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  1. #1
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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.

    Click here to enlarge

    Click here to enlarge

    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

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    WOW.
    Looks like I'm taking a trip down to see Steve.

    Those Weistec seals are also a nice touch...better than epoxy anyway LOL

    I wonder how much more power they could pull out with a 93 octane tune ?

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    Click here to enlarge Originally Posted by LZH Click here to enlarge
    I wonder how much more power they could pull out with a 93 octane tune ?
    I don't know, but a good question. 100 octane as well...

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    Wow this is very interesting can't wait for results
    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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    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    I don't know, but a good question. 100 octane as well...
    I'd go for a 93 tune as I rarely drive my car and can keep 100 octane on hand to mix. A little birdie also told me they are developing headers Click here to enlarge

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    Click here to enlarge Originally Posted by LZH Click here to enlarge
    A little birdie also told me they are developing headers
    Interesting, I did not hear about that.

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    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    Interesting, I did not hear about that.
    Me neither Click here to enlarge

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    Click here to enlarge Originally Posted by LZH Click here to enlarge
    WOW.
    I wonder how much more power they could pull out with a 93 octane tune ?
    Not 100% sure but I would think the gains would be minimal at best, maybe 5 hp?

    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    I don't know, but a good question. 100 octane as well...
    I've seen a gain of .1 to .15 in ET and about 1 to 1-1/2 MPH mixing MS109 with 93 octane with a different tune. I'm sure Weistec would/could offer a race tune if the customer requested one.
    2012 CTS V - Sedan - 6AT

    Stage 1 Mods:
    - 2.5 upper pulley, Ported snout/throttle body, Fluidyne HX, Airaid CAI w/green filter, ID850 injectors

    Stage 2 Mods:
    - American Racing Headers w/X-pipe, 9.1 Lower Pulley, Tune Time Custom Cam, Moroso Dual Catch Cans, Zl1 Lid, Norcal Tank

    Stage 3 Mods:
    - LSA ported/polished heads, 4.5" G-Force intake, Nick Williams 102mm T-body, 8.6 Lower Pulley

    12.18 @ 118.98 - STOCK
    10.87 @ 127.02 - STAGE 1
    10.53 @ 131.31 - STAGE 2
    10.47 @ 133.20 - STAGE 3

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    1 out of 1 members liked this post. Reputation: Yes | No
    Click here to enlarge Originally Posted by LZH Click here to enlarge
    WOW.
    Looks like I'm taking a trip down to see Steve.

    Those Weistec seals are also a nice touch...better than epoxy anyway LOL

    I wonder how much more power they could pull out with a 93 octane tune ?
    Good stuff. Id rather no proof of the Tune on my ECU at all so I would ask to leave the seals off. Click here to enlarge

    Great price too, and I like how its credited toward the SC if you go with one.

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    What gains if any might be expected on a C63 with P31 Development Package. Seeing as these gains are from an E63 it might be reasonable to expect similar gains. I don't think anyone else has shown much in the way of gains on a C63 with P31. Have to wait until they do one to find out.

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    1 out of 1 members liked this post. Reputation: Yes | No
    Click here to enlarge Originally Posted by Mort Click here to enlarge
    What gains if any might be expected on a C63 with P31 Development Package. Seeing as these gains are from an E63 it might be reasonable to expect similar gains. I don't think anyone else has shown much in the way of gains on a C63 with P31. Have to wait until they do one to find out.
    Seeing how the P31 whp is underrated I don't think you would get much more from tuning a P31. They also perform very close. A tuned C63 vs a P31 was very close. (OE did the test) Keep your P31 stock tune and enjoy your warranty.

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    That's a lot of power for just a tune.
    Burger Motorsports
    Home of the Worlds fastest N20s, N54s, N55s, S55s, N63s, and S63s!

    It is the sole responsibility of the purchaser and installer of any BMS part to employ the correct installation techniques required to ensure the proper operation of BMS parts, and BMS disclaims any and all liability for any part failure due to improper installation or use. It is the sole responsibility of the customer to verify that the use of their vehicle and items purchased comply with federal, state and local regulations. BMS claims no legal federal, state or local certification concerning pollution controlled motor vehicles or mandated emissions requirements. BMS products labeled for use only in competition racing vehicles may only be used on competition racing vehicles operated exclusively on a closed course in conjunction with a sanctioned racing event, in accordance with all federal and state laws, and may never be operated on public roads/highways. Please click here for more information on legal requirements related to use of BMS parts.

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    Nice! I've always been wondering if they were going to develop an NA tune. If I had a C63 this would probably be the tune I would get. It's nice that on their "Key Features" list, "drama" is not one of them, hehe.

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    Click here to enlarge Originally Posted by flipm3 Click here to enlarge
    Nice! I've always been wondering if they were going to develop an NA tune. If I had a C63 this would probably be the tune I would get. It's nice that on their "Key Features" list, "drama" is not one of them, hehe.
    There one day into it, hope they dont
    Click here to enlarge
    Drives: Basically a pretty bad ass f250 lifted with 24" wheels! Dpf delete 4" exhaust h&s tuner and intake..

  15. #15
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    Click here to enlarge Originally Posted by propain Click here to enlarge
    I like how its credited toward the SC if you go with one.
    This is a really nice touch.

