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Thread: DCT to 8800rpm?

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    DCT to 8800rpm?

    Has anyone heard of any software company being able to defeat the software restrictions on a DCT that prevent it revving over 8800rpm? I don't mean a brochure somewhere with someone claiming it. I mean has anyone actually seen it done?

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    No, have not seen it actually done.

    Is the DCT mechanically capable? Yes. Has anyone changed the software to allow it to exceed this point? No. Is anyone capable of it? I don't know.
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    Ok thanks, that's what I thought.

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    Click here to enlarge Originally Posted by M&M Click here to enlarge
    Ok thanks, that's what I thought.
    Only you have. But why the obsession with this?

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    Click here to enlarge Originally Posted by George Smooth Click here to enlarge
    Only you have. But why the obsession with this?
    What do you mean? It is a good question.
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    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    Why do you mean? It is a good question.
    His a tuna fish and has managed to move it to 9000rpm and it must have been hard or should I say tricky. Still not sure why he would want to do that unless he is peddling some fancy cams that no one is aware of.

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    Click here to enlarge Originally Posted by George Smooth Click here to enlarge
    His a tuna fish and has managed to move it to 9000rpm and it must have been hard or should I say tricky. Still not sure why he would want to do that unless he is peddling some fancy cams that no one is aware of.
    Heh, what do you mean, "his a tuna fish" ?

    Even if you manage to do that it will only work in manual mode unless someone has managed to get complete control of the DCT which I don't believe anyone has. It also would be useless when using launch control. Still, with built heads/valvetrain and some aggressive cams someone might want to rev that high.
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    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    Heh, what do you mean b, "his a tuna fish" ?

    Even if you manage to do that it will only work in manual mode unless someone has managed to get complete control of the DCT which I don't believe anyone has. It also would be useless when using launch control. Still, with built heads/valvetrain and some aggressive cams someone might want to rev that high.
    Software tuner. Quite a good one at it. One of the few that does not sell off the shelf stuff purely for money but sits on the drag sidelines and racers perfecting each tune to the car. His the dude that tuned the 11.9 quartered M5.
    The heads are good enough for 9000, the cams are needed to keep the power from dropping off but I would say quite mild ones vs stock as the power still climbs up till 8600.
    Common M&M own up and tell us a bit more about S65 cams and what is available. Click here to enlarge

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    Click here to enlarge Originally Posted by George Smooth Click here to enlarge
    Software tuner. Quite a good one at it.
    The heads are good enough for 9000, the cams are needed to keep the power from dropping off but I would say quite mild ones vs stock as the power still climbs up till 8600.
    Common M&M own up and tell us a bit more about S65 cams and what is available. Click here to enlarge
    Apparently I'm really missing something here, seems you know this guy George?

    Ok, so he has a really good software tuner who has raised his limit to 9000? Apparently he has some some custom cams as well? The heads will definitely flow up to 9000 rpm but the valvetrain would need to be addressed. If he has this all done why is he asking us instead of telling us about it? Someone share what is going on.
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    Can the bottomend handle that stress?
    Click here to enlargeClick here to enlarge

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    Click here to enlarge Originally Posted by GG///M3 Click here to enlarge
    Can the bottomend handle that stress?
    Yes, all forged, was tested at up to 10k RPM. I was surprised they did not have the motor rev to at least 8500 rpm.
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    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    Apparently I'm really missing something here, seems you know this guy George?

    Ok, so he has a really good software tuner who has raised his limit to 9000? Apparently he has some some custom cams as well? The heads will definitely flow up to 9000 rpm but the valvetrain would need to be addressed. If he has this all done why is he asking us instead of telling us about it? Someone share what is going on.
    We know each other very well, since 1997. I did not say that he has a cam solution but I suspect he is working on one, I do not think he would go to the effort to figure out raising the limiter to that extent or learning the full control of DCT which he obviously has if he did not have something up his sleeve which is most likely a cam in each hehe.

    Click here to enlarge Originally Posted by GG///M3 Click here to enlarge
    Can the bottomend handle that stress?
    I do not think the bottom end will mind reving up that high as the stroke is relatively short. BMW really over engineers there motors and it should be fine as long as people are not gearing down and having the rpm shooting up that high.

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    Click here to enlarge Originally Posted by George Smooth Click here to enlarge
    We know each other very well, since 1997. I did not say that he has a cam solution but I suspect he is working on one, I do not think he would go to the effort to figure out raising the limiter to that extent or learning the full control of DCT which he obviously has if he did not have something up his sleeve which is most likely a cam in each hehe.



    I do not think the bottom end will mind reving up that high as the stroke is relatively short. BMW really over engineers there motors and it should be fine as long as people are not gearing down and having the rpm shooting up that high.
    Yep, the short stroke really doesn't stress the bottom end nearly as much as in say the S54.

    Who is this tuner? Full control of the DCT in what sense? Can he change the launch control parameters?
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    Click here to enlarge Originally Posted by George Smooth Click here to enlarge
    We know each other very well, since 1997. I did not say that he has a cam solution but I suspect he is working on one, I do not think he would go to the effort to figure out raising the limiter to that extent or learning the full control of DCT which he obviously has if he did not have something up his sleeve which is most likely a cam in each hehe.



