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    • Weistec Engineering now offering Stage I Naturally Aspirated M156/63 AMG tune - +47 wheel horsepower on 91 octane, $990

      We thought this eventually might come but not so soon. Weistec has decided to sell a naturally aspirated tune for the M156 V8 which offers gains of 47 wheel horsepower on 91 octane, impressive. In addition to the horsepower gain torque is upped by 32 wheel, the speed limiter is removed, and the throttle response is optimized. The price is a very reasonable $990 which also is credited toward a supercharger purchase should one decide they want more power.




      Key Features:

      • +47 Wheel Horsepower
      • +32 Wheel Torque
      • Eliminate Top Speed Limiter
      • Increased Throttle Response
      • Optimized Fuel and Spark
      • Credit towards Stage 1/1+ Supercharger Systems


      To order: http://weistec.com/m156nas1.html

      This article was originally published in forum thread: Weistec Engineering now offering Stage I Naturally Aspirated M156/63 AMG tune - +47 wheel horsepower on 91 octane, $990 started by Sticky View original post
      Comments 400 Comments
      1. LZH's Avatar
        LZH -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        I'm not going to respond to all of this Mo not because I did not read it or care but simply because I think people just want to wait and see another set of results. Just best to wait for those I think.
        Click here to enlarge

        Click here to enlarge

        I lied...I have plenty of time to get over to Weistec, but I have to wait because I'm saving up for it.
      1. Exeenom's Avatar
        Exeenom -
        Click here to enlarge Originally Posted by JRCART Click here to enlarge
        actually what Mo is saying is correct, but the term he should be using is displacing air, the faster you go the more HP you need to displace the air. What he is absolutely wrong about is not noticing a 10hp gain. He is correct that if we were doing top speed testing that 10hp would result in little or now gain, maybe a mile an hour or two but that same 10hp will be very noticable in normal around town driving and on a 1/8 or 1/4 mile drag strip. Some of his argument is valid but some of it is not.
        Jim, I stated that the 10 hp on the dyno may not show results on the track in some circumstances; I didn't say (or imply) every time someone adds 10 hp on the dyno it will not translate to track results. I just meant that it is certainly possible for a car to show a gain on the dyno but not translate to actual gains on the track for whatever reason.

        For example, lets say two cars trap 135 to 140 mph in the 1/4 mile, one is a CLK BS and one is a CL or E-Class. Since the CL has a much larger surface area for the air to hit, I would expect it will encounter much more air resistance than the CLK BS. In this case, I would guess that a 10 hp may show results on the track for the CLK BS but may not show at all for the CL. There's actually a test video with the Bugatti about this example where they kept increasing hp and measuring trap speeds. Very interesting stuff indeed.... Click here to enlarge
      1. Exeenom's Avatar
        Exeenom -
        Somebody just pointed out to me by e-mail that the +47 whp gain includes an aftermarket filter change and possibly a charcoal filter delete. In my experience, I've seen those two mods result in 10 to 15 hp on the E-Class and CLS-Class. So as I suspected, the +47 whp is not from just a tune only. The tune would have contributed +32 to +37 whp which is still by all means a very impressive gain Click here to enlarge This, to me, would be a lot more realistic and a lot more inline with what I've seen with the E-Class platform.
      1. Exeenom's Avatar
        Exeenom -
        Click here to enlarge Originally Posted by JRCART Click here to enlarge
        Mo, what's going on with your car? Wernt you getting some work done?
        Car is done and I've been waiting on a good day to go out and see what it can do in decent conditions. Last fall it ran 11.7x @ 120 mph on drag radials (full weight)... then in April, I ran 11.9 @ 118 mph on street tires at 1800 ft DA (also full weight). I'm thinking if I get 500 ft of DA and a couple of weight reduction mods, I can dip into 11.5. Then the only thing left would be forced induction to follow your lead and Earls Click here to enlarge
      1. JonsC63AMG's Avatar
        JonsC63AMG -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        I just told you assuming the variables are the same horsepower will show up. If you gained 10 hp it will show unless there is a mitigating factor in the conditions. What part of this was not clear?



        If the ecu adapts and you no longer have the same curve you did when you gained 40 whp on the dyno then you no longer have that 40 whp. So explain to me again how 40 whp that is there will not show? How do you gain 40 whp and not show a trap improvement in similar conditions? I have never seen that happen in my 11 years of drag racing.



        Wow, and in those 9 years you have on me you still didn't learn basic drag racing rules of thumb? And in those 9 extra years (and I still doubt you have the number of passes and track days I do) you saw a time where you added 40 horsepower and the trap speed did not change? I would love to see those slips. I can show mine where I added only ~20 whp and gained 2-3 MPH.

