Audi TT The Audi TT line, in both the coupe and roadster combines Audi's All Wheel Drive performance with the feel of a European sports car.

3 simple questions?

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Old Jul 26, 2007 | 06:58 PM
  #1  
andrei's Avatar
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Default 3 simple questions?

1.what should the vacuum level be for a 225? I have a boost gauge that shows 20-21 in the vacuum side...is that ok?...

2.and a stupid question, why do we get vacuum,I knowI can search and find out, just like anything in this world, I'm lazy though... hope you guyscanshare some knowledge...

3.if the FPR doesn't have anything connected( no hose) is that bad?... when i installed my gauge the hose disconnected from too much pressure, on the freeway (gauge showing 0)...

hope one of you has the patience to read and answer my stupid questions... thank
 
Old Jul 26, 2007 | 07:12 PM
  #2  
moeron7's Avatar
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Default RE: 3 simple questions?

ORIGINAL: andrei

1.what should the vacuum level be for a 225? I have a boost gauge that shows 20-21 in the vacuum side...is that ok?... My hg is around 15-17. up to 20 if my AC is on

2.and a stupid question, why do we get vacuum,I knowI can search and find out, just like anything in this world, I'm lazy though... hope you guyscanshare some knowledge...No clue

3.if the FPR doesn't have anything connected( no hose) is that bad?... when i installed my gauge the hose disconnected from too much pressure, on the freeway (gauge showing 0)...You should have the guage hose connected to it. Thats why you are reading 0. You should find the hose and put it back on and tighten with something.

hope one of you has the patience to read and answer my stupid questions... thank
 
Old Jul 26, 2007 | 07:18 PM
  #3  
cincyTT's Avatar
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Default RE: 3 simple questions?

The FPR should have a direct vacuum source from the manifold. If you dont have that attached, bad things may/will happen. Dont drive it until you get that reattached.
 
Old Jul 27, 2007 | 08:46 AM
  #4  
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Default RE: 3 simple questions?

ORIGINAL: moeron7

ORIGINAL: andrei

1.what should the vacuum level be for a 225? I have a boost gauge that shows 20-21 in the vacuum side...is that ok?... My hg is around 15-17. up to 20 if my AC is on

2.and a stupid question, why do we get vacuum,I knowI can search and find out, just like anything in this world, I'm lazy though... hope you guyscanshare some knowledge...No clue

3.if the FPR doesn't have anything connected( no hose) is that bad?... when i installed my gauge the hose disconnected from too much pressure, on the freeway (gauge showing 0)...You should have the guage hose connected to it. Thats why you are reading 0. You should find the hose and put it back on and tighten with something.

hope one of you has the patience to read and answer my stupid questions... thank
Hey moeron - hows the credit card bill coming along that you bought all those mods with?
 
Old Jul 27, 2007 | 09:13 AM
  #5  
achTTung's Avatar
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Joined: Sep 2005
Posts: 6,678
From: Colchester, VT
Default RE: 3 simple questions?

Your engine is an air pump, draws air in, burns it, pushes it out, but between the engine itself and the air box, theres a thing called a throttle body. In it isa plate that closes off the intake so the engine can't get air. Put a restriction on the path to an air pump, and you create vacuum. Thats why you pull vac when you're not on the throttle, and why it dissappears when you rev the car (throttle plate is open)
 
Old Jul 27, 2007 | 10:31 AM
  #6  
moeron7's Avatar
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Default RE: 3 simple questions?

ORIGINAL: diehlryan


Hey moeron - hows the credit card bill coming along that you bought all those mods with?
You dont wanna know. And something else that sucks is I need a new clutch. So you know what that means....
 
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