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    • RennTech Stage I M157 V8 (63 AMG bi-turbo) turbo upgrade results on pump gas plus dyno comparison to performance package and standard M157 - 673 at the wheels

      Hot on the heels of Weistec displaying their M157 turbo upgrade Renntech is releasing their figures. The car in the dynographs below is a 2012 CLS63 AMG with the full Renntech ball-bearing turbo upgrade featuring billet wheels, Renntech filters, Renntech cooling system, and Renntech hi-flow cats / downpipes. The rest of the exhaust is stock and the pulls were done on a dynojet using 93 octane pump gas with no correction factor.

      Here are the numbers on the turbo upgrade car versus when it had the performance package:


      Peak figures are 673 wheel horsepower for the turbo upgrade car versus 509 wheel horsepower for the performance package. Torque figures are 739 wheel torque versus 536 wheel torque. A difference of just over 200 pound-feet at the wheels, quite significant.

      Here is a dyno comparison between the turbo upgrade, performance package, and standard M157:


      Over 225 rear wheel horsepower gain for the turbo upgrade versus the standard car and almost 300 pound-feet of torque at the wheels. Night and day figures.

      Keep in mind these numbers come on pump gas and are uncorrected. No doubt people will start comparing the peak figures here the Weistec numbers in SAE correction on 100 octane. Renntech states they intend to keep this stage fairly mild with pump gas world wide in mind and a tune pushing under 20 psi.

      Things are really starting to heat up in the M157 scene.
      This article was originally published in forum thread: RennTech Stage I M157 V8 (63 AMG bi-turbo) turbo upgrade results on pump gas plus dyno comparison to performance package and standard M157 - 673 at the wheels started by Sticky View original post
      Comments 40 Comments
      1. Fast Lane's Avatar
        Fast Lane -
        Click here to enlarge Originally Posted by Jacob502 Click here to enlarge
        You don't guess the correction factor! SAE runs estimate factors based on conditions. It will never deflate or inflate as you state. Here you posted the SAE graph showing less whp. Now please have the run against RPM and show us the real numbersClick here to enlarge
        +63

        SAE will certainly neither inflate or deflate at the same time. Its either one or the other. Put that CLS63 on four different runs like the one above and you will find that when switching between SAE and Uncorrected, the Uncorrected graphs will give higher numbers with almost the same exact value. I witnessed this on a same dynojet224 with my friend's TT Supra.



        SAE vs Engine RPM with a smoothing set to 5 is the approved method when measuring whp on
        a Dynojet 224. Everything else doesn't matter and will show higher power values.
      1. Itsbrokeagain's Avatar
        Itsbrokeagain -
        ridiculous! I wonder who will be needing this upgrade in Long Island lol
      1. PetroC63's Avatar
        PetroC63 -
        Honestly, who gives a $#@! if the dyno is corrected or uncorrected? The gains are the most important factor.

        Peak numbers are for bench racers.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Jacob502 Click here to enlarge
        It will never deflate or inflate as you state.
        Mind stating why it will never deflate or inflate? Because he's right, it can.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Fast Lane Click here to enlarge
        SAE will certainly neither inflate or deflate at the same time. Its either one or the other
        He wrong inflate or deflate, not both at the same time not sure where that is coming from.

        Uncorrected shows what the car actually put down. Correcting it with the SAE standard can change it up or down just like he wrote.
      1. NickE63's Avatar
        NickE63 -
        Thats actually not that good of a gain, I managed a 618whp and 802lbs torque with just a EUROCHARGED tune and MBH downpipes kn slip ins on a mustang dyno. My first dyno pull I did a 621whp uncorrected.. 93 octane runs

        http://mbworld.org/forums/w212-amg/4...rocharged.html

        so with your turbo upgrade and a cost of probably 30k Ill gain 50whp $#@! that
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by NickE63 Click here to enlarge
        Thats actually not that good of a gain, I managed a 618whp and 802lbs torque with just a EUROCHARGED tune and MBH downpipes kn slip ins on a mustang dyno. My first dyno pull I did a 621whp uncorrected

        http://mbworld.org/forums/w212-amg/4...rocharged.html

        so with your turbo upgrade and a cost of probably 20k Ill gain 30whp $#@! that
        Where to begin...

        That's on pump gas first of all.

        Secondly, you will gain much more under the curve rather than just straight peak figures which you are looking at.

        It's a wheel upgrade essentially. If you want more power you will need to look in this area. Considering upgraded wheels have shown over 700+ wheel already on race gas it's a matter of how much power you want and you are willing to spend.

