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Thread: First Time Running 1/4 Mile - COBB Race Gas Map

              
   
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    First Time Running 1/4 Mile - COBB Race Gas Map

    I ran my car for the first time ever on the strip yesterday at FIXXFEST. For those of you that don't know, it is a German car event held every year in Bradenton, FL. It is about 90% VW amd Audi but there are a good number of BMW's that show every year.


    I ran 5 times with my best time being my first. The slip looked like this:


    R/T: .635
    60': 2.242
    330: 5.657
    1/8: 8.398
    MPH: 91.62
    1000: 10.745
    1/4: 12.708
    MPH: 114.51


    My highest trap of the day was my last run at 115.06. I was very pleased with the consistency of the Cobb tune. 1/4 mile times ranged from 12.708 to 12.904 and traps ranged from 113.62 to 115.06.


    Mods are DCI, ETS 5" FMIC, AR DP's, and Dinan axle back exhaust. Tune was Cobb race gas map running VPR MS109 on stock turbos and full weight on street tires.


    I was supposed to get protuned for E50 by PTF this past week but @dzenno@ProTUNING Freaks looked at my logs and said my LPFP needed replaced. After my first run, I got a 2A2D code which I found to be a low pressure fuel code. I will be replacing the LPFP and getting protuned by PTF over the next week or two and hitting the strip again.


    In all honesty, I expected to be in the low 12's but I obviously need to launch better to have a shot at that. I'm assuming the LPFP issue isn't helping times either. Thoughts?
    Last edited by JStang; 11-18-2012 at 08:37 PM.
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    Work on that 60' time.

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    Great run! chop just a 2.0 60 and you should hit 12.4 or so!! Click here to enlarge
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    6MT or AT?
    [02/07 E92 335i 6MT] - Under Construction
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    01/07 E92 335i 6MT] - Cobb S2+ PTF-protune | Stett CAI | ETS 5" FMIC | AR DP | AE Exhaust - Gone

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    AT which make my 60 that much more pathetic Click here to enlarge
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    Yeah, just get your launch down and you should see mid to low 12's.
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    thats really not bad for a first run. and that 60 should be easy to get a little better and a little better is all you need ..

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    What was the temperature and DA?

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    Temp was,around 75 not sure of DA.
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    Post the slip please.

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    Click here to enlarge Originally Posted by Sticky Click here to enlarge
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    Post the slip please.
    Will post up tonight. Is my post not believable? I wouldn't lie about those 60' times!
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    Click here to enlarge Originally Posted by JStang Click here to enlarge
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    Will post up tonight. Is my post not believable? I wouldn't lie about those 60' times!
    It's definitely believable just prefer to have the actual slip over text.

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    No prob. Will post up tonight. I have 5 of them.
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    Yeah your 60ft definitely needs work (so do I lol). Were you launching in 1st or 2nd gear? Also did you have traction control fully off (hold for 5 seconds)?

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    Launching in 2nd at about 2,500 RPM's (brake boost). Traction control was fully disabled.
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    the track $#@!ing sucked. I also ran and coulnt get better then a 2.0 60'

    I was launching in 2nd, and would spin the entire gear
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    Click here to enlarge Originally Posted by E90SoFlo Click here to enlarge
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    the track $#@!ing sucked. I also ran and coulnt get better then a 2.0 60'

    I was launching in 2nd, and would spin the entire gear
    So how did you do?

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    Click here to enlarge Originally Posted by RnmEvo9 Click here to enlarge
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    So how did you do?
    I was having misfires all day. I knew it was going to be a problem, but couldn't get coilpacks in fast enough.
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    Click here to enlarge Originally Posted by JStang Click here to enlarge
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    I was supposed to get protuned for E50 by PTF this past week but @dzenno@ProTUNING Freaks looked at my logs and said my LPFP needed replaced. After my first run, I got a 2A2D code which I found to be a low pressure fuel code. I will be replacing the LPFP and getting protuned by PTF over the next week or two and hitting the strip again. In all honesty, I expected to be in the low 12's but I obviously need to launch better to have a shot at that. I'm assuming the LPFP issue isn't helping times either. Thoughts?
    Ethanol destroys the stock LPFP. It's at 72psi at stock boost, and barely able to keep up with a stage 2 tune, which is why we all get 2AAF codes. With ethanol, you run lean, so the LPFP already maxed out is put under even more stress.

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    Click here to enlarge Originally Posted by JStang Click here to enlarge
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    R/T: .635
    60': 2.242
    330: 5.657
    1/8: 8.398
    MPH: 91.62
    1000: 10.745
    1/4: 12.708
    MPH: 114.51
    1. get nittos
    2. try and get runs in like 75 degree weather in order to establish a baseline. I'm guessing that these runs were in colder weather.

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    Temps were around 75 degrees.
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    Click here to enlarge Originally Posted by Turkeybaster115 Click here to enlarge
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    Ethanol destroys the stock LPFP. It's at 72psi at stock boost, and barely able to keep up with a stage 2 tune, which is why we all get 2AAF codes. With ethanol, you run lean, so the LPFP already maxed out is put under even more stress.
    Maybe but I was getting 2AAF codes before I started running ethanol.
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    As requested by @Sticky, here are the slips. On the second run, they entered car number 91 instead of 141.

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    Click here to enlarge
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    Click here to enlarge Originally Posted by Turkeybaster115 Click here to enlarge
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    Ethanol destroys the stock LPFP. It's at 72psi at stock boost, and barely able to keep up with a stage 2 tune, which is why we all get 2AAF codes. With ethanol, you run lean, so the LPFP already maxed out is put under even more stress.
    I honestly do not believe Ethanol is harming our LPFP, yet. Its likely to cause damage over an extended period of time, but i believe most of the issues we are seeing are caused by;
    1. OEM pumps that are already aged and beginning to degrade.
    2. The in-tank fuel filter, aka Fuel pump Sock, getting clogged with all the $#@! that the ethanol is dislodging from the tank.

    I dont see any reason why an OEM LPFP shouldn't be able to support ~E50.
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    Click here to enlarge Originally Posted by JStang Click here to enlarge
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    As requested by @Sticky , here are the slips. On the second run, they entered car number 91 instead of 141.

    http://www.germanboost.com/images/im...31641918-1.jpg
    thanks.

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