Mass Air Upgrade: Final Update pg2... January 07, 2008, 04:35:39 PM Or... Where to get a cheap 70mm MAF.Lately I've been looking at some simple and cheap (especailly cheap!) areas I can improve the performance of my car. I got to thinking about the stock 55mm MAF which for a stocker or minor bolt on car is fine. On my engine it's the final restriction of the intake path that I haven't dealt with. Basically since I'm using 19# injectors I just wanted a larger meter that I can install my stock electronics on. I sure didn't want to pay $180 for a C&L meter housing much less over 250 for the one that comes with that prettly aluminum elbow. SCREW THAT! LOL... So I started researching over at the Corral and learned that the 94/95 Mustangs came stock with a 70mm meter. Sweet! Too bad no-one is selling one at the moment. So I did some more looking around and found out that a few other Fords use the same meter/injector combo. Here's the list that I came up with:94-95 Mustangs V8 or V692-94 Crown Vic 4.692-94 Town Car 4.692-94 Grand Marquis 4.6I went to my favorite local yard today. There was not one single SN Mustang but I did find 2 meters on 4.6 Town Cars. It seems the secret is out though because there were only those 2 meters out of about 20 Town Cars and Crown Vics. Anyway, I scored them both for $15 because they didnt have change for a 20 but he had five ones, heheh...They're not a bolt on proposition though. I've got to do a little modification. You'll notice in the pics that it has a square bolt on . I've got to take them up to work tomorrow and cut off the corners and then grind it round with an aluminum wheel... No biggie.Once I install it I'll update the thread and let you know how it worked out.In the mean time. Here's some comarisons with the stocker. Quote Selected
Mass Air Upgrade: Final Update pg2... Reply #1 – January 07, 2008, 05:05:38 PM http://www.foxtbirdcougarforums.com/showthread.php?t=17529http://www.foxtbirdcougarforums.com/showthread.php?t=17465 http://www.foxtbirdcougarforums.com/showthread.php?t=17422Have you looked and read around here? Quote Selected
Mass Air Upgrade: Final Update pg2... Reply #2 – January 07, 2008, 06:14:22 PM But what you are not considering, is that large sampling tube blocking airflow in the center... Truth be it known, I'll bet it doesn't flow any more than a stock 55mm Stang meter... Same ones were on the '96(maybe earlier) 300 6cyl's... I have one and have run it on the '93 Grand Marquis, works fine... Quote Selected
Mass Air Upgrade: Final Update pg2... Reply #3 – January 07, 2008, 07:16:16 PM Quote from: TurboCoupe50;196320Truth be it known, I'll bet it doesn't flow any more than a stock 55mm Stang meter... The info that I found was this:58mm 606 cfm 70mm 815 cfm I figured 200 CFM is worth a few bucks and a little effort.Quote from: kitzdnm;196306Have you looked and read around here?One is pending sale, one is sold and the other is way more than I would want to spend. How would that have helped me at all? Quote Selected
Mass Air Upgrade: Final Update pg2... Reply #4 – January 08, 2008, 08:22:24 AM Ok IF those figures apply to that style meter...BTW my '95 4.6 Tbird has a meter like that, but uses the Mustang mounting... It croaked shortly after I got the car and I stuck a Stang unit on it... Checking to see if it's another problem, but it runs pig rich rich on cold idle(below 45*)... Suspect it isn't cal'd correctly.... But it seemed OK at first, even the CEL turned off by it's self, then came back on a few days later... Now has a code 171, prior had a 102.... Quote Selected
Mass Air Upgrade: Final Update pg2... Reply #5 – January 08, 2008, 03:27:06 PM OK, the results are in and it was a well worthwhile mod. There are no idle or driveability issues. I still pulled 17in/hg vac at idle. The car definitely felt stronger from about 4K to 6K. I figured it would be worth something because the 55mm MAF meter was the final choke point in my induction system. So I figured if some was good then more would be better... right?WRONGDO NOT DO THIS...I took the other meter that I had and cut out the bar running down the middle and ground it down nice and smooth. Looks like this baby could flow some air, lol! Then I installed it and fired it up. The first thing I noticed is that it idled like it had a big cam and vac dropped to 15". It also smelled rich... Bad sign! I let it warm up and took it for a drive. There was NO power above 3000 RPM. So much for that experiment. I put the other 70mm (the one with the bar) back on and chunked this one in the recycle bin... the car once again ran like a champ. The above pictured meter is now s aluminum but for $7.50 it was worth finding out in the name of science, lol...One tool you will need for removing your MAF sensor from the housing is a T20 anti-tamper Torx bit or driver. I bought mine from NAPA.Overall it's a great cheap mod that works. Cutting and grinding round the mounting is labor intensive without a bench grinder but if you have the time and tools it's worth it. Probably not on a close to stock engine but on mine it was. Just dont remove the bar down the middle! It should look like this when you're done... Quote Selected
Mass Air Upgrade: Final Update pg2... Reply #6 – January 08, 2008, 03:36:58 PM By taking the center section out more air passed through the MAF. However the calibration tube could not compensate for it without being altered in some way itself whether it be by tuning your EEC or some other method. In theory if you put the electronics for yours in a Ford 80 MM housing it SHOULD work without issue, that is if you do not alter the housing in any way..... Quote Selected