        Personally, I like to win races so if you want to keep your stock turbos go ahead I'd prefer to have modded turbos and smoke you. Just a matter of perspective.
      1. NickE63's Avatar
        NickE63 -
        I feel what your saying but if I want to smoke someone ill just use my 800whp GTR, secondly I was saying that's a lot to spend for not so much of a gain
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by NickE63 Click here to enlarge
        I feel what your saying but if I want to smoke someone ill just use my 800whp GTR, secondly I was saying that's a lot to spend for not so much of a gain
        But you don't even have pricing and some people will want more power in the E63/CLS63 at which point looking at the turbos is the next logical step.
      1. NickE63's Avatar
        NickE63 -
        I agree with you believe me! im all about power but I don't like getting robbed.. Renntech is to expensive and I've personally seen a SLR have Renntech headers installed which btw were beautiful quality but it actually made less power than stock!! Sound was amazing but come on man less power
      1. NickE63's Avatar
        NickE63 -
        Renntech pricing is thru the roof! for example their tune is almost $3000 and I made more power from a $900 EUROCHARGED tune, I'll wait for a cheaper better turbo upgrade
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by NickE63 Click here to enlarge
        I agree with you believe me! im all about power but I don't like getting robbed.. Renntech is to expensive and I've personally seen a SLR have Renntech headers installed which btw were beautiful quality but it actually made less power than stock!! Sound was amazing but come on man less power
        If you have those dyno results I'd love to see them.

        Renntech isn't cheap but it's also quality stuff. I mean this is just the beginning. Jumping on them for their pricing when we don't even know the pricing for this upgrade is a bit unfair.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by NickE63 Click here to enlarge
        Renntech pricing is thru the roof! for example their tune is almost $3000 and I made more power from a $900 EUROCHARGED tune, I'll wait for a cheaper better turbo upgrade
        Eurocharged traditionally offers the greatest tuning value in German cars. That doesn't mean Renntech is bad they have held basically M157 record up to this point.
      1. NickE63's Avatar
        NickE63 -
        I'm not saying that, as a matter of fact their quality is unmatched! I'll wait and see the pricing I just don't expect it to be under 20k and that's a lot. My dyno link to mbworld was in my post

        http://mbworld.org/forums/w212-amg/4...rocharged.html
      1. NickE63's Avatar
        NickE63 -
        Oh wait you meant the SLR no I don't have them it wasn't my car. Performance Motorsports of Long Island NY did the install and dyno check out their Facebook it should be uploaded
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by NickE63 Click here to enlarge
        I'm not saying that, as a matter of fact their quality is unmatched! I'll wait and see the pricing I just don't expect it to be under 20k and that's a lot. My dyno link to mbworld was in my post

        http://mbworld.org/forums/w212-amg/4...rocharged.html
        I know I saw your graph I meant regarding the headers:

        Click here to enlarge

        Anyway, I wouldn't expect over $20k. Especially not with two options directly competing already at this stage.
      1. LZH's Avatar
        LZH -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Mind stating why it will never deflate or inflate? Because he's right, it can.
        Why do you even bother Click here to enlarge. Guy has no clue what he's talking about. I'm surprised after all the $#@! he and his brother talk about you and this site, that you are still civil to them after they say they will never post here again...and looks who's back...
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by LZH Click here to enlarge
        Why do you even bother Click here to enlarge. Guy has no clue what he's talking about. I'm surprised after all the $#@! he and his brother talk about you and this site, that you are still civil to them after they say they will never post here again...and looks who's back...
        I try to be civil with everyone and do not hold grudges. So far they are behaving. Ultimately, I want to try to keep the forced induction and performance oriented Mercedes guys together.
      1. LZH's Avatar
        LZH -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        I try to be civil with everyone and do not hold grudges.
        So you wouldn't hold a grudge against Hitler ?

        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        So far they are behaving.
        Sure, but how long do you think that will last ?

        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Ultimately, I want to try to keep the forced induction and performance oriented Mercedes guys together.
        Hey I get the whole camaraderie thing....but I know lots of car enthusiasts who are complete jerkoffs. Driving a nice car doesn't give one the right act like a douche...
        Anyway...off my soapbox.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by LZH Click here to enlarge
        So you wouldn't hold a grudge against Hitler ?
        Well I don't have many genocidal dictators posting here I don't think.

        Click here to enlarge Originally Posted by LZH Click here to enlarge
        Sure, but how long do you think that will last ?
        I don't know.

        Click here to enlarge Originally Posted by LZH Click here to enlarge
        Hey I get the whole camaraderie thing....but I know lots of car enthusiasts who are complete jerkoffs. Driving a nice car doesn't give one the right act like a douche...
        Anyway...off my soapbox.
        I agree. For now... let's see if we can all get along.