996 Turbo / GT2 Turbo discussion on previous model 2000-2005 Porsche 911 Twin Turbo and 911 GT2.

lets talk open/closed loop

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  #31  
Old 07-10-2008 | 08:56 PM
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Originally Posted by 1999Porsche911
A resister works flawlessly if your tuning is done properly. For those who only tune to the high engine loads, you may have a problem when substantially increasing the airflow. In these cases, either tune to the closed loop loads, or install a variable MAF resister.

You can spend the time and money redirecting airflow, but it is not necessary.
A saw a few edits with a few slightly different responses and now missing content....is it ok to respond to this quoted reply?
 

Last edited by Tony@epl; 07-10-2008 at 09:21 PM.
  #32  
Old 07-10-2008 | 08:58 PM
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Originally Posted by Al Norton
I assume the 4.0 to 4.5" maf's you mention are internal tube diameters but I may be completely incorrect as I haven't understood a lot of what has been discussed on this thread----interesting, though.

My internal diameter is 95mm, about 3 3/4" and I have never dynoed my car. Judging from the numbers provided by others for their 60-130 numbers compared to mine, I feel confident my car is producing well in excess of 700HP at the crank. I'm not sure how my tuner did it, I just know my components and my results.

Does your 95mm maf have a flow straightener? Yes, I am speaking of ID on the sizes.
 
  #33  
Old 07-10-2008 | 09:14 PM
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What's the diameter of the stock MAF tube. Will basic cross section area calculations determine increased OEM MAF AF readability?

ie. If the cross section area is 150% of OEM cross section, the HP limit will be 150% of OEM tube and MAF??
 
  #34  
Old 07-11-2008 | 06:18 PM
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Tony,

I don't know if my 95mm tube has a flow straightener. Since I don't even know what that is, I might not know what I was looking at if I saw it. All I remember is that there was an aluminum tube machined and adapted in place of the plastic one.
 
  #35  
Old 07-11-2008 | 07:00 PM
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I think he's talking about the waffle.
 
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