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    • Renntech pushes the M157 V8 TT in a 2012 CLS63 AMG to 627 wheel horsepower - Billet turbo and transmission upgrades coming

      Renntech moves the M157 bar yet again with a dyno run of 627 wheel horsepower on 93 octane setting a new M157 record. This comes less than a month after Renntech was the first (and only) tuner to break the 600 wheel horsepower mark on the M157. Renntech now hopes to clear the 700 wheel barrier and the next steps for the M157 are billet turbo upgrades and transmission upgrades. Renntech is aiming to have these ready by the end of the year. Congratulations to Renntech for raising the bar yet again.

      This article was originally published in forum thread: Renntech pushes the M157 V8 TT in a 2012 CLS63 AMG to 627 wheel horsepower - Billet turbo and transmission upgrades coming started by Sticky View original post
      Comments 26 Comments
      1. Portman's Avatar
        Portman -
        what are the new mods?
      1. Portman's Avatar
        Portman -
        how did they jump from 600 to 627?

        sounds like BS to me
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Portman Click here to enlarge
        how did they jump from 600 to 627?

        sounds like BS to me
        Of course it sounds like BS to you. You put more emphasis on crank dynos without timeslips to back them up then progressive improvements at the wheels on a dynojet with timeslips to match. It's amazing how your thought process works.

        The details of the mods are on the graph, try actually looking at it.
      1. M3_WC's Avatar
        M3_WC -
        Click here to enlarge Originally Posted by Portman Click here to enlarge
        how did they jump from 600 to 627?

        sounds like BS to me
        Go post some more flywheel dynos.

        Seriously...you are a piece of work. LOL!
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by M3_WC Click here to enlarge
        Go post some more flywheel dynos.

        Seriously...you are a piece of work. LOL!
        Major +1
      1. m54b25's Avatar
        m54b25 -
        RT revised calibrations are done in-house thus they can get improved power thru their own R&D. Also, if you want they can turn off ECO mode Stop/Start system for M278/M157 =)
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by m54b25 Click here to enlarge
        RT revised calibrations are done in-house thus they can get improved power thru their own R&D. Also, if you want they can turn off ECO mode Stop/Start system for M278/M157 =)
        There you go...
      1. Dueclaws's Avatar
        Dueclaws -
        Click here to enlarge Originally Posted by m54b25 Click here to enlarge
        RT revised calibrations are done in-house thus they can get improved power thru their own R&D. Also, if you want they can turn off ECO mode Stop/Start system for M278/M157 =)
        I'd give you a thumbs-up, but I don't have enough rep points.Click here to enlarge
      1. Jimefam's Avatar
        Jimefam -
        Dammit seeing something like this pisses me off, if I had a tuner who could tune the N63 and have our V8TT right next to that or above it. Someone who has a clue needs to start tuning N63's. Anyways awesome job Renntech and it makes me jealous + I saw the N63 Renntech tune numbers and why are they sooo low? Lower than Dinans :-(
      1. M3_WC's Avatar
        M3_WC -
        Click here to enlarge Originally Posted by Jimefam Click here to enlarge
        Dammit seeing something like this pisses me off, if I had a tuner who could tune the N63 and have our V8TT right next to that or above it. Someone who has a clue needs to start tuning N63's. Anyways awesome job Renntech and it makes me jealous + I saw the N63 Renntech tune numbers and why are they sooo low? Lower than Dinans :-(
        Hasn't Renntech started tuning BMW's. You should give them a call.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Jimefam Click here to enlarge
        Dammit seeing something like this pisses me off, if I had a tuner who could tune the N63 and have our V8TT right next to that or above it. Someone who has a clue needs to start tuning N63's. Anyways awesome job Renntech and it makes me jealous + I saw the N63 Renntech tune numbers and why are they sooo low? Lower than Dinans :-(
        I think Renntech is just getting started on that. Also, it's clear to see where their tuning focus currently is.
      1. fastgti69's Avatar
        fastgti69 -
        Over 600 whp on a stock twin turbo v8, besides the intake and intercooler. This is still on stock downpipes correct, the cats would make a big difference in power too if removed. BEAST.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by fastgti69 Click here to enlarge
        Over 600 whp on a stock twin turbo v8, besides the intake and intercooler. This is still on stock downpipes correct, the cats would make a big difference in power too if removed. BEAST.
        I don't think it's stock downpipes. I assume the cats are in the downpipes or right there and the cats have been modified. Maybe there are two sets.
      1. M3_WC's Avatar
        M3_WC -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        I don't think it's stock downpipes. I assume the cats are in the downpipes or right there and the cats have been modified. Maybe there are two sets.
        The CLS63 has one set of primary cats, no secondary cats. Definitely should see better gains going full catless.

        Vivid Racing project CLS63, catless setup:

        Attachment 15843
        Attachment 15844
        Attachment 15845
      1. fastgti69's Avatar
        fastgti69 -
        vivid racing? surprised..
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by M3_WC Click here to enlarge
        The CLS63 has one set of primary cats, no secondary cats. Definitely should see better gains going full catless.

        Vivid Racing project CLS63, catless setup:

        Attachment 15843
        Attachment 15844
        Attachment 15845
        Well there we go, looks like they are right up front.
      1. Dueclaws's Avatar
        Dueclaws -
        There are 2 cats inside each housing, from what I understand. I can find the post on another site if you want to see it: came from an owner who opened the cat housing.
      1. Dueclaws's Avatar
        Dueclaws -
        Here's the quote: "you see it from outside as 1 primary cat, but inside there is 2 on each side.

        the second O2 sensor is in the middle and there it is empty ( i saw it by my own eyes )

        if anyone opened SLR exhuast, he will know what i am talikg about, because it is the same method, and i am sure it is less than 600 cell"
      1. m54b25's Avatar
        m54b25 -
        Click here to enlarge Originally Posted by Dueclaws Click here to enlarge
        Here's the quote: "you see it from outside as 1 primary cat, but inside there is 2 on each side.

        the second O2 sensor is in the middle and there it is empty ( i saw it by my own eyes )

        if anyone opened SLR exhuast, he will know what i am talikg about, because it is the same method, and i am sure it is less than 600 cell"
        Yes, you are correct. The M157 contains 2 ceramic monolith with a volume of 1.5L per side. Each catalytic front monolith has 600cpsi cel and the rear (after post-o2 planar sensor) 400cpsi cel.
      1. m54b25's Avatar
        m54b25 -
        Click here to enlarge Originally Posted by Dueclaws Click here to enlarge
        I'd give you a thumbs-up, but I don't have enough rep points.Click here to enlarge
        Thanks! Did same!