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    • Impressions of Weistec's 550+ wheel horsepower supercharged M156 V8 CLK 63 AMG Black Series

      This is part 2 of the BenzBoost visit to Weistec Engineering (Part I here). I was fortunate to be able to sample the supercharger installed on BenzBoost member ecampbell's car. As posted previously, the car hit 551 whp on a dynojet and I was told by Steve that the car is a bit stronger now but has not yet been re-dyno'd. The car has been upgraded to the Stage 2 setup which includes their fuel system upgrades. It also runs through through a catless exhaust, features the Weistec heads, and Hennessey headers.


      Fit and Finish:

      The first thing you should notice is the OEM look of the kit. The supercharger looks as if it belongs there. Absolutely no hood clearance issues or parts forced where they shouldn't be or relocated awkwardly to make this all work. Even the plastic engine cover fits. The only permanent modification is trimming a piece of the top portion of the cover. As written in Part I, if one desires to return the car to stock this piece can be replaced for $60.










      What should also strike you is just how clean the wiring is. One would be hard pressed to notice anything out of place. They use the factory location for everything wherever possible. Clean, simple, and OEM like. Also notice the little details such as the Weistec logo on the reservoir cover.








      Startup Impressions:

      The car started up with no issues. No CEL's, no problems, no idle search, no drama. The only light on the dash was the tire pressure monitor which I have as well, no big deal and nothing related to the supercharger.

      Driving Impressoins:

      Ok, here is the good stuff. Steve took me on a fairly extended test drive. My impressions are from the passenger seat, I did not drive nor would I have wanted to due to the liability concerns. So how does it drive? At low speeds, you can't even really tell it's there. Just drives like the car should drive.

      When the accelerator is depressed though, all hell breaks loose. The car pulls HARD. A very nice combination of low end torque and top end. It pushes you into your seat from beginning to end but also seems to get stronger as it approaches redline. My comparisons are pretty much going to be to a supercharged E92 M3 since that is my experience but there is no waiting. Power is there right when you want it.

      Throttle response seems instant to me but Steve told me he feels it is slightly sharper than stock. All I know is when he hit the gas, he didn't need to tell me. The car simply feels great and it feels strong. Is it faster than a Stage I M3? I definitely think so. Stage II? Close, but the way the power comes on feels better. Hard not to love the power delivery on this car.

      What about traction? Too much power for the street?

      Ah yes, the eternal problem with high power RWD cars. To be honest, this level of power didn't feel like it was too much for the street or too much to control. Yes, you have to be more aware and yes if you apply the throttle in a turn the tail will step out as Steve slightly did on one occasion during the drive. It is not anything that one can not manage and I felt no problem with that level of power for daily driving. Frankly, I would want it. Maybe with Stage 3 traction down low will be a problem but I see this as totally usable and totally fun to use.

      The tires will spin from a stop (they did, wasn't even that bad) but you just need to modulate the throttle. Not really all that different from what you do with the car when stock. It will overpower the traction control system so just be aware of if you have it on or not.

      What about heat soak?

      What heat soak? The car was driven on a hot California Summer day. We got stuck in traffic on the 405 and I had my eyes glued intently on the dash. No lights, no temp issues, car was perfectly fine. A couple more full throttle blasts were done and no loss of power was detected by the butt dyno.

      I do not even have anything to nitpick. I want to be critical but they took all that way from me by providing me with what amounted to a flawless and eye opening experience. Car ran as Black Series owners would expect their cars to run. Just like OEM but with far more power everywhere in the rev range. I really want one, badly. If you have a 63 AMG with an M156 and are on the fence but not sure if you want to justify the expense then I strongly suggest you never go for a ride in one. If you do, put the money aside beforehand as you will be handing it over with a huge grin the moment you step out. It's that good.











