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  1. #1
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    COBB stage 2 and stage 2+ thread

    Lets get a discussion going. I am sure someone has info to share. Any reviews? I am sure some of you have seen this dyno from that other BMW website.
    Click here to enlarge
    It's too bad she didnt get a baseline.
    Click here to enlarge


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    Bummed about no baseline but we pretty know what these things dyno at.

    What were her supporting mods?

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    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    Bummed about no baseline but we pretty know what these things dyno at.

    What were her supporting mods?
    HPF FMIC
    BMS DCI
    AR catless
    CP-e catback
    and COBB, of course
    Click here to enlarge


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    Mimics my setup, except I dont have the exhaust. And I have meth and a charge pipe.
    Click here to enlarge


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    Those number sound right to me. I went 117 plus on that same map and pump gas and I'm pretty confident you need to be right around there to do so esp in a manual car.

  6. #6
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    I likely need a new O2 sensor so I can't go to the track right now without it. Running rich right now due to the failed sensor.

    Before it failed recently i would say 400-410 whp in cool temps isn't out of the question.

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    Chris do you know any specifics about the valve timing? That would be a proven mechanical advantage that the flash tunes have that piggies cannot access.

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    Those are uncorrected numbers in cool temps. Still good but I'd say they are just under 400/440 corrected. I've had a 20hp/tq difference on the same dyno because of the weather on more than one occasion
    07 e92 335i Best run: 11.83@ 120.04 w/ 1.84 60' & 2127 DA

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    Click here to enlarge Originally Posted by boom Click here to enlarge
    Chris do you know any specifics about the valve timing? That would be a proven mechanical advantage that the flash tunes have that piggies cannot access.
    Terry@BMS stated that he toyed with VANOS on the dyno and found no gains. Maybe he can chime in? Changing the timing angle of vanos should in theory get us some more power though, especially up top.

  10. #10
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    Click here to enlarge Originally Posted by Trevor008 Click here to enlarge
    Those are uncorrected numbers in cool temps. Still good but I'd say they are just under 400/440 corrected. I've had a 20hp/tq difference on the same dyno because of the weather on more than one occasion
    Shows STD correction?

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    Click here to enlarge Originally Posted by themyst Click here to enlarge
    Shows STD correction?
    You're exactly right, I missed that. The others that dyno'd that day were all talking about uncorrected so I didn't even bother looking.
    07 e92 335i Best run: 11.83@ 120.04 w/ 1.84 60' & 2127 DA

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    Click here to enlarge Originally Posted by boom Click here to enlarge
    Chris do you know any specifics about the valve timing? That would be a proven mechanical advantage that the flash tunes have that piggies cannot access.
    I'm really curious as well. you can log VANOS set points and actual through the Cobb logging thingamajig. Not sure if Cobb can log the stock map also, but this could tell us the changes they made. Or the BT can be used for stock

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    Click here to enlarge Originally Posted by Trevor008 Click here to enlarge
    You're exactly right, I missed that. The others that dyno'd that day were all talking about uncorrected so I didn't even bother looking.
    Corrected he was in the 420ish range so going std actually dropped him down due to awesome conditions.

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    I dyno tested the S2+ on our stock intercooler.muffler automatic 135i a few weeks ago and did some back to back runs with JB4 map 2 and an under development map 6. Down low it had more torque but up top was pretty similar in performance to JB4 map 2.

    Click here to enlarge

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    One thing Cobb tuned out is the famous VANOS changeover torque bump at 4.3k rpm that happens on all cars due to stock VANOS logic...maybe some other stuff too but this is one I know of for sure...if you look at the jb4 vs Cobb dynos you'll see Cobb is smoother in that region

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    Click here to enlarge Originally Posted by Terry@BMS Click here to enlarge
    I dyno tested the S2+ on our stock intercooler.muffler automatic 135i a few weeks ago and did some back to back runs with JB4 map 2 and an under development map 6. Down low it had more torque but up top was pretty similar in performance to JB4 map 2.

    http://www.bimmerboost.com/images/im...1d131829-1.jpg
    Damn what octane were using ? And how do I get my hands on that map 6?

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    Click here to enlarge Originally Posted by pwrdbynel Click here to enlarge
    Damn what octane were using ? And how do I get my hands on that map 6?
    91 + a can of NOS octane booster. Works out to be 93 octane. Map 6 needs a lot more work on the low end fueling before its safe for customer testing but progress has been made since then, just haven't gotten back to the dyno yet. You would also need the CPS module to use it.

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    Click here to enlarge Originally Posted by Terry@BMS Click here to enlarge
    I dyno tested the S2+ on our stock intercooler.muffler automatic 135i a few weeks ago and did some back to back runs with JB4 map 2 and an under development map 6. Down low it had more torque but up top was pretty similar in performance to JB4 map 2.

    http://www.bimmerboost.com/images/im...1d131829-1.jpg
    Terry is running at this boost mapa6?

    thank you very much

  19. #19
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    Do you think COBB will be able to squeeze out anymore power with methanol injection?
    Click here to enlarge


  20. #20
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    Click here to enlarge Originally Posted by Gbreee90 Click here to enlarge
    Do you think COBB will be able to squeeze out anymore power with methanol injection?
    Sure, with more advance. The limits of stock turbo power are 440-450whp fully modified. We found that out in 2009. Click here to enlarge

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    Click here to enlarge Originally Posted by Terry@BMS Click here to enlarge
    Sure, with more advance. The limits of stock turbo power are 440-450whp fully modified. We found that out in 2009. Click here to enlarge
    I dont think my transmission wants to see anymore torque Click here to enlarge
    Click here to enlarge


  22. #22
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    Click here to enlarge Originally Posted by Terry@BMS Click here to enlarge
    Sure, with more advance. The limits of stock turbo power are 440-450whp fully modified. We found that out in 2009. Click here to enlarge
    What I hope for is gear dependent load targeting/boost control with ATR. I would want to max out the turbos in say 2nd gear and taper aggressively >6500 for the higher gears. Being outside of compressor efficiency isn't detrimentally impacting for the .3 seconds you wind out a gear in 2nd past 6500, but could be damaging with high EGTs and cylinder pressure under sustained load.

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    I'm really interested in seeing how cobb stage 2 feels on my car. Only 3 more days. I liked JBR, but I'm a pump gas guy and this seems to be a better option for me.

  24. #24
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    Its crazy how many people are switching to COBB. Currently, JB4 is fine for me Click here to enlarge
    Click here to enlarge


  25. #25
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    agreed. My switch wasn't intentional. I sold my JB4 thinking I was trading in my car, and got a $#@! offer so just decided to keep it. Figured I give this a whirl and see how it goes.

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