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  1. #1
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    Cobb stage 0, 1, and 2+ "60-130"

    Note that these aren't vbox 60-130s but based off of the logs time stamps, so they are only valid comparisons between the runs as they were all done on the same day and same car on the same road.

    Car set up
    08 335i full weight
    AFE drop in filter
    Helix FMIC
    AR DPs

    93 shell gas
    45 degrees
    Winds were gusting from 20-30 mph over open farm fields.

    I started in 3rd around 50mph and shifted at 6k to 4th to keep the engine in its powerband. I didnt shift into 5th and had to go north of 6.5k to hit 130mph which serious hurt the times. After seeing the horrible times, I broke the times down by 10mph and see that I really suck wind in the last 10 mph.

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    Is that stage 2+ aggressive on 93 octane? Guessing you have an auto. Manuals have no problem hitting 130 mph in 4th.

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    I have a manual, it was stage 2+ agressive. I can hit 130 at around 6500, but the engine is not at its peak power (going from 120 - 130mph - 6100 to 6500ish rpms) when its under the heaviest load from drag.

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    if just stage 2plus could hold 18 and taper to 16 to redline....
    07 335i AT - MOTIV 750 - MHD BMS E85 - BMS PI - JB4G5 - Okada Coils - NGK 5992 Plugs - Helix IC - Stett CP - Custom midpipes with 100 HJS Cats - Bastuck Quad - PSS10 - QUAIFE LSD - BMS OCC - Forge DVs - AR OC - ALCON BBK - M3 Chassi - Dinan CP - Velocity M rear Toe arms - Advan RZ-DF - LUX H8 - Level 10 AT upgrade
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    Click here to enlarge Originally Posted by mithiral67 Click here to enlarge
    I have a manual, it was stage 2+ agressive. I can hit 130 at around 6500, but the engine is not at its peak power (going from 120 - 130mph - 6100 to 6500ish rpms) when its under the heaviest load from drag.
    Just out of curiosity, did you bog any of the shifts?

    Also you are starting the run in 3rd gear and ending at the top of 4th, right?

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    I am about to review all the logs, I will let you know about any bogs.

    Yep, started in 3rd, shifted to 4th around 6k and then redline 4th gear.

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    I can bet you're losing a ton of time in that 3-4 shift...when you're doing 60-130s try to start at about 48mph so you don't lose time building up traction in these cold temps...then try to make a very fast shift from 3rd to 4th as the needle hits 6100rpm...this is on full weight right? Make sure you're not going uphill either as that also hurts times...

    FWIW, my best was a 10.4 on race gas and meth without flat foot shifting on stock turbos and full weight on level ground with 20psi down to 16psi and stock timing on procede back in the day but I didn't really try as hard to dial it in as I have recently...not an easy task on stock turbos that's for sure but you should definitely be able to squeeze out more than that on stage2

    if you're serious about it I'd definitely consider wiring in the wotbox but you do have to mess with DME wiring though...

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    Lol going off vehicle speed and time on my Cobb logs my 60-130 is 9.4 seconds on stage 2 race. Based on that info I'd get assraped by these 8.x second procede and jb4 cars like SIKH and hotrod. I need to do some real vbox pulls for confirmation.

    I just don't get it.

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    I never track my car and I am not going for records, so I am good without the wotbox for now. Heck, cobb might add for free.

    I tried to shift quickly, whats a good way to look at the logs to see how long it takes me to shift, time from boost going down to back up, timing, load?

    Yea, I was expecting less time, but it was windy as $#@!.

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    I go from fuel mode 2 to 6. Whats that mean?

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    Did you flatline timing? Fuel mode 6 is a failsafe mode that means the ecu thinks the egts are too hot for the cats. I had that mode deleted on the stage 2 race map I am currently running.

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    Click here to enlarge Originally Posted by themyst Click here to enlarge
    Lol going off vehicle speed and time on my Cobb logs my 60-130 is 9.4 seconds on stage 2 race. Based on that info I'd get assraped by these 8.x second procede and jb4 cars like SIKH and hotrod. I need to do some real vbox pulls for confirmation.

