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  1. #1
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    3 out of 3 members liked this post. Reputation: Yes | No

    Baseline + Cobb stage 1 dyno

    Yesterday I hit up the dyno yesterday to get a baseline before I start adding parts. This was done on a completely stock 2009 AT e90 minus secondary cats. I first dynoed with stage 1 v402 aggressive then uninstalled the cobb and did a baseline pull w/o taking the car off the dyno. I was hoping to get more than 30/50 with the stage 1 cobb.

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    Your graph is set for SAE correction. Do you have the STD graph? Chart seems a bit noisy up top starting at 5k. When was the last time you changed spark plugs?

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    I don't have the std graph. The car only has 23K on it still running the original plugs.

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    Get some new plugs in there, they usually need to get swapped every 20-25k
    COBB AP ProTune by Bren of ///Bren Tuning
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    Click here to enlarge Originally Posted by benzy89 Click here to enlarge
    Get some new plugs in there, they usually need to get swapped every 20-25k
    +1 especially when you are running a tune
    SOLD --'07 E90 335i, PTF COBB E50, HFS4, ER CP, ETS 7", AA DP, Vishnu Exhaust, DCI, ACT, Nitto Nt555

    '10 E92 335i M, 6MT COBB v3, ER IC, ER CP, VRSF DP, Fuel-it st2
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    At least it's clear that dyno reads low.

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    I've only been running a tune for about 3K miles. Probably less.

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    Click here to enlarge Originally Posted by zeenon53 Click here to enlarge
    I've only been running a tune for about 3K miles. Probably less.
    True, but it's been running on those plugs for 23K.

    I would log and post it here just for everyone to take a quick look. Doesn't hurt Click here to enlarge
    SOLD --'07 E90 335i, PTF COBB E50, HFS4, ER CP, ETS 7", AA DP, Vishnu Exhaust, DCI, ACT, Nitto Nt555

    '10 E92 335i M, 6MT COBB v3, ER IC, ER CP, VRSF DP, Fuel-it st2
    installing soon: Mfactory LSD, , powerflex subrframe bushings

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    Guys his plugs aren't bad. I had 32k miles on my plugs running far more aggressive than this guy and they looked perfect when I pulled them without a single misfiring.

    Considering he has only had 3k miles tuned I seriously doubt that is the reason why his car did poorly on the dyno.

    OP, if you can please post some datalogs of your car. Start at 3000 RPM and wind it out to redline and get a little bit of 4th gear.

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    OP edited to insert image inline to resize.

    Graph seems choppy.
    Stage 2 or 2.5 E9X M3 S65 V8 supercharger kit for sale: http://www.boostaddict.com/showthrea...r-kit-for-sale

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    You lost torque too quickly at 5k. A log would help, im thinking either heatsoak, minor boost leak or $#@! gas.
    E92 AT. COBB S2+ , FBOs.

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    Heatsoak could be an issue. It was a really small fan blowing on the front of the car.

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    I just did some logs of the car, but for the life of me I can't figure out how to post them. I can view them in excel and tried to graph with Zasquatch's technique but can't.

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    Click here to enlarge Originally Posted by zeenon53 Click here to enlarge
    I just did some logs of the car, but for the life of me I can't figure out how to post them. I can view them in excel and tried to graph with Zasquatch's technique but can't.
    just add .txt to the name of the file after .csv and upload it.

    T

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    Click here to enlarge Originally Posted by ///Mangler Click here to enlarge
    just add .txt to the name of the file after .csv and upload it.

    T
    Ahhh...thank you so much!
    Turns out it is too big though.

    I got the graph working. Cylinder 4 is dropping timing a little.
    Attached Images Attached Images  

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    when you log try to do a complete pull. Go 1500 rpm 3rd gear. click the AP start logging , go WOT till redline , shift to 4th WOT for 500 rpm or so (to see post shift timing) stop the logging. Post as attachement.
    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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    Its so hard to read this graph, too many blue pale lines made me dizzy.

    Remove the data following the end of the run, on decelaration when still logging.
    E92 AT. COBB S2+ , FBOs.

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    I was still on the throttle for a part of 4th gear. Anything I should eliminate from the graph?

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