997 Turbo / GT2 2006–2012 Turbo discussion on the 997 model Porsche 911 Twin Turbo.
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997.1TT mafless?

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Old Jul 30, 2012 | 12:17 PM
  #16  
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of course things will improve. you air flow will increase like %30.
 
Old Jul 30, 2012 | 01:05 PM
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Originally Posted by MannschaftQ8
It is all depends on HP goal?
The problem is will you be able to get racegas or you wanna keep using pumpgas?
Keepin' pumpgas, no race fuel easily available here.
 
Old Jul 30, 2012 | 01:06 PM
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Originally Posted by besiktas
of course things will improve. you air flow will increase like %30.
Hi man,
What do you mean? 30% more airflow mafless?
 
Old Jul 30, 2012 | 02:32 PM
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it means your car will be able to suck more air with maf physically gone
 
Old Aug 6, 2012 | 02:14 PM
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Originally Posted by besiktas
it means your car will be able to suck more air with maf physically gone
Ok, I bolt one off today to see how big it is, yes it is an intake air brake, I wouldn't say 30% of the area but about 15, but ok I'm now looking for old sensors to cut them and bolt them instead of mines.

Info: I did a few new tests today plugged and unplugged, the boost build exactly same, but 200rpm later than by low AT.
So I would say unplugged the top end is a very little bit better but low end is same.
Best today's times by 23°C AT: 100-200 in 6.1 with 1 shift and 6.3 with no shift, notice by low AT 100-200 is better with no shift because of the earlier boost building...

Cheers,
P.
 
Old Aug 9, 2012 | 04:57 PM
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Originally Posted by K24F
Ok, I bolt one off today to see how big it is, yes it is an intake air brake, I wouldn't say 30% of the area but about 15, but ok I'm now looking for old sensors to cut them and bolt them instead of mines.

Info: I did a few new tests today plugged and unplugged, the boost build exactly same, but 200rpm later than by low AT.
So I would say unplugged the top end is a very little bit better but low end is same.
Best today's times by 23°C AT: 100-200 in 6.1 with 1 shift and 6.3 with no shift, notice by low AT 100-200 is better with no shift because of the earlier boost building...

Cheers,
P.
You ran best low 5 sec 100-200 before.
Why you running in 6's now?
 
Old Aug 10, 2012 | 02:05 AM
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Originally Posted by uaeturbo
You ran best low 5 sec 100-200 before.
Why you running in 6's now?
Good memory Man! Yes my absolute best is 5.25' but 2 differences:

-AT was about 05°C so early boost building and no shift.
-the tune was the "race" tune Todd sent me but which needs racegas, I didn't use it, it was just a test...

So no comparison with "real life" times for me, my best 100-200 with my usual tune is 5.64" with no shift by 04°C AT but average is high 5' and low 6' by 20°C AT.

The 100-300 with the race tune was the same than with the usual tune because no racegas and big time pulling, about 21'.
 
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