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    • BenzBoost visits Weistec Engineering Part 1 - General Overview and some Stage III M156 supercharger details

      I went to go visit Weistec today at their facility located in Orange County, specifically off Edinger on the 55 freeway. There has been a lot of interest regarding Weistec and rightfully so with them having developed the first supercharger package for M156/M159 motors. I conducted a 30 minute interview with the guys there asking many of the questions BenzBoost forum members wanted answered and also got an opportunity to sample a supercharged CLK63 Black Series which, suffice it to say, blew me away.

      This is the first part of a 3 part article. This first part will be an overview, the second part will be my impressions of the supercharger kit, and the third part will be the interview. The interview will be posted last due to the time it will take to transcribe the interview which is over 30 minutes. Part 2 will be posted on Monday next week with Part 3 following.

      Let me begin with the Weistec facility. It is located in Santa Ana, CA. Not huge, as it does not need to be since Weistec is primarily an engineering firm. They are not an install, dyno, or repair center. I met the two owners Steve Atneyel and Michael Weiss. They were nice, courteous, and professional. They were not at all upset I was late (hey, CA traffic).



      We began with walking into the back (no cameras allowed, they made an exception obviously) and going over some of the components that make up their supercharger kit as well as showing me their preparation for the Stage III low compression built motor setup that is coming. In the first shot below you see the parts laid out that make up the supercharger kit.

      For those who have been wondering, yes, it is a Lysholm unit. A 2.3 liter Lysholm unit to be exact. They are also able to accommodate customers who may want to work outside the basic kit boundaries. The point is really to show they have flexibility if needed.









      Speaking of flexibility, here are shots of their Stage 3 kit with a darton sleeved block which will be offered after the Stage 1 and 2 are wrapped up with CARB certification. The block should be good for up to 1500 horses. In the five pictures below you get shots of the block as well as the stock crank which is forged. There are no current plans to change the stroke. As far as the top half of the motor is concerned Weistec states they will not modify the cams but do offer upgraded heads which were featured on the car I had the pleasure of sampling (which belongs to BenzBoost member ecampbell).











      The rods and pistons are also obviously changed. The picture below shows the stock piston and rod with the aftermarket piston. The stock pistons are made by Mahle (same manufacturer BMW uses as well as other German OEM's). They are considered the weak point in the motor, before the rod. Yes, the P31 internals will support slightly more boost but ultimately on 91 octane the fuel will become the limiting factor with boost.







      After I toured the facility we did an interview, which as stated will be posted next week, as well as went for a ride in ecampbell's car. I will write a full article of impressions which will be Part 2 but suffice it to say I ran out of superlatives.

      Just in general, I was blown away by Weistec. I underestimated them and I believe the vast majority of Mercedes forum posters have as well. They took plenty of time to answer every question I had. They took me on an extended test drive to sample the kit. I'm trying to look for things to critique but I do not have even much to nitpick. Even the bathroom was super clean which compared to other SoCal tuners, yes, is something to be proud of.

      What it really boiled down to for me was the OEM aspects of what they do. No fluff, no fuss. The kit installation (which you will be seeing photos of in Part 2) is incredibly clean. The only factory part which needs to be permanently modified is a section of the factory AMG plastic motor covering which can be replaced for $60 if one wishes to return the car to stock.

      If I sound like I am glowing about Weistec it is because I am. They seemed like they came out of nowhere and frankly I (and others) did not know enough about them to be commenting to begin with. I have visited most of the European tuners in Southern California. I have done business with many of them. Very few operated at a level of professionalism and quality which I felt was on par.

      We will get into more of the details in Part 2 but I was almost shocked they were not even willing to sling a little bit of mud. And believe me, they could. Totally classy, politically correct, and professional. I gave my word I would not reveal all the details and I will not but if they wanted to bury certain competitors they most certainly could. They just seem like a close knit group of four guys who like what they do. I came away from Weistec wishing I had their setup on one of my own cars. From the clean install, to excellent tuning on 91 octane (no meth, not fans of it), and to the CARB certification coming in the next month they deserve a tremendous amount of respect for what they have achieved thus far. What more is there to say?

      This article was originally published in forum thread: BenzBoost visits Weistec Engineering Part 1 - General Overview and some Stage III M156 supercharger details started by Sticky View original post
      Comments 39 Comments
      1. DD GT3 RD's Avatar
        DD GT3 RD -
        Thanks for the write up. Well done! Good to find out more info on them.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by DD GT3 RD Click here to enlarge
        Thanks for the write up. Well done! Good to find out more info on them.
        You'd like their blower Sammy... I'm telling you it's impressive and I do not have low standards for performance cars.

        You should check out the shop C63 some time, maybe we can arrange something.
      1. DD GT3 RD's Avatar
        DD GT3 RD -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        You'd like their blower Sammy... I'm telling you it's impressive and I do not have low standards for performance cars.