    I just don't get it.
    Getting a really good 60-130 takes a ton of practice, finding a legit as maxed out decline slope as possible (less than 3% grade) and in a lot of cases not having a lot of weight on the car (seats, exhaust off, lightweight batteries, hood, trunk, wheels/tires, etc.)...just like any form of racing...unless you've tried to tackle all of these don't expect records or anything close as it'll be basically impossible...strong headwind obviously also doesn't help at all but that you can't really "dial in" Click here to enlarge

    Click here to enlarge Originally Posted by mithiral67 Click here to enlarge
    I never track my car and I am not going for records, so I am good without the wotbox for now. Heck, cobb might add for free.

    I tried to shift quickly, whats a good way to look at the logs to see how long it takes me to shift, time from boost going down to back up, timing, load?

    Yea, I was expecting less time, but it was windy as $#@!.
    You could probably look at the accelerator pedal graph if you're doing full lift shifts...with the wotbox you'd have to look at the clutch signal OR look at gear if it is logged...i like the JB4 logging for that as it shows me the gear shift...

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    Here are my logs. My timings are taking some serious dumps. Never had this issue before, usually my timing is great.

    Click here to enlarge

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    from the logs, my time off the pedal is about 1/4 a second

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    Wow that is some serious timing drop activity. Bad gas maybe?

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    I only get it from 2 shell locations, but yea, that doesnt look good at all.

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    The stage 1 logs look odd as well. Boost was off on the second run accross he board.
    Attached Images Attached Images  

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    I wouldn't put any weight on comparing logged versus vbox times. Keeping as reference for future tuning, mods would be great though. I've thought about this also, but I just don't have the balls to do 130... other day I did when racing, but that's adrenalin keeping me from slowing down.

    timing doesn't look great, but 4th gear timing will always be fairly poor... especially if there's a head wind.

    great data!

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    Click here to enlarge Originally Posted by JoshBoody Click here to enlarge
    I wouldn't put any weight on comparing logged versus vbox times. Keeping as reference for future tuning, mods would be great though. I've thought about this also, but I just don't have the balls to do 130... other day I did when racing, but that's adrenalin keeping me from slowing down.

    timing doesn't look great, but 4th gear timing will always be fairly poor... especially if there's a head wind.

    great data!
    Click here to enlarge why would timing be bad with head wind?

    it always just comes down to enjoying the cars through racing, otherwise what's the point of touching them at all? maybe i misunderstood what you said

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    Click here to enlarge Originally Posted by mithiral67 Click here to enlarge
    The stage 1 logs look odd as well. Boost was off on the second run accross he board.
    Looks like you flatlined timing on that first graph. Maybe I'm not alone with this issue....

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    Btw OP please send your logs to rob at Cobb with the fuel mode 6. The more people who report it the faster he may want to address it.

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    I just sent off to rob.

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    Mithiral you are barely peaking at 15 psi and tapering down to 8 and lots of timing is getting pulled out mid of 4th gear. What are your mods? Do you have iat in your logs, that will help.
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    Click here to enlarge

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    IATs were the following

    Stage 2+
    Run 1 63 - 71F
    Run 2 70 - 77F

    Stage 1
    Run 1 90 - 102F
    Run 2 88 - 94F

    Mods
    AFE drop in filter
    Helix FMIC
    AR DPs
    Forge DVs
    ER Chargepipe
    Scoops

  25. #25
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    Click here to enlarge Originally Posted by dzenno Click here to enlarge
    Click here to enlarge why would timing be bad with head wind?

    it always just comes down to enjoying the cars through racing, otherwise what's the point of touching them at all? maybe i misunderstood what you said
    I was referring to running a datalog at 130mph... i shake when thinking about the consequences of the popo catching me. I do 100 often for logging. When racing its a different story and you're in the moment not thinking about all the potential scenarios. Love getting on it

    head wind adds load... like running up hill or taller gear. slower engine acceleration, more cylinder fill... generally higher torque with the same timing curve.

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