• World first - Weistec cracks the SLS Black Series TCU (transmission control unit) and has control of the M159 SLS dual clutch gearbox

      This is serious business right here and continues to show that the grasp Weistec has on the M156/M159 platforms is unrivaled. The SLS Black Series just like the standard Mercedes-Benz SLS AMG features a dual clutch gearbox. However, the redline on the two cars is different as the SLS M159 V8 revs to 7200 rpm and the M159 V8 for the SLS Black Series was redesigned to rev to a higher 8000 rpm redline for more top end horsepower and tighter gearing.


      The dual clutch transmission software of course was also changed in the SLS Black Series to accommodate the higher redline. Not to mention the more aggressive shifting profile for the Black Series. Weistec is able to flash a stock SLS with the Black Series TCU software. This answers a question BenzBoost raised a while ago when the SLS Black Series came out regarding if one could retrofit Black Series parts and software to the standard SLS. It certainly is appearing increasingly more likely that SLS owners will be able to update their cars with the newer AMG parts and software.

      Expect a release with the product information and cost in the coming weeks. Weistec is testing the M159 V8 in the standard SLS to see how it reacts to the increased RPM as far as longevity and durability is concerned before officially releasing this software. The custom Weistec coded TCU software requires an ECU flash to function correctly as well.

      M159 TCU:

      This article was originally published in forum thread: World first - Weistec cracks the SLS Black Series TCU (transmission control unit) and has control of the M159 SLS dual clutch gearbox started by Sticky View original post
      Comments 87 Comments
      1. Jacob502's Avatar
        Jacob502 -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge

        a blown SLS is way more powerful. There is no way an NA SLS can win, ever. It can be modified of course with say this upcoming Weistec TCU and revved out to make more power but you can't increase boost. .
        Joe,

        If I recall correctly, you attended a roll on event against a supercharged SLS. You won that event for the overall AMG and BMW cars with trap speeds of 172-173 MPH, correct?

        What was the Supercharged SLS trapping?? ...I assume it was in the 160mph range

        Again, this was a roll on event

        Here is what @SLS AMG was trapping~160mph in a STANDING half mile
        http://benzboost.com/showthread.php?...-Record-160mph

        you see?
      1. Jacob502's Avatar
        Jacob502 -
        Just to be clear, As some loser scumbag will try to derail this thread and muddy the water. My brother and I are no way taking anything away from Weistec. We have a ton of respect towards Steve and all the Weistec team. They provide the best power to the wheels and best tuning soloutions for the M159/M156, hands down. The cracking of the SLS's TCU is proof. Whatever obstacle they might run into, I have seen them work it out. Therefore, whatever issues they had with the SLS, I'm pretty confident they will resolve it. They have the fastest Mercedes in the world. At this point, nothing is impossible with them. As they have accomplished what other couldnt do. This is why I continoue to invest in thier upgrades and I direct my friends towards them. They never let anybody down, Period! I also dont think they will listen to a clown who only invested in a pathetic ECU tuneClick here to enlarge

        My Bro will surley get this TCU software along with their ECU remmaping. I will contact Steve for sure fro my bro
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Jacob502 Click here to enlarge
        Joe,

        If I recall correctly, you attended a roll on event against a supercharged SLS. You won that event for the overall AMG and BMW cars with trap speeds of 172-173 MPH, correct?

        What was the Supercharged SLS trapping?? ...I assume it was in the 160mph range

        Again, this was a roll on event

        Here is what @SLS AMG was trapping~160mph in a STANDING half mile
        http://benzboost.com/showthread.php?...-Record-160mph

        you see?
        My car is a separate issue. The point I'm making is that a motor with forced induction will make more power of course. Yes, the SLS tuning is evolving for the platform and obviously the first example, just like on the C63, are not necessarily as powerful as later examples.
      1. Jacob502's Avatar
        Jacob502 -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        My car is a separate issue. .
        I understand. The point I was trying to make was that since your car won the Roll-On event by trapping in the 172- 173 mph, The supercharged SLS must have trapped less.

        My brother's SLS trapped 160mph in a standing half mile. Had it been a roll-on event it would have trapped higher.

