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custom exhaust bore

Discussion in 'A3/S3 Forum (8L Chassis)' started by sonic93, Jun 14, 2011.

  1. sonic93
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    sonic93 New Member

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    if i was to get a custom exhaust built what size bore would i have 3 inch allway or 2.5 from decat pipe back? im only planning of map, full decat and a badger 5 and 007 so would i realistically be looking at 280 ish ? cheers rob
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  2. Dani_B19
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    Dani_B19 Audi-sports own special child.

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    Guessing a s3? If you going for a custom exhaust you may aswell go for 3", unless you want it tobe boomy though, you should get a miltek style backbox to help keep the noise down when cruising etc.
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  3. s3dave
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    s3dave TFSI Hybrid

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    3" all the way..future proof then
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  4. a3Nate
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    a3Nate Member

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    do you guys run single silencer eg no centre box just a rear can??
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  5. sonic93
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    sonic93 New Member

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    yea s3 mate ok sweet so 3 inch won t be to big or nothing will it ? i mean on a power point of view cheers rob
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  6. s3dave
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    s3dave TFSI Hybrid

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    No less restrictions the better on a turbo car..
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  7. DaveA3
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    DaveA3 Audi A-Trizzle!

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    3" might sound a bit boomy but wont do any harm. Might be OTT unless ur running big power. Im sure someone on here is running standard exhaust with 300+ bhp
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  8. sonic93
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    sonic93 New Member

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    thats why im thinking to go down to a 2.5 after cat ?
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  9. DJ_Troopa
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    DJ_Troopa K1 Driver

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    I've got 3" and then 2.5" after the 200 cell sports cat.
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  10. sonic93
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    sonic93 New Member

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    whats the size of miltec ? thats kind of set up im thinking apart from full decat hmmm lol . im worried if i go 3 inch it will lose bit of power as it ain t no 400 bhp beast lol
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  11. s3dave
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    s3dave TFSI Hybrid

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    Turbod cars dont need back pressure, you will be fine
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