  16. #16
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    Click here to enlarge Originally Posted by Mort Click here to enlarge
    What gains if any might be expected on a C63 with P31 Development Package.
    I asked, same peak HP.

  17. #17
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    ...and no epoxy
    Click here to enlarge

    1000+WHP WEISTEC 2008 CLK63 Black Series
    790WHP WEISTEC 2012 C63 Black Series
    725WHP WEISTEC 2014 SLS Black Series

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    Click here to enlarge Originally Posted by propain Click here to enlarge
    Seeing how the P31 whp is underrated I don't think you would get much more from tuning a P31. They also perform very close. A tuned C63 vs a P31 was very close. (OE did the test) Keep your P31 stock tune and enjoy your warranty.
    Thanks. I did see the test OE did and have been thinking the same thing. No sense wasting a warranty for little gain.

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    Click here to enlarge Originally Posted by LZH Click here to enlarge
    I'd go for a 93 tune as I rarely drive my car and can keep 100 octane on hand to mix. A little birdie also told me they are developing headers Click here to enlarge
    I think the headers are a collaboration with MBH, but I may be mistaken. At least that's the only thing I have heard anything about.
    Click here to enlarge

    1000+WHP WEISTEC 2008 CLK63 Black Series
    790WHP WEISTEC 2012 C63 Black Series
    725WHP WEISTEC 2014 SLS Black Series

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    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    I asked, same peak HP.
    Thanks for asking. I will keep my eye on it and when I see some solid results on a P31 car posted I'll consider it. I have seen dynojet results in the 425 rwhp range for the P31 cars. I know different dyno different day. I will likely wait until my warranty is up anyway as that makes sense and I have plenty of power for everyday street driving.

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    Click here to enlarge Originally Posted by JRCART Click here to enlarge
    I think the headers are a collaboration with MBH
    Interesting.

  22. #22
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    Click here to enlarge Originally Posted by Mort Click here to enlarge
    Thanks for asking. I will keep my eye on it and when I see some solid results on a P31 car posted I'll consider it. I have seen dynojet results in the 425 rwhp range for the P31 cars. I know different dyno different day. I will likely wait until my warranty is up anyway as that makes sense and I have plenty of power for everyday street driving.
    If you have a P31 car it might be best to just save for the SC although since this is credited it really doesn't matter either way. Think of the tune as a down payment.

    Warranty? Not my thing Click here to enlarge

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    .
    I didn't realize that this thread was on here as well, so I'll post the same thing I posted on mbworld, and this is just based on what I've experienced in the past with many E63s....
    .
    While these are very impressive results, and I respect Weistec Engineering a great deal, gaining almost 50 whp from just a tune on a 100% stock NA E63/CLS63 platform(s) is a bit unrealistic. In my opinion, the car that was dynoed may have been down on power for one reason or another. I've seen more than enough share of stock E/CLS 63 models dyno in the 405 to 410 whp range.
    .
    Great product either way... Click here to enlarge
    2007 E63 P30
    Click here to enlarge

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    Click here to enlarge Originally Posted by Exeenom Click here to enlarge
    While these are very impressive results, and I respect Weistec Engineering a great deal, gaining almost 50 whp from just a tune on a 100% stock NA E63/CLS63 platform(s) is a bit unrealistic.
    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. The dyno is right there anybody is welcome to get the tune and verify independently...

    394 whp with the stock filters in place is the right range. Depending on how cars are broken in and conditions you will see a slight variance which is natural. 410 is on the higher side and with what correction factor are you referring to? This stock E63 shows 385 whp in SAE with 2 pulls:

    Click here to enlarge

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    2 out of 2 members liked this post. Reputation: Yes | No
    E/CLS 63s are rated at 507 hp at the crank and I've seen more than enough of them dyno between 410 (actually seen dyno as high as 419 whp). The CLK63 BS is also rated at exactly the same hp as the E/CLS 63s and they also dyno around the 410 to 415 range (I think jrcart's was 419 whp). At 410 whp, the correction factor would be around 19% loss. If you use the 394 whp figure, then the correction factor would come out close to 22.5% drivetrain loss. And if you use the 385 whp figure, then the loss percentage would come out to about 24%. I think we all know that AMGs don't have that high of a drivetrain loss percentage. Almost every aftermarket Mercedes performance company (big and small) quotes the loss percentage from 17% to 19%. Only one company I know of quotes 20% and they are considered to be on the very high side.

    The point that I was trying to make is this..... since the factory quotes 507 hp at the crank, and the average percentage loss used by almost every company out there is 19%, then a properly running car should dyno around 410 whp. If some cars are dynoing lower than that, then they may not have been running optimally in the first place: maybe bad gas, too much heat, clogged filters, different firmware version, etc.... there are plenty of possibilities. I've been around E63s and CLS63 for too long. I know how a healthy one should dyno because I've seen it. I've also seen some unhealthy ones get diagnosed and brought up to speed as others.

    Please note that I'm not saying it is impossible, I'm just saying it's improbable - especially on a 91 octane tune. Now on a 100 octane tune, then it's a different story.
    2007 E63 P30
    Click here to enlarge

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