how about a MAF screen that doesn't restrict flow? Impossible you say?

VAP · 04-13-2003, 02:35 PM

More than one way to skin a cat! First off this is very prototypical. Hasn't been tested but it's the next thing going into my car. The screen is stainless steel and just a smidge more restrictive than the stock screen. But due to it's location at the front of the hot wire sampling tube this deficiency should be somewhat compensated for. I also have several ways to increase it's flow if it were to lean out at high RPM's. And thats no illusion... it is a domed screen which should also help compensate for it's slightly more restrictive passages, ie; 12% less flow but 50% more surface area than the sampling tube.

Dunno if it'll work at this point but it looks great! I'll get it on and fiddle with it over the next few days, see what happens. It just could turn out to be a way to fine-tune the MAF without an electronic calibration or piggy-back system by streamlining and speeding up/slowing down the air across the hot wires samplers... within limits.

Besides if it doesn't work I'm no worse off than I was before I thought of this. I can always take it back to stock. But at least its innovation rather than imitation.

VAP · 04-13-2003, 02:38 PM

moribundman · 04-13-2003, 02:40 PM

One thing worries me, though. Since the goal of the MAF screen is to even out the airflow, it might not work well if the screen is too close to the sensor wire. I guess testing it will be the only way to find out. And testing is half the fun!

moribundman · 04-13-2003, 02:44 PM

Did you make the screen from a faucet's airator?

VAP · 04-13-2003, 02:47 PM

mounting this screen to a short extension tube that put it out front of the sampling tube a distance equal to the stock screen. Then I decided to give this a whirl first, see if it works. I can always make it more expensive and complex later but I would I feel awfully silly if I did that then one of you guys found it works just as well/better attached directly to the sampling tube. Gotta at least try cheap/easy before guilding the lily.

VAP · 04-13-2003, 02:52 PM

I bought 3 ea in 6 different mesh sizes in whatever diameters it took to get the different (smaller/larger) mesh sizes. And who knows... I may have to go smaller/larger mesh but I'm sure the right one is in there somewhere or with a small extension tube.

Dead · 04-13-2003, 03:10 PM

VAP · 04-13-2003, 03:13 PM

Dead · 04-13-2003, 03:26 PM

what do you think could get through the filter and not get through that?

MikTip · 04-13-2003, 03:32 PM

http://www.pro-flow.com/tech%20info/calprocess.htm

04-13-2003, 02:38 PM	#2
VAP AudiWorld Super User Garage is empty, add now Join Date: Mar 2000 Posts: 13,990	Pic 2: Thru the bore

04-13-2003, 02:40 PM	#3
moribundman AudiWorld Super User Garage is empty, add now Join Date: Jan 2003 Posts: 9,298	You sly fox! One thing worries me, though. Since the goal of the MAF screen is to even out the airflow, it might not work well if the screen is too close to the sensor wire. I guess testing it will be the only way to find out. And testing is half the fun! __________________ Mhmm, donuts...

04-13-2003, 02:44 PM	#4
moribundman AudiWorld Super User Garage is empty, add now Join Date: Jan 2003 Posts: 9,298	What did you use? Did you make the screen from a faucet's airator? __________________ Mhmm, donuts...

04-13-2003, 02:47 PM	#5
VAP AudiWorld Super User Garage is empty, add now Join Date: Mar 2000 Posts: 13,990	I've alread considered that possibility and came dangerously close to.... mounting this screen to a short extension tube that put it out front of the sampling tube a distance equal to the stock screen. Then I decided to give this a whirl first, see if it works. I can always make it more expensive and complex later but I would I feel awfully silly if I did that then one of you guys found it works just as well/better attached directly to the sampling tube. Gotta at least try cheap/easy before guilding the lily.

04-13-2003, 02:52 PM	#6
VAP AudiWorld Super User Garage is empty, add now Join Date: Mar 2000 Posts: 13,990	Yep. Ace hardware .750" stainless 89 cents ea.... I bought 3 ea in 6 different mesh sizes in whatever diameters it took to get the different (smaller/larger) mesh sizes. And who knows... I may have to go smaller/larger mesh but I'm sure the right one is in there somewhere or with a small extension tube.

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04-13-2003, 03:10 PM	#7
Dead Elder Member Garage is empty, add now Join Date: Jul 2000 Posts: 23,171	I hate to ask this ,but why?

04-13-2003, 03:13 PM	#8
VAP AudiWorld Super User Garage is empty, add now Join Date: Mar 2000 Posts: 13,990	the answer is first 9 words of the original post ;-)

04-13-2003, 03:26 PM	#9
Dead Elder Member Garage is empty, add now Join Date: Jul 2000 Posts: 23,171	I know but if you are just mounting it as a filter to keep debris off what do you think could get through the filter and not get through that?

04-13-2003, 03:32 PM	#10
MikTip AudiWorld Expert Garage is empty, add now Join Date: Jun 2000 Posts: 29,354	Re: how about a MAF that doesn't restrict flow http://www.pro-flow.com/tech%20info/calprocess.htm __________________ 2004 A4 1.8t USP Quattro 6MT K04-15/APR/TT 225 Injectors/Custom Stainless Exhaust/710N/RaceTec FMIC 034 HFC/Jet-Hot Cermi-coated & ported exhaust manifold Spec Stage 3+ with OE DMFW! Neuspeed TIP/Neuspeed Snub/Optima 75-35/AFE Pro-Dry/FSI Coils AMS Short-shift @ %40 redux(Sweet!) ST Coils/ H-Sport Anti-Sway bars/E-codes 19x8.5 OEM Audi Skinny Fives with 235-35 Bridgestone 760 Sport Skins B7 A4 brakes with StopTech Ceramic pads and Stop Tech rotors Sirius Satellite Radio Ross-Tech HEX-USB+CAN Equipped Escort 9500ix

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