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.

Exhaust flow

Old Mar 4, 2008 | 05:05 PM
  #11  
cincyTT's Avatar
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Default RE: Exhaust flow

All im saying is you are most likely going to waste both time and money and not see anything significant.
 
Old Mar 4, 2008 | 05:37 PM
  #12  
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Default RE: Exhaust flow

ok, just remove the exhaust from cat back,and remove the air flilter, save weight and gain hp, just watch for carbon dioxide!!!!!!!!!!!!!!!1
 
Old Mar 4, 2008 | 10:25 PM
  #13  
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Default RE: Exhaust flow

if you want to DYI,

get 10Ft. of piping, a 2 Hi-Flow glasspack resonators and a Ceramic Hi-Flow Cat, 2 or 1 stainless tip(s)

hit up a pipe bender andand your good to go.

Without a muffler its still Quiet as hell and wont be restrictive plus you pass emissions

and if you want some extra db go with 1 glasspack.

total cost
Stainless: 160$
Aluminized: 110$


 
Old Mar 4, 2008 | 10:30 PM
  #14  
cincyTT's Avatar
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Default RE: Exhaust flow

glass pack? we in the 70's again with cherry bombs? [:'(]
 
Old Mar 4, 2008 | 10:42 PM
  #15  
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Default RE: Exhaust flow

lol they still making cars with drums and solid axles

i love glasspacks, they really quiet down the exhaust ALOT. enough not to run a muffler :P

its funny they still selling cherry bombs too LOL
 
Old Mar 4, 2008 | 10:44 PM
  #16  
cincyTT's Avatar
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Default RE: Exhaust flow

So YOU'RE the reason cherry bomb is back in business [:@]

I still cant believe you cant get some dam rear disc brakes on some cars, thats just gay.
 
Old Mar 4, 2008 | 10:53 PM
  #17  
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Default RE: Exhaust flow

hahahaha :P

i hate drums. biggest pain in the @ss to change, it really sucks that they want to cheap out on crappy suspension and crappy braking all just to make a bigger profit and still overprice the car by 15k$
 
Old Mar 4, 2008 | 10:57 PM
  #18  
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Default RE: Exhaust flow

Actually, I'm doing a cat-back straight pipe this spring, with a cherry bomb, just to see how it sounds. I think it should be decent, and obviously cheap.

Going back to flow, and heat, and whatnot, I do have to vote against the exhaust cooling.Its the opposite of your intake, on that side, you want cool air, because its dense, on the exhaust side, you want hot air, because its NOT dense. Getting into the restrictions/backpressure issue, if you ARE running a full exhaust, aka, not dumping to atmosphere, reducing diameter as it moves to the rear is actually smart, because over that 8' of pipe, your exhaust does cool and condense, and a smaller diameter keeps velocity up so you don't end up with a wall of restriction 3/4 of the way back. Turbo or not, techbod is right.

BTW, think you can read flow fairly easily thru vag-com. Might want to look into that.
 
Old Mar 4, 2008 | 11:06 PM
  #19  
cincyTT's Avatar
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Default RE: Exhaust flow

ORIGINAL: achTTung

reducing diameter as it moves to the rear is actually smart, because over that 8' of pipe, your exhaust does cool and condense, and a smaller diameter keeps velocity up so you don't end up with a wall of restriction 3/4 of the way back. Turbo or not, techbod is right.
If that was the case, more people would run 3" dp and 2.5" cat backs. Since people make more power with 3" full turbobacks, ill keep with what makes more power.
 
Old Mar 4, 2008 | 11:11 PM
  #20  
DurTTy's Avatar
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Default RE: Exhaust flow

i second the 3" piping . you want the least amount of backpressure on the turbo. especially in high rpms, the one way to do that is increase volumetric flow of the pipe.

just get the materials and a shop will charge way less in total. (if you dont want to or cant operate a pipe bender)

ill snap some pics of all the stainless steel parts i got to build my exhaust all 3"
 

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