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  1. #1
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    Akrapovic releases catless downpipes for the S63 V8 in the X5M and X6M

    S63 twin turbo V8 owners now have another downpipe options courtesy of Akrapovic. The piece itself is made out of stainless steel and is catless. No additional details were supplied. We would like to at the very least know the cost and claimed power gains. A dyno would definitely be warranted as well. Akrapovic makes quality exhaust pieces but without further details it makes for a very weak product unveiling. Akrapovic pieces tend to be expensive so do not expect this to be a value in S63 tuning.

    Click here to enlarge

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    They look cool, but lets see what they do on the dyno...

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    Probably won't be worth the gain at their price. I'll bet they are somewhere in the $1500 range.

    Also, found this:
    http://www.gtspirit.com/2012/01/16/o...bmw-x6-m-x5-m/

    According to that website, gains are 11 hp and 15Nm.

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    will it be possible to install them without dropping the motor?

  5. #5
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    Click here to enlarge Originally Posted by GetSomeE92 Click here to enlarge
    Probably won't be worth the gain at their price. I'll bet they are somewhere in the $1500 range.

    Also, found this:
    http://www.gtspirit.com/2012/01/16/o...bmw-x6-m-x5-m/

    According to that website, gains are 11 hp and 15Nm.
    Those gains seem to be referring to the rear section and not the downpipes.

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    Click here to enlarge Originally Posted by SpeedLimit? Click here to enlarge
    will it be possible to install them without dropping the motor?
    @ar design should be able to answer this as well as @Jimefam

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    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    Those gains seem to be referring to the rear section and not the downpipes.
    I couldn't tell from the article whether they were referring to the cat-back or the entire exhaust system when providing the gains.

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    1 out of 1 members liked this post. Yes Reputation No
    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    @ar design should be able to answer this as well as @Jimefam
    Don't know about the X5 or X6 but I can't imagine you'd need to drop the motor. On the 5 series it is very simple to get them in an out.

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    This will be great to reduce heat soak, a common problem in the N54, and i'd imagine in the TT S63 with all that weight

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    Some more info but nothing for just the downpipes by themselves:

    The Evolution system with optional downpipe (example with tuned engine):

    Stainless steel downpipe set
    Titanium link pipe set with resonators
    Titanium X-pipe
    Titanium muffler with integrated exhaust valves
    Hard facts:

    Plus 61 HP (at 4,700 rpm)
    Plus 114 Nm / 84 lbs-ft of torque (at 3,800 rpm)
    28 kg / 62 lbs. lighter than stock

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    1 out of 1 members liked this post. Yes Reputation No
    Has anyone installed these- is there any drone? How's the sound? I have Akrapovic cat back now on 2012 x6m and am considering getting the Downpipes but am worried about drone from the cat delete. Any input would be appreciated.

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    Click here to enlarge Originally Posted by larkinda Click here to enlarge
    Has anyone installed these- is there any drone? How's the sound? I have Akrapovic cat back now on 2012 x6m and am considering getting the Downpipes but am worried about drone from the cat delete. Any input would be appreciated.
    Don't know anyone here running these but you can be confident with Akrapovoic quality.

    Stage 2 or 2.5 E9X M3 S65 V8 supercharger kit for sale
    : http://www.boostaddict.com/showthrea...r-kit-for-sale

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    Anyone have any brand catless down pipes installed?

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    Click here to enlarge Originally Posted by larkinda Click here to enlarge
    Anyone have any brand catless down pipes installed?
    No, you might want to talk to @ar design though as they have probably the best option.

    Stage 2 or 2.5 E9X M3 S65 V8 supercharger kit for sale
    : http://www.boostaddict.com/showthrea...r-kit-for-sale

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    I'm looking at running the akrapovic DP but my dinan tune isnt comparable. The shop recommended renntech tune as they will add the cat delete to their tune. Claiming 650 Hp with renntech and exhaust. Anyone have experience with renntech? Im not crazy about having to ship ecu for flash.

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    Click here to enlarge Originally Posted by larkinda Click here to enlarge
    I'm looking at running the akrapovic DP but my dinan tune isnt comparable. The shop recommended renntech tune as they will add the cat delete to their tune. Claiming 650 Hp with renntech and exhaust. Anyone have experience with renntech? Im not crazy about having to ship ecu for flash.
    Nothing wrong with having to ship the ECU.

    Yes, Renntech will do a custom tune for you and for your DP's. You can be very confident with their work, stellar reputation.

    Stage 2 or 2.5 E9X M3 S65 V8 supercharger kit for sale
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