        I'm a kid? I'm a 28 year old adult last time I checked who definitely has spent far more time reading about, researching, and applying this topic than you have over literally the past decade on more forums than I care to count. You may be surprised but there are many things I could teach you and perhaps you should listen from time to time. Your age bares no correlation to your knowledge as time spent applying and researching it are far more important factors. I have seen more than enough to come to an educated conclusion as to what you know, show me the 40 whp not showing up in a slip, please.
        Your completely correct. My stock C63 dynoed 380ish whp. Trapped 114-115. After tune it dynoed 420-430whp. Trapped 118-119. So thats a 4mph increase in the 1/4 mile. Yes the dyno #s show..
      1. JonsC63AMG's Avatar
        JonsC63AMG -
        Click here to enlarge Originally Posted by Exeenom Click here to enlarge
        Somebody just pointed out to me by e-mail that the +47 whp gain includes an aftermarket filter change and possibly a charcoal filter delete. In my experience, I've seen those two mods result in 10 to 15 hp on the E-Class and CLS-Class. So as I suspected, the +47 whp is not from just a tune only. The tune would have contributed +32 to +37 whp which is still by all means a very impressive gain Click here to enlarge This, to me, would be a lot more realistic and a lot more inline with what I've seen with the E-Class platform.
        LMAO! A certain someone thinks that is tune only. Well we all know who has the fastest TUNE ONLY RECORD..
      1. propain's Avatar
        propain -
        Click here to enlarge Originally Posted by JonsC63AMG Click here to enlarge
        Your completely correct. My stock C63 dynoed 380ish whp. Trapped 114-115. After tune it dynoed 420-430whp. Trapped 118-119. So thats a 4mph increase in the 1/4 mile. Yes the dyno #s show..
        Your Stock C63 has far less crank HP than a stock E63. Try to keep up Jon.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Exeenom Click here to enlarge
        Somebody just pointed out to me by e-mail that the +47 whp gain includes an aftermarket filter change and possibly a charcoal filter delete. In my experience, I've seen those two mods result in 10 to 15 hp on the E-Class and CLS-Class. So as I suspected, the +47 whp is not from just a tune only. The tune would have contributed +32 to +37 whp which is still by all means a very impressive gain Click here to enlarge This, to me, would be a lot more realistic and a lot more inline with what I've seen with the E-Class platform.
        The drop in filter is even stated on the graph...
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by JonsC63AMG Click here to enlarge
        Your completely correct. My stock C63 dynoed 380ish whp. Trapped 114-115. After tune it dynoed 420-430whp. Trapped 118-119. So thats a 4mph increase in the 1/4 mile. Yes the dyno #s show..
        Thank you for your example which reinforced it and I hope this does not come off the wrong but there is no way for me to not be correct. The laws of physics are what they are and your before/after shows how the strip works just like a dyno.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by propain Click here to enlarge
        Your Stock C63 has far less crank HP than a stock E63. Try to keep up Jon.
        I think you are missing his point which is the before/after trap speed and dyno numbers. The E63 crank HP is irrelevant in that...
      1. propain's Avatar
        propain -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        I think you are missing his point which is the before/after trap speed and dyno numbers. The E63 crank HP is irrelevant in that...
        The point being made was his C63 with 451 crank HP Dynoed 380 whp. The E63 with 518 crank HP Dynoed a 394 baseline. 67 more HP in the E63 yet only 14 more whp?

        Who cares about the other BS argument. You are not factoring in drag and increased resistances the great your mhp gets. It takes FAR less HP to increase your trap by 1 mph when you are trapping 114. Takes MUCH more when you are trapping 120. The faster you go the greater the resistance. The greater the resistance the more HP it will require to increase the trap by 1 MPH. If you are trapping 150 MPH 20 whp will NOT increase your trap by 1 MPH. AGAIN... this side track argument isnt the problem. The above paragraph is....
      1. JonsC63AMG's Avatar
        JonsC63AMG -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        I think you are missing his point which is the before/after trap speed and dyno numbers. The E63 crank HP is irrelevant in that...
        No point in arguing with him.
      1. Exeenom's Avatar
        Exeenom -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        The drop in filter is even stated on the graph...
        Yes, sorry I happened to miss it. I really think it should be stated either in the description of the thread or at least on their website page (not image). The funny part is that for some reason you never said anything Click here to enlarge If you re-read my very first post in this thread, you'll see that my only concern was gaining almost 50 whp from tune only maybe a little unrealistic.... Then you replied saying "You may find it unrealistic because nobody to this point has changed the parameters or accessed the ECU in the way they were able to". Well, it turns out it was unrealistic because it wasn't tune only.
      1. JonsC63AMG's Avatar
        JonsC63AMG -
        Click here to enlarge Originally Posted by Exeenom Click here to enlarge
        Yes, sorry I happened to miss it. I really think it should be stated either in the description of the thread or at least on their website page (not image). The funny part is that for some reason you never said anything Click here to enlarge If you re-read my very first post in this thread, you'll see that my only concern was gaining almost 50 whp from tune only maybe a little unrealistic.... Then you replied saying "You may find it unrealistic because nobody to this point has changed the parameters or accessed the ECU in the way they were able to". Well, it turns out it was unrealistic because it wasn't tune only.
        Thank You about the part of not being tune only.
      1. Exeenom's Avatar
        Exeenom -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Thank you for your example which reinforced it and I hope this does not come off the wrong but there is no way for me to not be correct. The laws of physics are what they are and your before/after shows how the strip works just like a dyno.
        Please remember that even though there are examples where the 10 whp gain on a dyno will show on the track, there are also examples where it won't show. It is the law of physics as well. As you get to higher speeds, the car may need 20 whp on the dyno to show 1 mph trap at the track. I personally think it is unrealistic to think that a 10 whp will always show a 1 mph at the track regardless of speed, air resistance, shape of the car, complex electronics, etc.... If you don't believe me, ask some of the E55 drag fanatics that's been with us at the track many times.... ask them how much harder it was to get from 128 to 130 mph vs 114 to 115 mph.

