GM/MAF Translator questions

[NoRiceTSi]

I did a few searches and didnt really find what I was looking for...

If I got a GM maf and a ramchargers translator and installed the maf in the upper i/c pipe, would anything have to connect to the intake? I was thinking of doing this and then making a custom cai coming off the turbo and running it somewhere away from heat, the gm maf will be installed between the bov and tb on the upper i/c pipe, so I would be venting to the atmosphere, eliminating a need for a return line from the bov

is this how it would work?

thanks for clearing thing up for me, i'm still a newbie

 

[Blk_99gst]

Yes that's prety much how it works. You don't need any time of air measuring device on the intake anymore, since the gm maf measures the air just before the throttle body. You can vent your bov without running rich, and yes you can put the filter to the turbo anywhere you want; just be careful that if it rains or if there's puddles on the ground, you won't suck up water into the intake.

 

[LaserRST]

I am under the assumption that the GM MAF has some way of measuring boost as well as flow for this to work post turbo. I am not clear as to how a hot wire MAF works vs a Karmen vortex. I know the Karmen device uses the vortices through the honeycomb to measure air counts. Is the hot wire similar? My huge concern is how accurate this device is as far as measuring boost. The supras have hot wire MAF and yet i never hear of them mounting this post turbo to vent the BOV. Though im not on the Supra forum and know little about Supra Tuning. Maybe some one can clear this up for me. I already tried emailing Ramchargers with no response and can almost feel their eyes rolling as I wrote the question down. Thanks in advance.

 

[LaserRST]

I am under the assumption that the GM MAF has some way of measuring boost as well as flow for this to work post turbo. I am not clear as to how a hot wire MAF works vs a Karmen vortex. I know the Karmen device uses the vortices through the honeycomb to measure air counts. Is the hot wire similar? My huge concern is how accurate this device is as far as measuring boost. The supras have hot wire MAF and yet i never hear of them mounting this post turbo to vent the BOV. Though im not on the Supra forum and know little about Supra Tuning. Maybe some one can clear this up for me. I already tried emailing Ramchargers with no response and can almost feel their eyes rolling as I wrote the question down. Thanks in advance.

 

[UNFORGIVEN GSX]

Well, the GM MAF doesn't actually calculate boost. It just measures the flow of air running through its hot wire. The platinum wire is heated to around 212 degrees above the incoming air temperature. The air flowing past it has a cooling effect which causes an increase in current to keep the heating element at 212 above the outside temp. The cooling effect varies DIRECTLY with the temperature, density, and humidity of the incoming air charge. So, the current change is proportional to the MASS of the air entering the engine. That then goes to the ecu for calculations.


Rob

 

[miden]

So I'm kinda a newbie too. Why (other than the rice factor...) is it good to vent to atmosphere?

-M

 

[HyperGSX]

Originally posted by miden
So I'm kinda a newbie too. Why (other than the rice factor...) is it good to vent to atmosphere?

-M

There's no other reason to vent besides the fact that it sounds cool

 

[workin_on_it]

someone should do a write up on this and make it sticky in the forum.....with all the in fo on these bad boy devices. like how to install, if you can use it to tune a/f mixtures, etc...i have a non turbo, but when i start soupin it up a bit, i might get one of these as well because of the air flow increase and fuel adjustability.

 

[UNFORGIVEN GSX]

Venting to the atmosphere is pretty much just for sound. That is why I'm doing it. I ordered a Greddy Type-S BOV cause my friends sounds awesome in his DSM. However, I suspect that I might get a better airflow count by mounting the MAF right by the throttle body elbow, because it will take into account the aircharge temp after the turbo and any air which may be lost through a leak. That is just a theory of mine.


Rob

 

[Bd1000Eclipse]

Originally posted by UNFORGIVEN GSX
Venting to the atmosphere is pretty much just for sound. That is why I'm doing it. I ordered a Greddy Type-S BOV cause my friends sounds awesome in his DSM. However, I suspect that I might get a better airflow count by mounting the MAF right by the throttle body elbow, because it will take into account the aircharge temp after the turbo and any air which may be lost through a leak. That is just a theory of mine.