        You should check out the shop C63 some time, maybe we can arrange something.
        Haha..Im sure its very nice but Im not dropping 15k or anything near it into this car. If anything Ill be buying some coilovers. This car needs handling improvements and im sure adding some more weight on top of the engine and at the front of the car wont do much to help this thing handle any better. In fact Id sell it and buy a new car first!
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by DD GT3 RD Click here to enlarge
        Haha..Im sure its very nice but Im not dropping 15k or anything near it into this car. If anything Ill be buying some coilovers. This car needs handling improvements and im sure adding some more weight on top of the engine and at the front of the car wont do much to help this thing handle any better. In fact Id sell it and buy a new car first!
        You have no idea what you are missing.

        That is a good question though, wish I would have thought of it. I should have asked how much weight the blower adds, damn it.
      1. 0-60Motorsports's Avatar
        0-60Motorsports -
        Looks like a great facility and very proffesional and clean.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by 0-60Motorsports Click here to enlarge
        Looks like a great facility and very proffesional and clean.
        Wouldn't hurt to maybe talk and see if they would be interested in a dealer located in Bahrain.

        I know they have sold a few in the Middle East, namely Jordan, but hey, can't hurt to see right?
      1. 0-60Motorsports's Avatar
        0-60Motorsports -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Wouldn't hurt to maybe talk and see if they would be interested in a dealer located in Bahrain.

        I know they have sold a few in the Middle East, namely Jordan, but hey, can't hurt to see right?
        LOL Im already on it. Cheers.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by 0-60Motorsports Click here to enlarge
        LOL Im already on it. Cheers.
        Well then, great minds think alike...
      1. 0-60Motorsports's Avatar
        0-60Motorsports -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Well then, great minds think alike...
        I will most probably cater to markets like Saudi and Kuwait and Qatar as thye are max 4 hours drive away from Bahrain.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by 0-60Motorsports Click here to enlarge
        I will most probably cater to markets like Saudi and Kuwait and Qatar as thye are max 4 hours drive away from Bahrain.
        So you will be a dealer?
      1. 0-60Motorsports's Avatar
        0-60Motorsports -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        So you will be a dealer?
        I sent an email over today so probably wont get a reply till tomorrow as its the weekend there. I hope I will be their dealer but I'll have to do a lot of research into the mods etc that they do to educate myself on Mercedes power upgrades as this is something new.
      1. LZH's Avatar
        LZH -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Definitely NOT all smoke and mirrors. I'm surprised more people do not call, visit, or request info directly from them.
        Ditto. Many people place way too much emphasis on what they read on the Internet rather than just picking up the phone and speaking directly to the manufacturer. From what everyone has said and from my personal experience with steve, they have been more than happy to spend time with anyone interested either in person (evidenced by your excellent writeup), or on the phone. It's clear they dont wate much time on these forums but rather, keep their focus where it should be - on their development and servicing customers. It would appear they are doing a fantastic job at both. Thanks for taking the time to do all this....it's a valuable addition to the forum.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by LZH Click here to enlarge
        Ditto. Many people place way too much emphasis on what they read on the Internet rather than just picking up the phone and speaking directly to the manufacturer. From what everyone has said and from my personal experience with steve, they have been more than happy to spend time with anyone interested either in person (evidenced by your excellent writeup), or on the phone. It's clear they dont wate much time on these forums but rather, keep their focus where it should be - on their development and servicing customers. It would appear they are doing a fantastic job at both. Thanks for taking the time to do all this....it's a valuable addition to the forum.
        No problem, visits like that are a ton of fun. Was worth it just for the ride in ecampbell's car alone. I agree with everything you said.
      1. Sonny's Avatar
        Sonny -
        Cool write up. Thanks for the effort.

        I know how time consuming transcribing interviews can be. I'm looking forward to part 2 and 3.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Sonny Click here to enlarge
        Cool write up. Thanks for the effort.

        I know how time consuming transcribing interviews can be. I'm looking forward to part 2 and 3.
        It's incredibly time consuming but no big deal. I like to put in the extra effort for the benefit and people see it and appreciate it. The only way to "win" this battle is with quality and effort that ultimately pays off in the end. No shortcuts...
      1. Sonny's Avatar
        Sonny -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        It's incredibly time consuming but no big deal. I like to put in the extra effort for the benefit and people see it and appreciate it. The only way to "win" this battle is with quality and effort that ultimately pays off in the end. No shortcuts...
        We appreciate it. No question how dedicated and motivated you are.
      1. Sticky's Avatar
        Sticky -
        Just wanted to give you guys an update that Part III should be up tomorrow. Hours of transcribing...
      1. Sonny's Avatar
        Sonny -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Just wanted to give you guys an update that Part III should be up tomorrow. Hours of transcribing...
        Defintely looking forward to it. Thank you.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Sonny Click here to enlarge
        Defintely looking forward to it. Thank you.
        My pleasure, was a great interview. A lot of good stuff in it.