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  1. #1
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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.

    Click here to enlarge

    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.

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    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.

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    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.

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  2. #2
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    Part 2 now officially up Click here to enlarge

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    Great writeup!
    The photos certainly show a professional product and install - that's for sure!

    How does the SC sound? Is the 'whine' out of place given the meaty sound you would expect from the M156?

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    Click here to enlarge Originally Posted by Eirebenz Click here to enlarge
    Great writeup!
    The photos certainly show a professional product and install - that's for sure!

    How does the SC sound? Is the 'whine' out of place given the meaty sound you would expect from the M156?
    Ah, I was waiting for someone to ask about the sound. Considered going through to edit it to add that but responding in the thread should suffice.

    You can hear the blower, no doubt about it. Does it whine? Yep. Is it annoying? No. Is it too loud? No. Also the higher boost setups will be louder than the lower boost setups.

    I think the blower sound meshes quite well, but that is me. I like for something there to let people know not to mess with you.

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    Great impressions.

    I don't know what it is about being the passenger in one of these ride-alongs but the cars tend to feel blisteringly fast.

    Glad to hear you enjoyed yourself.

    Personally, I love the blower whine.

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    Click here to enlarge Originally Posted by Sonny Click here to enlarge
    Great impressions.

    I don't know what it is about being the passenger in one of these ride-alongs but the cars tend to feel blisteringly fast.

    Glad to hear you enjoyed yourself.

    Personally, I love the blower whine.
    Being a passenger usually does feel faster. It was quick, no doubt about it.

    I don't mind the blower whine either.

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    Great writeup and nice pictures! You didn't happen to bring a Vbox along with you for your test drive did you? Click here to enlarge

    Did you notice if the transmission experienced any hiccups when doing the 1-2 or 2-3 shift at WOT? That seemed to be a problem for guys running NOS, with the tranny not being able to react quick enough before the limiter kicked in. Maybe 550 whp isn't at that threshold yet?

    You mentioned this car had a catless exhaust, but is it still running the stock manifolds?

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    Click here to enlarge Originally Posted by Nrgy Click here to enlarge
    You didn't happen to bring a Vbox along with you for your test drive did you?
    I don't know if 60-130 sprints during rush hour are advised Click here to enlarge They have done 60-130 runs, best to contact them directly for expected figures. You will see in Part 3 how they feel about numbers, they want you guys to get them as they prefer third party figures and I agree.

    Click here to enlarge Originally Posted by Nrgy Click here to enlarge
    Did you notice if the transmission experienced any hiccups when doing the 1-2 or 2-3 shift at WOT? That seemed to be a problem for guys running NOS, with the tranny not being able to react quick enough before the limiter kicked in. Maybe 550 whp isn't at that threshold yet?
    He hit the limiter one time but that was due to how Steve shifted it. No hiccups whatsover.

    You will have an answer to your tranny and nitrous question in Part 3.

    Click here to enlarge Originally Posted by Nrgy Click here to enlarge
    You mentioned this car had a catless exhaust, but is it still running the stock manifolds?
    The car is running Hennessey headers.

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    Nice writeup.

    How much boost for this test?
    Stock cams?
    Have you driven in a C63 that had a tune plus headers and catless exhaust?
    How would you compare the two?
    Why didnt you bring a Vbox and do a 60-130 pull? Click here to enlarge
    Any suspension work?
    Tune only 60-130: 8.57
    Tune only 1/4 mile record: 11.531 @ 122.12



  10. #10
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    Click here to enlarge Originally Posted by propain Click here to enlarge
    Stock cams?
    Yes.

    Click here to enlarge Originally Posted by propain Click here to enlarge
    Have you driven in a C63 that had a tune plus headers and catless exhaust?
    Yes, this was much stronger.

    Click here to enlarge Originally Posted by propain Click here to enlarge
    Why didnt you bring a Vbox and do a 60-130 pull?
    Have you ever done a 60-130 pull in 90 degree weather at 3 PM in Costa Mesa/Santa Ana area of SoCal? Pulling off a 0-60 pull is hard enough.

    I wasn't there for them to set any record times.

    Click here to enlarge Originally Posted by propain Click here to enlarge
    Any suspension work?
    I think the car is lowered, not sure what beyond that.

    Click here to enlarge Originally Posted by propain Click here to enlarge
    How much boost for this test?
    More than Stage 1, how much I'm not sure. I'll find out!

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    Nice.

