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Anyone got close-up pics of their drilled air box?

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Old 09-02-2006, 10:36 PM
  #16  
fstockcarrera
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cup air box mod= 4 RWHP I did the dyno work 2 years ago with Geoffery on Dyno Pac dyno.
bob
Old 09-03-2006, 04:08 AM
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SimonExtreme
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Bob

Could you please provide a few more details of the test. What was the spec of the car? Did it have any DME mods etc.

I have always suspected that to get the maximum benefit from breathing mods you need to do both sides of the equation and that it is one of those occasions that 2+2 equals more than 4.
Old 09-03-2006, 12:03 PM
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fstockcarrera
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Simon, M64-01 engine, euro rs DME, stock headers, Fabspeed euro pre muffler, secondary and primary bypasses.
no other mods. Bob
Old 09-03-2006, 03:44 PM
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kusee pee
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I have a drilled airbox but, inspired by this thread, I have now cut the whole thing out. I'm pleased to confirm that the car sounds great. In fact, identically great to how it did before. Thought it would be useful to share this!
Old 09-05-2006, 06:11 PM
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wesmc3
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Originally Posted by SimonExtreme
Bob

Could you please provide a few more details of the test. What was the spec of the car? Did it have any DME mods etc.

I have always suspected that to get the maximum benefit from breathing mods you need to do both sides of the equation and that it is one of those occasions that 2+2 equals more than 4.
That was the case when I did the identicle thing on a Supra, Dyno'd it after each step.

Intake gave me 6hp, cat back gave me 8hp, both gave me 17.
Old 09-05-2006, 10:52 PM
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jackb911
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Here's the one I did for my 993. Doubtful if there is a detectable power increase, but it sure sounds nice at WOT.
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Old 09-06-2006, 03:31 AM
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SimonExtreme
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Originally Posted by fstockcarrera
Simon, M64-01 engine, euro rs DME, stock headers, Fabspeed euro pre muffler, secondary and primary bypasses.
no other mods. Bob
I wonder if you would have seen the same increase if you hadn't done stuff to the exhaust side of the equation......
Old 09-06-2006, 05:14 AM
  #23  
etom
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Originally Posted by jackb911
Here's the one I did for my 993. Doubtful if there is a detectable power increase, but it sure sounds nice at WOT.
Yes, but how do you get a nice rumble at idle?
Old 09-06-2006, 09:43 AM
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marcandkimmie
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To get a nice rumble at idle, bypass the secondary muffler.
Old 09-06-2006, 09:50 AM
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Superunknown
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Has anyone got the cat bypass, cup pipe AND g pipe? Would it be too loud and what would the potential hp gains be?



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