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  1. #1
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    na foo - 11/09/13 - Track Night

    Click here to enlarge

    My car's not running like it used to. The only difference between these runs and the 118mph runs were the NGK spark plugs. I'm thinking maybe I didn't gap them perfectly? How close to .22 do I need to be?

    Here are the logs:

    http://www.datazap.me/u/nafoo/110913-drag-racing-1

    http://www.datazap.me/u/nafoo/110913-drag-racing-2

    http://www.datazap.me/u/nafoo/110913-drag-racing-3

    http://www.datazap.me/u/nafoo/110913-drag-racing-4

    http://www.datazap.me/u/nafoo/110913-drag-racing-5

    I'm getting a lot of corrections in 3rd and 4th.
    2010 e92 M3 Jet Black | DCT | ESS Tuned | Akrapovic Slip-on | Challenge X-pipe | AFE Intake | 18" Volk TE37SL | KW V3 Coilovers | RPI Scoops | Under Drive Pulley

    2007 e92 Mont. Blue 335i | 6MT | COBB Tuned | Quaife 3.46 LSD | Helix FMIC | AA DPs | HKS Exhaust | DCI | Stett CP w/ Forged DVs | KWv2 Coilovers | UUC Sway Bars & SSK | HPF Stg 2 Clutch | HFS-4 | M3 Suspension Bits | DEFIVfab Diff Lockdown Kit | Stoptech Trophy BBK

  2. #2
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    you have a boost leak, vac or turbo issue. I don't like your tuning... who did it? You have logs of the faster traps?

  3. #3
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    Click here to enlarge Originally Posted by JoshBoody Click here to enlarge
    you have a boost leak, vac or turbo issue. I don't like your tuning... who did it? You have logs of the faster traps?
    I get a boost leak code once in a while in high rpms in 4th or 5th gear. Maybe my DV spring is weakening?

    I don't have logs from the last time, but here are the slips: http://www.bimmerboost.com/showthrea...Racing-Results

    Click here to enlarge
    2010 e92 M3 Jet Black | DCT | ESS Tuned | Akrapovic Slip-on | Challenge X-pipe | AFE Intake | 18" Volk TE37SL | KW V3 Coilovers | RPI Scoops | Under Drive Pulley

    2007 e92 Mont. Blue 335i | 6MT | COBB Tuned | Quaife 3.46 LSD | Helix FMIC | AA DPs | HKS Exhaust | DCI | Stett CP w/ Forged DVs | KWv2 Coilovers | UUC Sway Bars & SSK | HPF Stg 2 Clutch | HFS-4 | M3 Suspension Bits | DEFIVfab Diff Lockdown Kit | Stoptech Trophy BBK

  4. #4
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    5 miles per hour just from plugs?

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

  5. #5
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    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    5 miles per hour just from plugs?
    It looks like I'm losing top end power. Maybe my ethanol mix isn't up to par?

    I need the experts in here! @dzenno@PTF
    2010 e92 M3 Jet Black | DCT | ESS Tuned | Akrapovic Slip-on | Challenge X-pipe | AFE Intake | 18" Volk TE37SL | KW V3 Coilovers | RPI Scoops | Under Drive Pulley

    2007 e92 Mont. Blue 335i | 6MT | COBB Tuned | Quaife 3.46 LSD | Helix FMIC | AA DPs | HKS Exhaust | DCI | Stett CP w/ Forged DVs | KWv2 Coilovers | UUC Sway Bars & SSK | HPF Stg 2 Clutch | HFS-4 | M3 Suspension Bits | DEFIVfab Diff Lockdown Kit | Stoptech Trophy BBK

  6. #6
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    2010 e92 M3 Jet Black | DCT | ESS Tuned | Akrapovic Slip-on | Challenge X-pipe | AFE Intake | 18" Volk TE37SL | KW V3 Coilovers | RPI Scoops | Under Drive Pulley

    2007 e92 Mont. Blue 335i | 6MT | COBB Tuned | Quaife 3.46 LSD | Helix FMIC | AA DPs | HKS Exhaust | DCI | Stett CP w/ Forged DVs | KWv2 Coilovers | UUC Sway Bars & SSK | HPF Stg 2 Clutch | HFS-4 | M3 Suspension Bits | DEFIVfab Diff Lockdown Kit | Stoptech Trophy BBK

  7. #7
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    I gapped my plugs right on .22 and the car runs awesome, definitely better than before with the Bosch plugs, I was getting rough starts, no misfires, but rough starts, and car is way better now. I read a lot of feedback on the plugs when I did mine and it seemed most people had issues with just not gapping down enough, .22 is pretty much nothing, but it's what our cars like.
    2009 335i coupe back to stock...for now

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  8. #8
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    Took another look and boost control is fine... I misread the maxed out tuning. 5mph is a bunch to be IAT, timing related. Should feel any miss due to plugs. I think its just the tuning and weather. Before you were about 1psi higher, better timing, and lower temps. Again I don't like the maxed out tuning... have PTF review and maybe revise. I can't imagine how this would look during the summer.

  9. #9
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    Click here to enlarge Originally Posted by JoshBoody Click here to enlarge
    Took another look and boost control is fine... I misread the maxed out tuning. 5mph is a bunch to be IAT, timing related. Should feel any miss due to plugs. I think its just the tuning and weather. Before you were about 1psi higher, better timing, and lower temps. Again I don't like the maxed out tuning... have PTF review and maybe revise. I can't imagine how this would look during the summer.
    Hmm, maybe some of the maps got mixed around while I was swapping COBBs and then switching to COBB V3.

    It's maxed out tuning because we were making a "race" map since I rarely get to get on it, except at the track.
    2010 e92 M3 Jet Black | DCT | ESS Tuned | Akrapovic Slip-on | Challenge X-pipe | AFE Intake | 18" Volk TE37SL | KW V3 Coilovers | RPI Scoops | Under Drive Pulley

    2007 e92 Mont. Blue 335i | 6MT | COBB Tuned | Quaife 3.46 LSD | Helix FMIC | AA DPs | HKS Exhaust | DCI | Stett CP w/ Forged DVs | KWv2 Coilovers | UUC Sway Bars & SSK | HPF Stg 2 Clutch | HFS-4 | M3 Suspension Bits | DEFIVfab Diff Lockdown Kit | Stoptech Trophy BBK

  10. #10
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    Hi @nafoo, something is definitely off. If all that changed is plugs I'd look there first. Drop me an email, easier to discuss that way.

    @JoshBoody, tuning is nowhere near maxed in any sense. WGDC is in the 70s as opposed to low 80s that I've seen some other tuners allow. Boost hits 20psi tapering to 16 at 6k rpm. @nafoo also had HFS-4 meth installed back then and IATs were not a concern. His tune was built a long time ago.
    Click here to enlarge

  11. #11
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    .022 i hope u meant not .22 woah so gap such room
    - Proven Power Tampa built 6466 ST -
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  12. #12
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    1 out of 1 members liked this post. Yes Reputation No
    Click here to enlarge Originally Posted by Ak335i Click here to enlarge
    .022 i hope u meant not .22 woah so gap such room
    +1
    2008 e92 335i: JB4 G5 ISO/BMS back end flash, fbo, e85, inlets, Rb turbos, level 10 valve body + converter, water/methanol.....and a lot more....

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