Back at the Mass Air stuff

[Martin0660]

I'm finally back working on the mass air stuff, New mass air sensor mounted in 3" tube.............




My car WILL come out next spring running on mass air. When I plumb up the new turbo, there will be no provisions for VAM.

Bob Myers

[97LaserRed]

thats the best way to do maf! thats wat i got on mine slot style ftw!!

[map351]

It's about time!
Nice Welds..

[Martin0660]

slot style ftw!!

Real sweet sensors for sure. Real stable, easy to tune it seems.

It's about time!
Nice Welds..

I know, I know, it's all about time ;) Found out this summer I liked racing more than I liked working on the car ;)

It looks like the welder knows what he is doing ;)

Bob Myers

[lib88stang]

You got all winter to get this to work, so hurry.

[somethingclever]

So....if I time this right you'll have all the bugs worked out and ready to help tune another one?

[yeahloh95]

Mass-air > Vam

[Martin0660]

You got all winter to get this to work, so hurry

At the pace i'm working, it's still going to be tight ;)

So....if I time this right you'll have all the bugs worked out and ready to help tune another one?

If all goes to plan, we can line thme up and knock them down. Doing it car by car is possible now, what I'm trying to do is making it more cost and time effective for us all.

Mass-air > Vam

Not if it's not tuned right ;)

Bob Myers

[Martin0660]

Well, back at this. Some of the hold-up has been "software" related but we now have a freaking awesome definition file now for the LA3. To this point, it's been mostly pieced together stuff, but what I have now is perfect. All of the code needed for the MAF t owork right is written, the MAF curve is now a straight forward table, and the other tuning constants are called out and tested. I have a frigged up ankle right now, but as long as that clears up by christmas, my plan is for my car to be RUNNING on MAF by the new year.






If any of the 5.0 guys read this and are using TwEECer or other chips, I could really tune A9L stuff now because that deffinition file is sweet too (we are just catching up with 2.3 stuff). No more "MAF calibrated to injectors" BS, just enter the real injector size and MAF curve.

The Tweecer owner really missed the boat by not making their software work well and keeping up with user developements. This software talks to TwEECer, EEC tuner, or can burn right to Moates Chips. This blows their software out of the water.

[yeahloh95]

thats awsome i hope its up and running soon

[lib88stang]

Awesome Bob

[Martin0660]

Took some time today to finalize the wiring and such. Got the adapter harness(es) built, everything is ready to go. Lot's of soldering and shrinking in this. I ran out of good electrical tape, so need that to finish the sprial loom. Might change that to split loom if I can get the diameters I want at the parts store ;)




I used weatherpack connectors for mine. We wouldnt needs these for every one, but I like them :D If anyone wants them they can be scavenged from GM stuff at the junkyard or bought new.



Basically two harnesses will be involved. A 2 pin set that will go to a power relay to power the MAF itself. This will need to be fed directly from the battery, and will use a relay off the coil to turn that on.

Second harness adapts the VREF, VAM, VAT from the factory harness to the MAF set-up (both MAF and ACT are in this sensor). This will make it plug and play to our stock harness with no cutting. Everyone save any old Vane meters you might have. They can be either large or small, but I need the connector out of them to make the adapter harness.



The way I have this set-up, I can run off the stock VAM if desired, change over to the MAF to road tune, then if it's frigged up, swap back over to the VAM to drive again. Getting real close to dyno time to check how close my base tune will be. If it would warm up a little I would get this on the car running real soon.

[yeahloh95]

thats looking great

[Martin0660]

Fixed up the looming tonight ;)




"Stock" sensor in there for mock-up, but PMAS ready to go ;)



Next step is on the car :D

[somethingclever]

Ahh...I see it's a blow through MAF....sweet!

So I thought this was still in a product development stage....not plug it in and I know it'll work stage. That said, quit looming and get it on the dyno!!!


Impressive work Bob.

Maybe I missed it, but the MAF sensor is from what Ford vehicle(s), or generation?

[yeahloh95]

I think its an 05 and up gt slot type meter,

[Martin0660]

Yes, blow through. It can be used as draw through as well, and likely would be easier, but it is so much cleaner to read mass air before the throttle body. It eliminates so many issues with leaks, blown off intercooler pipes, blow off vavles, etc, then add in measuring the real flow to the engine.

Developement is to get to the point it will plug and know it will work :D We will see, we have had several cars close, mine will be the latest with the revised set-up. I know it will start and run, the open question is how much does the mass air transfer need tweeked. As i said, I know it wil lstart and idle, and be okay at WOT, the question is if it can be driven.

The sensor shown is a slot sensor from a '05 up Ford (actually that one is from a Focus). In early testing we found they are limited to 300 HP in a 3" pipe before pegging. The real sensor that will be used is a modified slot sensor supplied by PMAS. It is built to be good for up to 600 HP in a 3" pipe (although our data says 545 in blow through). The sensor is pricey, but has a number of advantages. You basically will never outgrow as all you need to do is go up in pipe size to be able to read more HP of flow (ratio of pipe volume versus sensor sample). also the slot sensors are way more tolerant of vibration than others.

[CobraII]

Wow Bob, impressive work.


ChuckT <---- draggin' knuckles on the ground, grunting "Me use carb."

:D

[Martin0660]

ChuckT <---- draggin' knuckles on the ground, grunting "Me use carb."

LOL, yeah, what do I know. I'm just a hillbilly trying to bracket race a 4 cylinder, turbo, stick car (and going faster than a lot of V8 guys) :D :D

[CobraII]

And you're doing a damn fine job Bob. I think that's far far from hillbilly though.