Mass Air Upgrade: Final Update pg2... Reply #7 – January 08, 2008, 03:44:24 PM Quote from: V8Demon;196474By taking the center section out more air passed through the MAF. However the calibration tube could not compensate for it without being altered in some way itself whether it be by tuning your EEC or some other method. Interesting.Quote from: V8Demon;196474In theory if you put the electronisc for yours in a Ford 80 MM housing it SHOULD work without issue, that is if you do not alter the housing in any way.....It worked great on the 70mm. If only I could find an 80mm in the junk yard. I'd try it in a heart beat since they only want $10 for MAF housings. An 80 would require larger diameter couplings though. I had to work to get them over the ends of the 70. Quote Selected
Mass Air Upgrade: Final Update pg2... Reply #8 – January 08, 2008, 08:53:35 PM Good tip on the Mass Air meters.I'll be grabbing up all of the 70's at the boneyard that they have this Friday.Maybe I can make a couple of bucks or trade them for something else i need. Quote Selected
Mass Air Upgrade: Final Update pg2... Reply #9 – January 08, 2008, 09:28:03 PM Quote from: vinnietbird;196572Good tip on the Mass Air meters.I'll be grabbing up all of the 70's at the boneyard that they have this Friday.Maybe I can make a couple of bucks or trade them for something else i need.You could probably sell them as is and let the buyer modify or buy the adapter. Someone sells a bolt on adapter for them. I forgot who. I was gonna try and sell my 2nd one for $30 (that seems to be the going rate on the internet give or take a few buck) but I decided to experiment with it instead.Good luck though... Because like I said above it seems like the secret is out down here in DFW. I could only come up with 2 of them out of alot of cars. You might have better luck up there though. Quote Selected
Mass Air Upgrade: Final Update pg2... Reply #10 – January 08, 2008, 09:45:17 PM I'll sell them for $25.00 shipped. Quote Selected
Mass Air Upgrade: Final Update pg2... Reply #11 – January 08, 2008, 10:06:28 PM Quote from: Dogcharmer;196473OK, the results are in and it was a well worthwhile mod. There are no idle or driveability issues. I still pulled 17in/hg vac at idle. The car definitely felt stronger from about 4K to 6K. I figured it would be worth something because the 55mm MAF meter was the final choke point in my induction system. So I figured if some was good then more would be better... right?WRONGDO NOT DO THIS...I took the other meter that I had and cut out the bar running down the middle and ground it down nice and smooth. Looks like this baby could flow some air, lol! Then I installed it and fired it up. The first thing I noticed is that it idled like it had a big cam and vac dropped to 15". It also smelled rich... Bad sign! I let it warm up and took it for a drive. There was NO power above 3000 RPM. So much for that experiment. I put the other 70mm (the one with the bar) back on and chunked this one in the recycle bin... the car once again ran like a champ. The above pictured meter is now s aluminum but for $7.50 it was worth finding out in the name of science, lol...One tool you will need for removing your MAF sensor from the housing is a T20 anti-tamper Torx bit or driver. I bought mine from NAPA.Overall it's a great cheap mod that works. Cutting and grinding round the mounting is labor intensive without a bench grinder but if you have the time and tools it's worth it. Probably not on a close to stock engine but on mine it was. Just dont remove the bar down the middle! It should look like this when you're done...Im wondering why you had problems?? I did that very same procedure on my 98 mustang gt and 98 cobra and never once had a problem. Quote Selected
Mass Air Upgrade: Final Update pg2... Reply #12 – January 09, 2008, 07:18:22 AM Quote from: slicksport88;196585Im wondering why you had problems?? I did that very same procedure on my 98 mustang gt and 98 cobra and never once had a problem.Yes and I thought I read a write-up somewhere doing that exactly. Quote Selected
Mass Air Upgrade: Final Update pg2... Reply #13 – January 09, 2008, 11:56:04 AM Quote from: slicksport88;196585Im wondering why you had problems?? I did that very same procedure on my 98 mustang gt and 98 cobra and never once had a problem.I'm wondering why it worked at all...Since the MAF is dependent on a set ratio of air flow through both the main body and the sampling tube, changing the size of the main opening is approx equivalent to trying to run a set of 14lb inj in a 5.0HO...In other words guys, if you're cuttin on a MAF housing, you're fornicatekin' up... I believe Dog proved the point... Quote Selected
Mass Air Upgrade: Final Update pg2... Reply #14 – January 10, 2008, 07:17:35 AM Quote from: TurboCoupe50;196700I'm wondering why it worked at all...Since the MAF is dependent on a set ratio of air flow through both the main body and the sampling tube, changing the size of the main opening is approx equivalent to trying to run a set of 14lb inj in a 5.0HO...In other words guys, if you're cuttin on a MAF housing, you're fornicatekin' up... I believe Dog proved the point...Yea you’re that does make since but I know I read write-ups on it don’t know how they made it work. Maybe playing w/the FPR or the ECM up injector size. I don’t know or maybe they got lucky. Quote Selected
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