        I think what propain and I were trying to illustrate is that sometimes other factors may cause the 10 whp gain NOT to show on the track. Electronics may interfere, aerodynamic efficiency, etc...
      1. Exeenom's Avatar
        Exeenom -
        Click here to enlarge Originally Posted by JonsC63AMG Click here to enlarge
        Thank You about the part of not being tune only.
        LOL.... you're welcomed. Never thought you'd ever thank me Click here to enlarge you always seem to have a problem with whatever I say - at least on mbworld.

        Please remember though that when it is claimed by a tuner, it is completely different than how the "track guys" classify it. Many of the track guys online classify it as tune-only because otherwise, you'd have a million titles: tune-only, tune-filters, tune-filters charcoal-delete, tune-filters aftermarket rims, etc....
      1. propain's Avatar
        propain -
        Click here to enlarge Originally Posted by Exeenom Click here to enlarge
        LOL.... you're welcomed. Never thought you'd ever thank me Click here to enlarge you always seem to have a problem with whatever I say - at least on mbworld.

        Please remember though that when it is claimed by a tuner, it is completely different than how the "track guys" classify it. Many of the track guys online classify it as tune-only because otherwise, you'd have a million titles: tune-only, tune-filters, tune-filters charcoal-delete, tune-filters aftermarket rims, etc....
        As long as your opinion is against me Jon will always agree with you. LOL

        He is just mad because his best time in his "Factory Freak" is an 11.9 on drag radials. If he ran his car half as much as he ran his mouth he would actually learn to drive.

        All who know Jon know that will never happen. He is equally annoying in person as well. A very rare thing.
      1. mramg1's Avatar
        mramg1 -
        Click here to enlarge Originally Posted by Exeenom Click here to enlarge
        Please remember that even though there are examples where the 10 whp gain on a dyno will show on the track, there are also examples where it won't show. It is the law of physics as well. As you get to higher speeds, the car may need 20 whp on the dyno to show 1 mph trap at the track. I personally think it is unrealistic to think that a 10 whp will always show a 1 mph at the track regardless of speed, air resistance, shape of the car, complex electronics, etc.... If you don't believe me, ask some of the E55 drag fanatics that's been with us at the track many times.... ask them how much harder it was to get from 128 to 130 mph vs 114 to 115 mph.
        Mo, I agree 100% with you that a 10RWHP will NOT always show a .1 second decrease. There are contributing factors that BOTh of us are aweare of my friend. BUT, IF one increases their RWHP, they should see an increase in MHP. I know we are both barking up the same tree, but stating it in different ways. And I am glad to see your imput here!!

        Carry on!!!
      1. JRCART's Avatar
        JRCART -
        Click here to enlarge Originally Posted by LZH Click here to enlarge
        Click here to enlarge

        Click here to enlarge

        I lied...I have plenty of time to get over to Weistec, but I have to wait because I'm saving up for it.
        LMAO
      1. Exeenom's Avatar
        Exeenom -
        Click here to enlarge Originally Posted by propain Click here to enlarge
        As long as your opinion is against me Jon will always agree with you. LOL

        He is just mad because his best time in his "Factory Freak" is an 11.9 on drag radials. If he ran his car half as much as he ran his mouth he would actually learn to drive.

        All who know Jon know that will never happen. He is equally annoying in person as well. A very rare thing.
        I always wondered why he was so anti-propain.... I'm guessing it probably started when you proved him wrong with the high speed video a while back, but that was way too long ago bro. I can't imagine that that video would still be the reason Click here to enlarge

        Click here to enlarge Originally Posted by mramg1 Click here to enlarge
        Mo, I agree 100% with you that a 10RWHP will NOT always show a .1 second decrease. There are contributing factors that BOTh of us are aweare of my friend. BUT, IF one increases their RWHP, they should see an increase in MHP. I know we are both barking up the same tree, but stating it in different ways. And I am glad to see your input here!!
        Well said my friend.... it's always nice to have a decent discussion without things getting ugly Click here to enlarge And same here, I appreciate and value your input a great deal Click here to enlarge