

The MAF he is talking about is a 92mm plastic Ford MAF on the Lightnings and Cobras. I currently have one with the ARC-2. I will either be keeping it with the ARC-2 zero'd out as a MAF upgrade when I install the flashed ECU or I will be using an EVO 8/9 MAF instead. It all depends on what engine management setup you want to use as to which MAF you end up with.

ARC-2: Ford MAF sensors and housings. There's quite a few but the ones sold with the kits are 87 and 92mm currently. 83mm used to come with it a long time ago.
MAFT: GM MAF 3" or 3.5"
Flashed ECU: EVO 8/9 MAF with a pigtail harness and two value changes in the ECU makes it drop in. You can use any other piggyback with it such as ARC-2 or GM MAF & MAFT for the MAF upgrade but that adds more expense than the EVO MAF itself.
The other piggybacks use speed density.

What are you mods and desired power output? That would help us with choosing the right MAF for you.

[heptone182]

Well currently I'm running DR-16T's, FMIC, Walbro fuel pump, straight through borla exhaust with a stillen DP and gonna be swapping in those 750cc injectors. I do have a 87mm Granatelli MAF sitting in a box for a 96-98 Mustang GT, but not sure of my limitations with it. Plus since its calibrated for the GT at for 19lbs/hr injectors, not sure if it's a good idea since the SVT MAF's are set at 24lbs. That's another thing... what is the conversion from cc/min to lbs/hr? Not sure I understand that too much. Shooting for 500whp

Update: found the conversion on cc/min to lbs/hr plus the explanation on Jeff L's site here
http://www.stealth316.com/2-injectortypes.htm

[TurboSinceBirth]

Well currently I'm running DR-16T's, FMIC, Walbro fuel pump, straight through borla exhaust with a stillen DP and gonna be swapping in those 750cc injectors. I do have a 87mm Granatelli MAF sitting in a box for a 96-98 Mustang GT, but not sure of my limitations with it. Plus since its calibrated for the GT at for 19lbs/hr injectors, not sure if it's a good idea since the SVT MAF's are set at 24lbs. That's another thing... what is the conversion from cc/min to lbs/hr? Not sure I understand that too much. Shooting for 500whp

If it came with your ARC-2 it should work fine. Even if I didn't I don't see any problems. I don't think it matters as much what injectors the MAF are calibrated for because the ARC-2 itself adjusts the fuel curve for different injector sizes. I'm surprised you didn't go with 550cc injectors since 750s are a little big for DR-16Ts. I pulled my ARC-2 off a DR-16T 550cc setup that made great pump gas numbers. Running a larger injector than you need with a piggyback will advance the timing which is going to bring on knock sooner resulting in running less boost on pump. If you're on race gas or ethanol it won't really matter.

As far as the limitation of the 87mm MAF I wouldn't worry about it. It's probably good for 7-800hp. I know Matt has said before when he switched to the 92mm MAF but he was pushing quite a bit of power. The difference in hp gain between the two is going to be very small until you upgrade to some bigger TD05 or T3 turbos running all out. You won't be able to max out the 16T turbos on that MAF.

[heptone182]

I'm probably gonna do the E85 conversion here soon as well, so I'm probably gonna be sticking with those 750cc's for future upgrades as well. That'll probably be when I switch to the 92mm MAF then. Thanks Michael

[J-Groove]

Good breakdown of information in this thread.

-John

[heptone182]

Good breakdown of information in this thread.

-John

Hope it helps a bit. I'm still curious as to some of the others' MAF setups and opinions. I just learned that the 87mm Granatelli MAF was an old "big bore" option for the arc2-gp back in the day. I guess it'll pair nicely then.

[PaulL]

Does the arc2 compensate for temperature change? I got rid of the MAF-T years ago and went back to stock because I didn't want to have to retune the car when the temeperatures changed.

[Chris@Rvengeperformance]

Does the arc2 compensate for temperature change? I got rid of the MAF-T years ago and went back to stock because I didn't want to have to retune the car when the temeperatures changed.

although it is debated, the arc2 does generally suffer from the same temperature swings that maft does.

[TurboSinceBirth]

The IAT and BARO is fixed on the ARC-2. Being a hotwire sensor technically it should be able to compensate between colder and hotter air but I've always had to retune for large temperature changes. It's quick and easy. Throwing in some ethanol or other fuel no matter the mix it only takes a few minutes before I'm tuned again.