• Renntech breaks their own CLS63 AMG / M157 twin turbo V8 1/4 mile record with a 10.90@128.9

      The Renntech Stage 2 tune made an impressive debut on the drag strip propelling the first CLS63 AMG into the 10's as well as the first M157 5.5 liter twin turbo V8. That was done with a run of 10.98@129.4. Renntech has managed to improve on this by almost one full tenth with a run of 10.90@128.96. The 60 foot in this latest run is 1.703 versus the previous 1.797 which explains the better ET as well as the slight drop in trap speed. Congratulations on the new overall M157 record!



      This article was originally published in forum thread: Renntech breaks their own CLS63 AMG / M157 twin turbo V8 1/4 mile record with a 10.90@128.9 started by Sticky View original post
      Comments 21 Comments
      1. propain's Avatar
        propain -
        Amazing! Spring cant come quick enough... RENNtech I will be calling you!
      1. Benz-O-Rama's Avatar
        Benz-O-Rama -
        I'm annoyingly happy for them. All I want is a 10sec slip.
      1. m54b25's Avatar
        m54b25 -
        The M278 will be next into the 11 sec with RENNtech =)
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by m54b25 Click here to enlarge
        The M278 will be next into the 11 sec with RENNtech =)
        This I look forward to Click here to enlarge
      1. bigbobb's Avatar
      1. Sticky's Avatar
        Sticky -
        That is not this run...
      1. JRCART's Avatar
        JRCART -
        This motor looks like its going to be an absolute monster. Congrats Renntech.
      1. Dueclaws's Avatar
        Dueclaws -
        Click here to enlarge Originally Posted by m54b25 Click here to enlarge
        The M278 will be next into the 11 sec with RENNtech =)
        +1Click here to enlarge
      1. SLS AMG's Avatar
        SLS AMG -
        Excellent, but I'm pretty sure they had weight reduction mods on this baby
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by SLS AMG Click here to enlarge
        Excellent, but I'm pretty sure they had weight reduction mods on this baby
        Based on?
      1. SLS AMG's Avatar
        SLS AMG -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Based on?

        If you look at this (not %100 accurate), maybe with a maximum %3-5 error.
        http://www.dragtimes.com/horsepower-...calculator.php

        hit theses values:
        1/4: 10.90
        Trap ET: 128.96
        weight of the car incl. driver: 4207.9 (this is the stock weight of 2012 CLS63 with a 75kg driver, Knowing that thier car weighs less with lighter wheels and tires)

        You will find that the crank numbers are around 670HP. Now this is with the tune and exhaust and lighter wheels and tires.

        Renntech claim that the CLS2012 is underrated posting a dyno sheet of the NON-PP making 483 against a PP making 516, and claiming that it is underrated from the factory (I still dont know how) . They tuned the NON-pp making it 583 , a gain of 100HP. One thing is true, that the gains are real, and yes, the 100Hp has been achieved by tuners other than renntech long ago.

        Attachment 14168

        - diffrent dynos read diffrent numbers. This is a German car, In Germany they put this car on a dyno MAHA, which gives crank numbers. Look at this dyno, same car diffrent tune, (this was the tuner that Andy from MHP was working with). by the way, the NON-PP in Europe make more power than the NON-PP in the US due to emmission standards.

        Attachment 14169


        look at the wheel and drag power, you can see that the gains are over 100RWHP. The stock numbers are 528 and the tuned numbers are 627 (crank numbers)

        Here is more info, from this link:
        http://www.modernhorsepower.com/cgi-...HPM157V3CDTNPP


        I dont know how Renttech are cliaming they can achieve 669HP with only a tune and claim that the car is underrated from the factoryClick here to enlarge. I want to see thier numbers on a DynoMahaClick here to enlarge
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by SLS AMG Click here to enlarge
        If you look at this (not %100 accurate), maybe with a maximum %3-5 error.
        http://www.dragtimes.com/horsepower-...calculator.php

        hit theses values:
        1/4: 10.90
        Trap ET: 128.96
        weight of the car incl. driver: 4207.9 (this is the stock weight of 2012 CLS63 with a 75kg driver, Knowing that thier car weighs less with lighter wheels and tires)

        You will find that the crank numbers are around 670HP. Now this is with the tune and exhaust and lighter wheels and tires.

        Renntech claim that the CLS2012 is underrated posting a dyno sheet of the NON-PP making 483 against a PP making 516, and claiming that it is underrated from the factory (I still dont know how) . They tuned the NON-pp making it 583 , a gain of 100HP. One thing is true, that the gains are real, and yes, the 100Hp has been achieved by tuners other than renntech long ago.

        Attachment 14168

        - diffrent dynos read diffrent numbers. This is a German car, In Germany they put this car on a dyno MAHA, which gives crank numbers. Look at this dyno, same car diffrent tune, (this was the tuner that Andy from MHP was working with). by the way, the NON-PP in Europe make more power than the NON-PP in the US due to emmission standards.

        Attachment 14169


        look at the wheel and drag power, you can see that the gains are over 100RWHP. The stock numbers are 528 and the tuned numbers are 627 (crank numbers)

        Here is more info, from this link:
        http://www.modernhorsepower.com/cgi-...HPM157V3CDTNPP


        I dont know how Renttech are cliaming they can achieve 669HP with only a tune and claim that the car is underrated from the factoryClick here to enlarge. I want to see thier numbers on a DynoMahaClick here to enlarge
        This still isn't evidence of weight reduction.
      1. SLS AMG's Avatar
        SLS AMG -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        This still isn't evidence of weight reduction.
        I understand, but can you give proof that they didnt??

        I'm just explaining why I think they went that direction. I have seen a 2012 CLS63 Bin Yas drag strip in UAE. It had an ECU tune only. Car was completetly stock, runing stock wheels and tires. it made passes @ 11.7-11.9. This was not long ago. That CLS also had the Renntech tune. The same day A C63 with headers+tune was runin @ 11.8
        I certainly did not see it run 11.2
      1. Itsbrokeagain's Avatar
        Itsbrokeagain -
        Why does it matter if they did a weight reduction? In order to gain almost a second at the strip they would have needed to drop 700-1000lbs. How in the world would they have done that?

        Im happy for them. I saw this motor make 508whp with a really base tune from OE Tuning....I'm sure it has more in it...
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by SLS AMG Click here to enlarge
        I understand, but can you give proof that they didnt??
        You are just speculating they did though. They listed all the mods and I have no reason to doubt Renntech.
      1. m54b25's Avatar
        m54b25 -
        Got to remember RENNtech Software revision it's the key for more torque & power figures not posted publicly yet for latest 1/4 mile times of 10.9sec@ 129'smph run. Along, the supported hardware upgrade was LSD, slicks, & light exhaust mods. No weight reduction it's needed & I don't think owner would be pleased to remove parts from her car.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by m54b25 Click here to enlarge
        Got to remember RENNtech Software revision it's the key for more torque & power figures not posted publicly yet for latest 1/4 mile times of 10.9sec@ 129'smph run. Along, the supported hardware upgrade was LSD, slicks, & light exhaust mods. No weight reduction it's needed & I don't think owner would be pleased to remove parts from her car.
        Thank you for clearing that up.
      1. SLS AMG's Avatar
        SLS AMG -
        The owner is a Lady?
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by SLS AMG Click here to enlarge
        The owner is a Lady?
        That makes it all the more awesome.
      1. SLS AMG's Avatar
        SLS AMG -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        That makes it all the more awesome.
        certainly your point of view.Click here to enlarge