        Just a technical indication that both trap speeds for both cars in 800 meters are similar when they should not beClick here to enlarge
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Jacob502 Click here to enlarge
        This quote is hidden because you are ignoring this member. Show Quote
        I understand. The point I was trying to make was that since your car won the Roll-On event by trapping in the 172- 173 mph, The supercharged SLS must have trapped less.

        My brother's SLS trapped 160mph in a standing half mile. Had it been a roll-on event it would have trapped higher.

        Just a technical indication that both trap speeds for both cars in 800 meters are similar when they should not beClick here to enlarge
        I don't know if we can really compare it that way. Honestly, the power and torque numbers are just much higher for a supercharged car. There really is no comparison. Like I said, the kits have evolved with the addition of the 3.0 liter option as has tuning. This TCU being cracked is just another example of platform evolution.
      1. Weistec's Avatar
        Weistec -
        There are a few issues here that need to noted. First, until we produced a long tube header (2-3 months ago) every other header on the market is a complete design failure. This is why @SLS AMG had to modify his headers. This is also why we specifically state that our SLS750 supercharger package can only be ran with a factory exhaust system.

        Every header on the market pushed the O2 sensor so far back in the system that the sensor can't even keep itself up to temp to get a proper reading of the exhaust gas mixture. This causes a few issues. First, the car will have sporadic readings. You will see O2 sensor trims fluctuate plus or minus 20% when they should only fluctuate maybe 5%. Second, (and most dangerous) the ECU will start to adapt using its best logic and it will typically adapt to run leaner which can cause serious issues. Even on an NA car, it will do this but on a supercharged SLS, the margin of error is much less. Third, the car will have idle issues which will eventually cause issues with the DCT. The idle issue comes from the car running from rich to lean constantly.

        Now we ask, how does everyone modify the SLS headers, and how are they produced. The only way to modify these headers is to stick the O2 sensor on one single primary. This is a huge band-aid solution which only gives you a mixture reading out of one single cylinder. We can post pictures of what we have seen and those of you who have knowledge of this will honestly laugh.

        Some tri-y headers have the O2 sensor placed on two cylinders. Again better than one, but still not good enough.

        The SLS that @Jacob502 and @SLS AMG are referring to was one of these. This particular car made 670HP on a dynojet and makes great power on the dyno. As soon as it driven for some time the car adapts, and starts to run lean. From here we specifically put a tune in the car that doesn't allow it to make power when running lean so the customer won't damage the engine.

        We have installed superchargers on many SLS and SLS Black Series, and those who have our headers installed are absolute power-houses with absolutely no issues. 600HP at the wheels on an NA SLS Black Series, and a very conservative 700HP at the wheels with our Supercharger on the SLS Black Series. We will be releasing more details on our headers shortly. Thanks guys!

        Weistec Engineering
      1. LZH's Avatar
        LZH -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        This quote is hidden because you are ignoring this member. Show Quote
        I realize this Luke but these threads tend to turn into you versus them when going down this route and considering this is a thread tied to a vendor it will be kept very tightly on topic by me and will not move off track with petty fighting. Anything superfluous will be negged into oblivion and/or deleted. Period.
        Really ? So I call BS on someone, without insulting them or personally attacking them. And that person replies calling me a "loser, scumbag and clown". I'd say that would fall under the "superfluous" category you mentioned. Time to put up, or shut up, Joe.
      1. JRCART's Avatar
        JRCART -
        Click here to enlarge Originally Posted by SLS AMG Click here to enlarge
        This quote is hidden because you are ignoring this member. Show Quote
        Hey LZH, you tend to talk to Weistec a lot don't you?

        Please talk to Steve @Weistec about my race with the supercharged SLS and he will confirm.


        Steve himself said that the SLS's are not working well with thier SC systems and they Were working on it.