    I do not think the bottom end will mind reving up that high as the stroke is relatively short. BMW really over engineers there motors and it should be fine as long as people are not gearing down and having the rpm shooting up that high.
    I agree they do, but 10k sounds crazy
    Click here to enlargeClick here to enlarge

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    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    Yep, the short stroke really doesn't stress the bottom end nearly as much as in say the S54.

    Who is this tuner? Full control of the DCT in what sense? Can he change the launch control parameters?
    Tuner is Xcede Performance - South African based.

    Best to direct questions to him but he is a asset to have on the board.

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    Click here to enlarge Originally Posted by George Smooth Click here to enlarge
    Tuner is Xcede Performance - South African based.

    Best to direct questions to him but he is a asset to have on the board.
    This tuner is not on the board here, correct?

    I will wait for M&M to hopefully share more info on what exactly is going on here.
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    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    This tuner is not the board here, correct?

    I will wait for M&M to hopefully share more info on what exactly is going on here.
    M&M is Xcede.

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    Click here to enlarge Originally Posted by George Smooth Click here to enlarge
    M&M is Xcede.
    Why the hell didn't he just say so? Here is the vid to prove it:



    Why is he going around asking the question he already knows the answer to? Was he hoping to see if anyone mentioned xcede? I want to know more details about this.
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    He claims 9000 RPM without any ill affects and a dramatic increase in performance. I would like to see a dyno that goes up to 9000 rpm and how the hell is the valvetrain handling it? This motor really is over engineered, incredible.
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    Yeah I am a co-owner of Xcede Performance. We have managed to get a DCt to rev 9000rpm. In fact we can get it to rev pretty much anywhere we want. And I can assure you it's not easy. BMw have hard-coded the rev-limiter outside the flash area in the DCT DME. We had to be rather innovative to make it rev there. But the car does peak around 8500-8500. But the good part is that it does not drop off to 8800rpm. It's relatively flat. So there is a definite benefit to revving 8800, evein if it peaks a few hundred rpm before that.

    The reason I asked if it can be done is to establish if anyone else in the world had done it. I didn't think so as the route we chose is not conventional, but I was just checking.

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    Click here to enlarge Originally Posted by M&M Click here to enlarge
    Yeah I am a co-owner of Xcede Performance. We have managed to get a DCt to rev 9000rpm. In fact we can get it to rev pretty much anywhere we want. And I can assure you it's not easy. BMw have hard-coded the rev-limiter outside the flash area in the DCT DME. We had to be rather innovative to make it rev there. But the car does peak around 8500-8500. But the good part is that it does not drop off to 8800rpm. It's relatively flat. So there is a definite benefit to revving 8800, evein if it peaks a few hundred rpm before that.

    The reason I asked if it can be done is to establish if anyone else in the world had done it. I didn't think so as the route we chose is not conventional, but I was just checking.
    No one else has done it, you are the first, congratulations and well done! I'll be making this front page news shortly.

    My question is, what else can you do? Can you only use those shift points in manual mode? You can't reprogram the auto shift points or the launch control points?

    Do you feel comfortable having the stock motor rev that high?
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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
    My question is, what else can you do? Can you only use those shift points in manual mode? You can't reprogram the auto shift points or the launch control points?

    Do you feel comfortable having the stock motor rev that high?
    For the moment it is only in manual mode. Launch control & auto still shift at the programmed point. But we are working on this. I think it may well be possible to re-program that as well, but that may take a bit longer to lick.

    And yeah I am comfortable revving that high. George knows the other tuner (or tuna fish Click here to enlarge ), that has been revving a manual M3 to 9000rpm for the last 2 years. My personal car I also rev to 8800rpm on stock hardware. The valve springs & rest of the head seem to be pretty well over-engineered. Schrick say the valve springs are good for 9200rpm.

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    Click here to enlarge Originally Posted by M&M Click here to enlarge
    For the moment it is only in manual mode. Launch control & auto still shift at the programmed point. But we are working on this. I think it may well be possible to re-program that as well, but that may take a bit longer to lick.

    And yeah I am comfortable revving that high. George knows the other tuner (or tuna fish Click here to enlarge ), that has been revving a manual M3 to 9000rpm for the last 2 years. My personal car I also rev to 8800rpm on stock hardware. The valve springs & rest of the head seem to be pretty well over-engineered. Schrick say the valve springs are good for 9200rpm.
    I broke a valve spring so I don't have confidence in them but I don't believe it was due to the revs but due to hitting the limiter.

    Never realized they were rated for 9200 rpm, incredible. Some aggressive cams and headwork with a 9000 rpm redline could produce some absolutely amazing results. I know I will want my built motor to rev this high.

    No one has yet been able to re-program the auto and launch control parameters. If you guys can do that, you deserve far more credit than you get as that puts you ahead of every tuner on the planet in regards to control of the DCT.
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    WOW I have a 6MT but this was still a great read ... Great questions Sticky!!

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    Click here to enlarge Originally Posted by George Smooth Click here to enlarge
    Tuner is Xcede Performance - South African based.

    Best to direct questions to him but he is a asset to have on the board.
    I would concur with that, I've always enjoyed his performance results, input and knowledge, he's very objective as well, you're not too bad either George! Click here to enlarge
    08 E92 M3 - DCT
    Bolt Ons - Best ET 11.88 Best Trap Speed 119.8 MPH
    60-130 MPH (3 shifts) 10.71s
    Gintani Stage 2+ Supercharger 60-130MPH (3 shifts) 7.06s
    11.45 @ 131.6 MPH
    579WHP @9.3psi

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