    How fast did you get it up to?
    Any stomps from a dig?
    What do they extimate the 1/4.. 0-60 ect... "Much stronger" to me means very low 10's on drags. Whats your opinion?
    What were the settings? ESP off? ect..
    LSD rear?
    Any other lightweight mods?
    Tune only 60-130: 8.57
    Tune only 1/4 mile record: 11.531 @ 122.12



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    Click here to enlarge Originally Posted by propain Click here to enlarge
    How fast did you get it up to?
    We hit triple digits a handful of times, I don't think we ever exceeded 120.

    Click here to enlarge Originally Posted by propain Click here to enlarge
    Any stomps from a dig?
    Yep, that is where the bit of wheelspin happened. Wasn't even that bad.

    Click here to enlarge Originally Posted by propain Click here to enlarge
    What do they extimate the 1/4.. 0-60 ect... "Much stronger" to me means very low 10's on drags. Whats your opinion?
    I think this particular example is easily 10 second capable. What you have to keep in mind is the entire curve is shifted so you will see a far larger discrepancy down low than just up high. Put a car with bolt on's next to one of these from a low speed roll and it is game over pretty quickly.

    Click here to enlarge Originally Posted by propain Click here to enlarge
    What were the settings? ESP off? ect..
    I believe ESP was on during the first blast in which it cut in (slightly) and then turned off.

    Click here to enlarge Originally Posted by propain Click here to enlarge
    LSD rear?
    Yes, doesn't the CLK63 BS have it standard?

    Click here to enlarge Originally Posted by propain Click here to enlarge
    Any other lightweight mods?
    No.

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    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    We hit triple digits a handful of times, I don't think we ever exceeded 120.



    Yep, that is where the bit of wheelspin happened. Wasn't even that bad.



    I think this particular example is easily 10 second capable. What you have to keep in mind is the entire curve is shifted so you will see a far larger discrepancy down low than just up high. Put a car with bolt on's next to one of these from a low speed roll and it is game over pretty quickly.



    I believe ESP was on during the first blast in which it cut in (slightly) and then turned off.



    Yes, doesn't the CLK63 BS have it standard?



    Yes, some carbon pieces from Vorsteiner.
    Sounds awesome. I keep forgetting were talking about a Black Series. I was thinking his car was a C63. Yes, LSD standard.

    Yes, from a roll based on what LZH said it did (6 seconds flat) is sure does stomp any C63 I know of. Including Dad's doing a large NOS shot with seats removed and light weight mods on drags.

    Anything done to lower the compression in stage 2?
    Tune only 60-130: 8.57
    Tune only 1/4 mile record: 11.531 @ 122.12



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    Click here to enlarge Originally Posted by propain Click here to enlarge
    Anything done to lower the compression in stage 2?
    Nope, that is Stage 3.

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    Click here to enlarge Originally Posted by propain Click here to enlarge
    How much boost for this test?
    It was running 9-10 psi... no wonder it felt so good!

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    Absolutely fantastic write up Click here to enlarge I really like how the look and feel of the kit is very stock like.

    I can't wait to see a new C63 record Click here to enlarge

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    Click here to enlarge Originally Posted by Exeenom Click here to enlarge
    Absolutely fantastic write up Click here to enlarge I really like how the look and feel of the kit is very stock like.

    I can't wait to see a new C63 record Click here to enlarge
    You should already have this kit on your car... Click here to enlarge

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    Was the car only driven in M mode or was it run in sport to redline
    Click here to enlarge
    Drives: Basically a pretty bad ass f250 lifted with 24" wheels! Dpf delete 4" exhaust h&s tuner and intake..

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    1 out of 1 members liked this post. Yes Reputation No
    I had a friend of mine do a drive by for me in the black series to check the supercharger noise from outside and I was reminded of an F18 making a carrier landing, the roar ofthe exhaust combined with the whine of the SC was just simply awesome.

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    Click here to enlarge Originally Posted by Maverick1975 Click here to enlarge
    I had a friend of mine do a drive by for me in the black series to check the supercharger noise from outside and I was reminded of an F18 making a carrier landing, the roar ofthe exhaust combined with the whine of the SC was just simply awesome.
    Can I be your friend?Click here to enlarge
    2011 C63 ///AMG / BLK on BLK / P31 / LSD / CF Trim / Keyless Go / Rear Camera / All the other stuff too!!
    Click here to enlarge
    2011 X3 2.8 Vermillion Red/Black loaded

  21. #21
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    Click here to enlarge Originally Posted by Dodger63 Click here to enlarge
    Was the car only driven in M mode or was it run in sport to redline
    It was run in sport to redline, upshifted automatically.

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    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!

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    whine noise + base V8 sound = Win

    nice right-up J Click here to enlarge

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    Wow, that looks so clean.

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    Click here to enlarge Originally Posted by M3_WC Click here to enlarge
    Wow, that looks so clean.
    It is clean, incredibly clean.

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