GM MAF and DSM translator

[A. Van]

I'm confused. Does the GM MAF go between the air filter and the turbo intake pipe or somewhere in the UICP??

 

[98eclipseRS]

You can have it set up either way. From what i have seen most people put in on the uicp after the bov so they can vent without any problems with running rich or crazy idle. As far as performance goes between having draw through or blow through i don't really know. hope this helps. I am sure someone on here will be able to help you with the performance aspects of the whole thing. later.
-zach-

 

[A. Van]

I thought you could run in beween the filter and intake pipe and vent open atmosphere.

 

[DSMJim]

Originally posted by A. Van
I thought you could run in beween the filter and intake pipe and vent open atmosphere.

How can you do that? It's still a MAS and still counts the amount of air entering the motor. If you vent air that has been counted your car will run rich regardless of what type of MAS you have.

The whole point of this setup is for flow, particurarly so that you can run the sensor in the UIP. For a lot of guys this allows them to run the car without a filter on it at the track, vent the BOV, not have to worry as much about boost leaks or poping off an intercooler pipe etc. The car still will run fine with all these conditions.

 

[Devicex]

Right, the MAF has to be after the BOV in order to vent properly. As far as I know, there is no real performance differance between the drawthrough/blowthrough setups. Alot of good info can be found on the DSM Translator yahoo group, check it out.

 

[98eclipseRS]

Does anyone have the site where it shows what maft's are compatible with our cars? I remember seeing a thread where the guy talked about buying a corvette maft and it not working for our cars. He gave a site that said which ones worked on our cars but i can't remember it.
-zach-

 

[A. Van]

I was told I could vent to the atmosphere by swap the stock 2g one out for the GM MAF with translator and I wouldn't need anything else. Is this the case?

 

[kpt4321]

YOU NEED THE MAF AFTER THE BOV.

 

[RayRay32]

does anyone in here know if there is a real performance gain if the maf is located between the throttle body and the BOV. It really doesnt seem like there would be that much of a performance gain. I mean how different is it? Just a little bit more noise between shifts.

 

[98eclipseRS]

Originally posted by RayRay32
does anyone in here know if there is a real performance gain if the maf is located between the throttle body and the BOV. It really doesnt seem like there would be that much of a performance gain. I mean how different is it? Just a little bit more noise between shifts.

If you just did that mod and that was the only one on your car no there would be no difference in performance, but most high end bov are not ment to be recurculated. With putting it after the bov you can vent to atmosphere without having to worry about running rich between shifts and having your car die everytime you come to a stop sign.

 

[RayRay32]

Im not going to vent cuz i think it sounds too ricey. But thanx for the fyi man.

 

[Devicex]

There is the added benifit of less restriction before the turbo when running a blowthrough setup, which translates into quicker spool.

 

[A. Van]

So you could run 2 GM MAFs. One after the BOV and one after the air filter? The GM MAFs I've found are all 3" or 3.5". Are there any places that sell 3" UICPing? to make it work?

 

[Devicex]

Why would you want to run 2 mafs? There are 2 setups as for placement of the MAF's... but 2 mafs? It's not necessary to have 3 inch uic piping, by using couplers/reducers most performance shops sell you can step up/down in order to place the maf. Dejontool does make a blowthrough pipe for the maf if you want to spend the money.

 

[98eclipseRS]

Originally posted by A. Van
So you could run 2 GM MAFs. One after the BOV and one after the air filter? The GM MAFs I've found are all 3" or 3.5". Are there any places that sell 3" UICPing? to make it work?

um you only need 1 man. Slow down and think about this it seems you are trying to take in to much info at once and getting confused(not trying to be a dick, I tried learning to much at once and it didn't work), anyway you only need one gm maf and one gm maf translator, You have the option of running it in the stock location or you can run it on the uicp after the bov. If you run it after the blow of valve you don't need to have any air metering device attached to the filter. Now as for your piping question dejon tool makes a blow through pipe that expands to 3" and has the same size couplers where the maf goes but the rest of the pipe is 2.5". YOu could also use a normal 2.5" pipe and get couplers that expand to 3" to make it fit. You also have one last option you could go to an exhaust shop or somewhere similar and have them bend y9ou up a custom pipe. There you have it thats all that is needed for this set up. I really recomend doing some extensive research on this before doing it to your car, that way you won't mess anytying up.

Please don't take anything in my post offesively, but from what it seems you like the idea of this but you odn't have the greatest idea of how the whole system works, and when that happens you usually break stuff which isn't good. Anyway i hope this helped clear up some of your questions. If you have any more just ask me and the other people of this board will help you with them.
-zach-

 

[EclipseValhalla]

Here's the link for the site that tell you which MAS will work
http://joshker99.home.comcast.net/files/25180303.htm

 

[98eclipseRS]

thanks, that will be very helpful because i will be switching to the gm mas/translator very shortly.
-zach-

 

[A. Van]

98eclipseRS: Thanks, Thats exactly what I was looking for. I just didn't know how to explain it.

 

[98eclipseRS]

no problem, Ya i was a little confused when i first read about this i was like wow i can just bolt on a gm mas and im good to go. That wasn't excatly the case now i kn0ow about it i am actually trying to get all the peices so that i can get this set up put on my car. I will let you all know how it goes.

 

[Kevin Jewer]

Putting the MAF after the BOV not only allowed me to vent (I have no choice with a SARD valve) but did wonders for spoolup. The GM MAF provides very little restriction, but any restriction you remove from before the compressor wheel is a sizeable gain. I got my boost thresshold down from 45-4600 to 43-4400, and after a shift I get full boost over 1000 rpm faster (big turbo). Very worthwhile. Also, 1gs tend to outrun the stock MAS before 2gs do, so at some point on either car you wont have any real choice but to upgrade. So there are several advantages to it, in either configuration. There is a 100 page thread that answers most of the frequently asked questions as well.

 

[98eclipseRS]

On a side note is anyone selling a gm maf and the 1g translator. I would like to get it a little cheaper than buying everything brand new, so if any of you could help in anyway that would be great. But from the looks of it i will have to go with buying it new.
-zach-