Rob

exactly.. have you ever blown an intercooler pipe off before? how about on the interstate in the middle of no where.. acutally have you ever blown a coupling in half? i have.. thats one of those times i wished i had the gm maft.. you can still drive the car because the maft is reading the air right by the TB.. this is why i ordered it, to bad its a 2-3 week wait on it wherever you go..

 

[UNFORGIVEN GSX]

I don't think there is a wait on the 2G version. I could be wrong though.
Maybe I'll guve Dejon tool a call and see. They never contacted me to say it was on back order.

Rob

 

[Bd1000Eclipse]

Originally posted by UNFORGIVEN GSX
I don't think there is a wait on the 2G version. I could be wrong though.
Maybe I'll guve Dejon tool a call and see. They never contacted me to say it was on back order.

Rob

ramchargers told me a 2 week wait till it was shipped.. dejontool told me less than 1 week till it was at my door.. whats up with that?

 

[talontsi01]

Ramchargers told me 2-3 weeks. Now, a month later, they still say a few more weeks. I want this thing so bad. I have the gm maf sittin on my garage shelf. I wish it would come.

 

[Bd1000Eclipse]

ouch.. maybe i should just cancel my order tomorrow and get it from dejon tool.. u think they will let me cancel it? do they still charge your credit card even before they have shipped?

 

[UNFORGIVEN GSX]

They should be able to work with you on it. In the end they make the money.If it has been so long, you should have a charge on your statement whether or not they charged you. I got my GM MAF yesterday. Man, that thing is huge and it is only the 3in. I can't wait to put it in. I think I'll call Dejon tomorrow and see where my stuff is.


Rob

 

[Bd1000Eclipse]

did u order the translator from dejon? when did they say it would come? how long as it been?

 

[UNFORGIVEN GSX]

I did order from Dejon, but not by phone. LIke I said I have to call them tomorrow and see. I ordered it on Sunday night.


Rob

 

[UNFORGIVEN GSX]

I got in touch with dejon and they said that they expect to get more maf translators in by the middle of next week. That is crappy cause I want it now. Oh well, what can ya do?


Rob

 

[Bd1000Eclipse]

cant do anything.. ramchargers told me they are making them as fast as they can, but sometimes they run out of parts and the wait goes as high as 7 weeks! ouchhh...

 

[talontsi01]

7 weeks...I'm over 6 now.

 

[UNFORGIVEN GSX]

I got a 2g one for sale. PM me!!!!!!!!!!!!!!!!!!!!!!!



Rob

 

[LsrRStyle]

If I had a gm maf on the intake where the 1g one would usually be could I still vent my bov or no?

 

[UNFORGIVEN GSX]

Nope. You have to mount it after the BOV in what is called a blow through setup. Draw through setup meters air that is blown off resulting in a rich mixture. Dejon Tool makes a kit that makes a blow through design an effortless affair.

http://www.dejontool.com/DSM-1g-SMIC.htm


Rob

 

[TalonBlitz00]

no you have to run a blow through pipe because the bov is after the mas in the way you described. you need to run a blow through pipe after the bov to vent to the atmosphere. Also venting to the atmosphere has a more positive efferct other than the sound. The rush of air from the bov causes air turbulance, not too noticable but you can pick up a small amount of power when wenting to atmosphere.

 

[Scrymerr]

Originally posted by Bd1000Eclipse
exactly.. have you ever blown an intercooler pipe off before? how about on the interstate in the middle of no where.. acutally have you ever blown a coupling in half? i have.. thats one of those times i wished i had the gm maft.. you can still drive the car because the maft is reading the air right by the TB.. this is why i ordered it, to bad its a 2-3 week wait on it wherever you go..

Been there!