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Old 06-27-2009, 06:27 PM   #1
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MAFS question on relocating

Does relocating/moving the MAFS closer too or away from the TB make a affect the performance of the ECU?

If I recall this is an issue by moving these things. Previous owner of the kit used a MAFia which I think makes this a necassary for moving the MAFS. I also have seen other kits using the MAFS in before the compressor housing and this one is about 3" from the TB. I dont know too much how these things work but more curious and cautious before destroying something,lol. Just trying to get some info on this please.Thanks


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Old 06-27-2009, 08:02 PM   #2
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Just because you have a MAFia does not mean you have to move your MAF

If the MAF is just before the TB then you have blowthrough and thats the best way to go , either way your have a lot of tuning to do , 3 inches before the TB may cause some issues but try it and see first

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Old 06-27-2009, 10:34 PM   #3
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Quote:
Originally Posted by 1turbofocus View Post
Just because you have a MAFia does not mean you have to move your MAF

If the MAF is just before the TB then you have blowthrough and thats the best way to go , either way your have a lot of tuning to do , 3 inches before the TB may cause some issues but try it and see first

Tom
I never claimed to "have to" move it...it was merely a questions. As for the kit the guy claims to be yours Tom...which it looks like your work. I have seen others and they had the MAF in front of the turbo compressor housing. Here is a picture:



So I was a lil bit off on the 3" claim but is this an adequate distance from the TB? I am going to get a tuner and tune from you hopefully when I get the car back soon.
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Old 06-28-2009, 06:33 AM   #4
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Looks like it could be , if so that is one of the very first kits I built , it would be about 8-9 years old

MAF will be hard to say till you try it , close turns at both ends , it isnt as much the TB being close as the bends in the piping

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Old 06-28-2009, 12:40 PM   #5
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Here is another question...I currently run a Pro-M 70mm MAF thats at the stock tune. Provided was a much larger empty MAF housing which probably used the stock MAF and the MAFia to calibrate.

Question is would I be better with the 70mm or using the housing with the stock MAF? I know either way it will need tuning/calibrating the unit.
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Old 06-28-2009, 07:35 PM   #6
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If you do the pro-m and it goes bad then there is no place to get another one and you start all over with the tuning , If you do the 3 inch tube and stock maf and anything happens you just get another one

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Old 06-28-2009, 08:38 PM   #7
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Sorry to be off topic here but is it better to run the BOV before the MAFS so you don't expel metered air that is supposed to be going in the engine?
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Old 06-28-2009, 09:01 PM   #8
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Damn man, I think people would actually be annoyed that you took it off topic like that. You basically answered your own question as it is. You do not want to vent to atmosphere after the MAF because you will run stupid rich between shifts. If you recirculate the BOV, you can run it after the MAF, but you should run blow-through instead of draw-through.
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Old 06-29-2009, 07:56 AM   #9
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My apologies. I just saw the picture with the MAFS before the BOV and wanted to verify.
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