        In fact why don't you ask Jim why his C63 BS wad quicker on stock internals than his SLS BS....
        The only reason the C BS might be quicker is the MCT clutch packs can handle slightly more torque and HP than the DCT in the SLS. I have both the C and SLS tuned to the maximum amount each clutch can hold and that is currently 790whp for the C and 725whp for the SLS. Wesitec is working on clutch pack solutions for both applications, in fact the beefier MCT clutch packs are being installed in my C BS as I type this and beefier DCT clutch packs are already installed and being tested on another customers SLS. All that being said even with a 75whp deficit I believe my SLS is as fast or faster than my C. The SLS is much lighter and has a much faster shifting transmission, those two things should be enough to overcome the hp deficit. We will know soon enough. As soon as the new clutch packs get installed and the C is back home in Chicago I will be sure to line the two cars up side by side for some real world results.
      1. JRCART's Avatar
        JRCART -
        Click here to enlarge Originally Posted by Weistec Click here to enlarge
        This quote is hidden because you are ignoring this member. Show Quote
        There are a few issues here that need to noted. First, until we produced a long tube header (2-3 months ago) every other header on the market is a complete design failure. This is why @SLS AMG had to modify his headers. This is also why we specifically state that our SLS750 supercharger package can only be ran with a factory exhaust system.

        Every header on the market pushed the O2 sensor so far back in the system that the sensor can't even keep itself up to temp to get a proper reading of the exhaust gas mixture. This causes a few issues. First, the car will have sporadic readings. You will see O2 sensor trims fluctuate plus or minus 20% when they should only fluctuate maybe 5%. Second, (and most dangerous) the ECU will start to adapt using its best logic and it will typically adapt to run leaner which can cause serious issues. Even on an NA car, it will do this but on a supercharged SLS, the margin of error is much less. Third, the car will have idle issues which will eventually cause issues with the DCT. The idle issue comes from the car running from rich to lean constantly.

        Now we ask, how does everyone modify the SLS headers, and how are they produced. The only way to modify these headers is to stick the O2 sensor on one single primary. This is a huge band-aid solution which only gives you a mixture reading out of one single cylinder. We can post pictures of what we have seen and those of you who have knowledge of this will honestly laugh.

        Some tri-y headers have the O2 sensor placed on two cylinders. Again better than one, but still not good enough.

        The SLS that @Jacob502 and @SLS AMG are referring to was one of these. This particular car made 670HP on a dynojet and makes great power on the dyno. As soon as it driven for some time the car adapts, and starts to run lean. From here we specifically put a tune in the car that doesn't allow it to make power when running lean so the customer won't damage the engine.

        We have installed superchargers on many SLS and SLS Black Series, and those who have our headers installed are absolute power-houses with absolutely no issues. 600HP at the wheels on an NA SLS Black Series, and a very conservative 700HP at the wheels with our Supercharger on the SLS Black Series. We will be releasing more details on our headers shortly. Thanks guys!

        Weistec Engineering
        I can attest to the Weistec headers working flawlessly with their SC set-up. I have put several thousand trouble free miles on my SLS BS since Weistec installed their 3.0L SLS system and Weistec LT headers. Since they have installed everything my car has driven 800 miles from Chicago to Dallas, 1700 miles from Dallas to Orange County and spent an entire 3 day weekend putting it through it's paces and running it hard at an event at Laguna Seca without so much as even a CEL.
      1. Jacob502's Avatar
        Jacob502 -
        Click here to enlarge Originally Posted by Weistec Click here to enlarge
        This quote is hidden because you are ignoring this member. Show Quote



        We have installed superchargers on many SLS and SLS Black Series, and those who have our headers installed are absolute power-houses with absolutely no issues. 600HP at the wheels on an NA SLS Black Series, and a very conservative 700HP at the wheels with our Supercharger on the SLS Black Series. We will be releasing more details on our headers shortly. Thanks guys!