      This article was originally published in forum thread: Impressions of Weistec's 550+ wheel horsepower supercharged M156 V8 CLK 63 AMG Black Series started by Sticky View original post
      Comments 36 Comments
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by propain Click here to enlarge
        Any other lightweight mods?
        I made a mistake earlier, the car does not have Vorsteiner lightweight pieces. My mistake!
      1. Sorena's Avatar
        Sorena -
        whine noise + base V8 sound = Win

        nice right-up J Click here to enlarge
      1. M3_WC's Avatar
        M3_WC -
        Wow, that looks so clean.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by M3_WC Click here to enlarge
        Wow, that looks so clean.
        It is clean, incredibly clean.
      1. fastgti69's Avatar
        fastgti69 -
        This is nice, it looks super clean under the hood you cant even tell. Nice write up sticky. Is this all on the stock tranny? I wonder how much torque this thing has, benz are torque monsters.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by fastgti69 Click here to enlarge
        This is nice, it looks super clean under the hood you cant even tell. Nice write up sticky. Is this all on the stock tranny? I wonder how much torque this thing has, benz are torque monsters.
        Yes, all on the stock tranny. You can check the previous dyno to get an idea, but that was on less boost.
      1. propain's Avatar
        propain -
        Video?
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by propain Click here to enlarge
        Video?
        Sorry, no video. There are some vids on youtube.

        Holding the camera while going for a test drive just didn't seem to make much sense.

        Is there something in particular you would want to see?
      1. hworang00's Avatar
        hworang00 -
        I just saw the recently released photos of the new C63 and the thought of getting one of these has crossed my mind multiple times. This is making me drool even more...I'm really starting to fall in love with this car...O_O someone let me borrow about 100k lol...btw how much was this set up? I quickly skimmed this forum may have been listed but it's late...sorry
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by hworang00 Click here to enlarge
        I just saw the recently released photos of the new C63 and the thought of getting one of these has crossed my mind multiple times. This is making me drool even more...I'm really starting to fall in love with this car...O_O someone let me borrow about 100k lol...btw how much was this set up? I quickly skimmed this forum may have been listed but it's late...sorry
        I'll have more details in part 3 but I believe it starts at $15k.
      1. propain's Avatar
        propain -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Sorry, no video. There are some vids on youtube.

        Holding the camera while going for a test drive just didn't seem to make much sense.

        Is there something in particular you would want to see?
        Just to experience it through video. The sound, the instrument panel ect...
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by propain Click here to enlarge
        Just to experience it through video. The sound, the instrument panel ect...
        Gotcha, next time.
      1. ecampbell's Avatar
        ecampbell -
        Click here to enlarge Originally Posted by fastgti69 Click here to enlarge
        This is nice, it looks super clean under the hood you cant even tell. Nice write up sticky. Is this all on the stock tranny? I wonder how much torque this thing has, benz are torque monsters.
        Tq was over 500 ft pounds from 3,500 to almost 6,000 on stage 1 and is low compared to what the car is making now. Car will be going to the dyno in the next week or so and will be laying down some bigger numbers.
      1. LZH's Avatar
        LZH -
        Another great write up...thanks for taking the time to post it and thanks to Ecampbell for allowing Sticky to demo his Black Series. I bet that thing is an absolute monster. Any plans to take it on a road course and track it ?? I'd be interested to hear if there are any heat issues after repeated sessions at high rpms.
      1. ecampbell's Avatar
        ecampbell -
        LZH, probably not only because I suck at driving.

        I spend very little time in the states these days so if the past is an indication of the future, I will end up selling and think why did I do that and start all over again.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by LZH Click here to enlarge
        Another great write up...thanks for taking the time to post it and thanks to Ecampbell for allowing Sticky to demo his Black Series. I bet that thing is an absolute monster. Any plans to take it on a road course and track it ?? I'd be interested to hear if there are any heat issues after repeated sessions at high rpms.
        It was an absolutely pleasure.

        Complete monster is right on, yet it is still civilized. I have heard some 'rumors' about the numbers this car is now putting down and they are VERY impressive. Will have dyno charts for you guys hopefully soon.