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  1. 11-21-2016 11:31 AM #1
    GWS42013
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    B8.5 Rpm limit vs B8

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    Hi guys,

    I've got a quick question out if plain curiosity... why is the B8.5' s rev limiter set lower than on the B8's? If I recall the B8.5 is about 400rpm lower... the same engine setup but wth an improved version of the DL501 Transmission... Why Audi,why.....

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  2. 11-21-2016 11:34 AM #2
    TexasDfwS4
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    It's all in the gearing, 8.5 has lower gears.
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  3. 11-21-2016 11:47 AM #3
    B8Addict
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    Its also because in stock tune the car doesn't make any more power after 5650RPM and begins to bleed boost. Doesn't make sense for it to rev all the way to 7000-7200 on stock tune.
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  4. 11-21-2016 11:53 AM #4
    SwankP3RF3ct10n
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    Those two answers you go so far are your correct reasons. But more importantly, why did they put a 160MPH speedo in the B8.5 when the B8 had 200MPH?
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  5. 11-21-2016 12:08 PM #5
    GWS42013
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    Quote Originally Posted by SwankP3RF3ct10n View Post
    Those two answers you go so far are your correct reasons. But more importantly, why did they put a 160MPH speedo in the B8.5 when the B8 had 200MPH?
    Perhaps Audi was a bit over zelous with the B8, and trying to bark up the wrong trees...M5,Merc SL65 etc... Trying to scare the big dogs with a Jack Russel Terrier...

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  6. 11-21-2016 12:08 PM #6
    whiped
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    Quote Originally Posted by SwankP3RF3ct10n View Post
    Those two answers you go so far are your correct reasons. But more importantly, why did they put a 160MPH speedo in the B8.5 when the B8 had 200MPH?
    I want to know this too... Although, the satisfactions of over-spinning the speedo kind of makes it worth it
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  7. 11-21-2016 12:34 PM #7
    MrFunk
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    Quote Originally Posted by SwankP3RF3ct10n View Post
    Those two answers you go so far are your correct reasons. But more importantly, why did they put a 160MPH speedo in the B8.5 when the B8 had 200MPH?
    Musta been a Typo
    The car is easily capable of exceeding 160
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  8. 11-21-2016 12:39 PM #8
    doug97gxe
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    Quote Originally Posted by SwankP3RF3ct10n View Post
    Those two answers you go so far are your correct reasons. But more importantly, why did they put a 160MPH speedo in the B8.5 when the B8 had 200MPH?
    more important question is why did my wife's B8 A5 have a 180 mph Speedo when my B8.5 S5 had a 160 mph speedo
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  9. 11-21-2016 12:59 PM #9
    jygesq
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    yes but car is limited to 155 MPH or 130 mph if all season tire. The 160 speedois all we need. 200 mph was bluster
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  10. 11-21-2016 01:01 PM #10
    whiped
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    Quote Originally Posted by jygesq View Post
    yes but car is limited to 155 MPH or 130 mph if all season tire. The 160 speedois all we need. 200 mph was bluster
    Psh.... Who still has the speed governor on?

    I've had my car over 180 mph
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  12. 11-21-2016 02:16 PM #11
    CELison
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    The increments on the B8.5 give the illusion of accelerating faster than the B8. 10mph vs 20mph. 160 vs 200 over the same sweep distance
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  13. 11-22-2016 06:53 AM #12
    Dippy
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    Quote Originally Posted by B8Addict View Post
    Its also because in stock tune the car doesn't make any more power after 5650RPM and begins to bleed boost. Doesn't make sense for it to rev all the way to 7000-7200 on stock tune.
    Are you sure? I have seen plenty of rolling road graphs where peak power for the stock B8s is typically higher than that for the B8.5s.
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