        Weistec Engineering
        very nice to hear this. We want our SLS to get this package. I can't wait to see some more info on those headers.
        I will Email you
      1. Jacob502's Avatar
        Jacob502 -
        Click here to enlarge Originally Posted by JRCART Click here to enlarge
        This quote is hidden because you are ignoring this member. Show Quote
        I can attest to the Weistec headers working flawlessly with their SC set-up. I have put several thousand trouble free miles on my SLS BS since Weistec installed their 3.0L SLS system and Weistec LT headers. Since they have installed everything my car has driven 800 miles from Chicago to Dallas, 1700 miles from Dallas to Orange County and spent an entire 3 day weekend putting it through it's paces and running it hard at an event at Laguna Seca without so much as even a CEL.
        That's just perfect. I saw your car kick ass at the optima challenge. Very nicely done
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Weistec Click here to enlarge
        This quote is hidden because you are ignoring this member. Show Quote
        We will be releasing more details on our headers shortly. Thanks guys!
        This is what I'm looking forward to but won't everyone just rip off your solution?
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by JRCART Click here to enlarge
        This quote is hidden because you are ignoring this member. Show Quote
        The only reason the C BS might be quicker is the MCT clutch packs can handle slightly more torque and HP than the DCT in the SLS. I have both the C and SLS tuned to the maximum amount each clutch can hold and that is currently 790whp for the C and 725whp for the SLS. Wesitec is working on clutch pack solutions for both applications, in fact the beefier MCT clutch packs are being installed in my C BS as I type this and beefier DCT clutch packs are already installed and being tested on another customers SLS. All that being said even with a 75whp deficit I believe my SLS is as fast or faster than my C. The SLS is much lighter and has a much faster shifting transmission, those two things should be enough to overcome the hp deficit. We will know soon enough. As soon as the new clutch packs get installed and the C is back home in Chicago I will be sure to line the two cars up side by side for some real world results.
        The SLS will make more efficient use of its power. It's lighter, it revs higher so it has tighter gearing, and it shifts faster. Even if the HP / torque were equal all those other factors mean the SLS is simply faster.
      1. Weistec's Avatar
        Weistec -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        This quote is hidden because you are ignoring this member. Show Quote
        This is what I'm looking forward to but won't everyone just rip off your solution?
        What choice do we have at this point? It happened before and we know it will happen again. We just want to produce the proper parts for the car, and we think an SLS making the power, driving cross country twice, and laying down some of the fastest lap times at Laguna Seca is a strong indicator.

        Weistec Engineering
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Weistec Click here to enlarge
        This quote is hidden because you are ignoring this member. Show Quote
        What choice do we have at this point? It happened before and we know it will happen again. We just want to produce the proper parts for the car, and we think an SLS making the power, driving cross country twice, and laying down some of the fastest lap times at Laguna Seca is a strong indicator.

        Weistec Engineering
        It's the right attitude. Nothing you can really do about that or that anyone in this industry can really do about copycats.
      1. cturbos's Avatar
        cturbos -
        May we have a picture of the headers for the SLS,PLEASE?
        Thank you
      1. JRCART's Avatar
        JRCART -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        This quote is hidden because you are ignoring this member. Show Quote
        This is what I'm looking forward to but won't everyone just rip off your solution?
        There is always going to be somebody out there trying to rip you off. I think most people with AMGs playing at this level of power know Weistec are the ones at the forefront of design and innovation for these cars and will buy from Weistec. Perfect example, look how many people on these boards have posted about purchasing a Kleeman blower for an M156 or M159...I think I can count them on one hand lol.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by JRCART Click here to enlarge
        This quote is hidden because you are ignoring this member. Show Quote
        There is always going to be somebody out there trying to rip you off. I think most people with AMGs playing at this level of power know Weistec are the ones at the forefront of design and innovation for these cars and will buy from Weistec. Perfect example, look how many people on these boards have posted about purchasing a Kleeman blower for an M156 or M159...I think I can count them on one hand lol.
        Kleemann was vocal and now is very quiet and I haven't heard anything. I'm not sure what's up.
      1. Jacob502's Avatar
        Jacob502 -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        This quote is hidden because you are ignoring this member. Show Quote
        Kleemann was vocal and now is very quiet and I haven't heard anything. I'm not sure what's up.
        That's cause they suck
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Jacob502 Click here to enlarge
        This quote is hidden because you are ignoring this member. Show Quote
        That's cause they suck
        Not necessary man. Whatever happened is in the past and they are here to stay. It is what it is. It's competition that will breed the best options and that is essentially what Weistec is saying about concentrating on leading the platform.