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  1. #126
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    Click here to enlarge Originally Posted by neilvosko Click here to enlarge
    is there any issue upping the scalar for 30% E85 in the Stage 2+ aggressive map and add E85 to clean up timing and then when just driving casually sometimes not add any E85 on the ST2+ map but leave the e30 scalar with straight 93 octane?
    You don't need 30% to clean the timing up on stage2+ agg on 93 octane. Just add in 10%, and don;t change anything. Your DME can't easily take care of that much E85, and you won;t have to deal with scalars... it's just not worth it.

    on another note, are your plugs good? coils ? I started getting timing drops out of nowhere some time back that were completely cleaned up by new plugs.
    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

  2. #127
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    i just changed all my plugs and coils, but getting constant drops of timing on cyl 4, figure have to replace the injectror.

    no big deal, i had just replaced cyl 1 injector and coded it myself.

  3. #128
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    I actually did what you suggested. I was getting a lot of timing drops on 93 octane with my PTF Protune. I added a little E85 maybe a gallon but the timing drops were still noticeable. Then I aksed Jake who modified my scalars for my PTF Protune for E20 and E30 as another 2-3 gallons of E85 made the timing drops go away. That was earlier last Fall. More recently I went back to just 93 and my normal E10 PTF Protune as I heard flushing the system with E10 helps to remove "junk" on the fuel filter caused by too much E85. Now I have no timing drops back on E10. So now I'm suspicious that I may had a bad tank of E10 93 last Fall. Go figure.

  4. #129
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    Click here to enlarge Originally Posted by Jeffman Click here to enlarge
    I actually did what you suggested. I was getting a lot of timing drops on 93 octane with my PTF Protune. I added a little E85 maybe a gallon but the timing drops were still noticeable. Then I aksed Jake who modified my scalars for my PTF Protune for E20 and E30 as another 2-3 gallons of E85 made the timing drops go away. That was earlier last Fall. More recently I went back to just 93 and my normal E10 PTF Protune as I heard flushing the system with E10 helps to remove "junk" on the fuel filter caused by too much E85. Now I have no timing drops back on E10. So now I'm suspicious that I may had a bad tank of E10 93 last Fall. Go figure.
    Didn't understand this. Some questions
    Is it a 135 or 335? Tank size
    Did you have 2 maps done by PTF? What maps
    335xi Sedan 6AT || Weather(45-60°F)
    -PROcede Rev. 2.5 ~ v5 (3/17 maps) / JB4 (8/21 maps) / COBB (Stg2+FMIC LT Agressive maps)
    †Procede Map2(UT 45 - IGN 40) Aggression Target 2.0 (93 Octane) || 0-60 in 4.0sec
    †Cobb E30 LT (35% Ethanol/65% 93 Octane) || 0-60 in 3.9sec
    AR Design Catless DP || BMS DCI + OCC || ETS 5 FMIC || Alpina B3 Trans Flash || 235/265 19" Michelin PSS

  5. #130
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    Click here to enlarge Originally Posted by AltecBX Click here to enlarge
    Didn't understand this. Some questions
    Is it a 135 or 335? Tank size
    Did you have 2 maps done by PTF? What maps
    Tank size doesn't matter at all. It sounds like he has a light E85 blend map (E20/E30) and then a Pump Gas Map for 93 octane (E10). This shouldn't be anything special this is the common setup that most people who get COBB PROtunes have: 1 pump gas & 1 E85-blend tune
    COBB AP ProTune by Bren of ///Bren Tuning
    Akrapovic DP | Helix FMIC | Alpina TCM Flash | Walbro 450LPH Fuel Pump


    "The moment money becomes your motivation, you are immediately not as good as someone who is motivated by passion and internal will." -A. Senna

  6. #131
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    Click here to enlarge Originally Posted by benzy89 Click here to enlarge
    Tank size doesn't matter at all. It sounds like he has a light E85 blend map (E20/E30) and then a Pump Gas Map for 93 octane (E10). This shouldn't be anything special this is the common setup that most people who get COBB PROtunes have: 1 pump gas & 1 E85-blend tune
    Got it just re-read. I was reading it wrong thinking the E10 was a special map since he reference 93 before. But now that I read it again I see what he means E10=93. Just woke up Click here to enlarge

    But 3 gallons of E85 on a 14gal tank is different from 3gal on a 16gal tank. different ratios
    335xi Sedan 6AT || Weather(45-60°F)
    -PROcede Rev. 2.5 ~ v5 (3/17 maps) / JB4 (8/21 maps) / COBB (Stg2+FMIC LT Agressive maps)
    †Procede Map2(UT 45 - IGN 40) Aggression Target 2.0 (93 Octane) || 0-60 in 4.0sec
    †Cobb E30 LT (35% Ethanol/65% 93 Octane) || 0-60 in 3.9sec
    AR Design Catless DP || BMS DCI + OCC || ETS 5 FMIC || Alpina B3 Trans Flash || 235/265 19" Michelin PSS

  7. #132
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    Click here to enlarge Originally Posted by AltecBX Click here to enlarge
    But 3 gallons of E85 on a 14gal tank is different from 3gal on a 16gal tank. different ratios
    But he provided the ratios (E20/E30), so if it's that important just do the math. It's also people remember that E85 from a pump can vary in ethanol content anywhere between 70-85%. So if you're running your correctly mixed E85 map and seeing an abnormal amount of timing corrections, it's possible the E85 you pumped into your car isn't actually E85, but instead maybe E75 (made up value). So adding an extra gallon or two (depending on how strong of a mix you're running), should get your ethanol content where it should be.
    COBB AP ProTune by Bren of ///Bren Tuning
    Akrapovic DP | Helix FMIC | Alpina TCM Flash | Walbro 450LPH Fuel Pump


    "The moment money becomes your motivation, you are immediately not as good as someone who is motivated by passion and internal will." -A. Senna

  8. #133
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    Click here to enlarge Originally Posted by benzy89 Click here to enlarge
    But he provided the ratios (E20/E30),
    Ya that ratio is the ratio no matter the size of the tank.

  9. #134
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    Got it!

    So is his PTF map tuned to handle E20-E30(E20/E30)? That's where I think I a bit confused.
    335xi Sedan 6AT || Weather(45-60°F)
    -PROcede Rev. 2.5 ~ v5 (3/17 maps) / JB4 (8/21 maps) / COBB (Stg2+FMIC LT Agressive maps)
    †Procede Map2(UT 45 - IGN 40) Aggression Target 2.0 (93 Octane) || 0-60 in 4.0sec
    †Cobb E30 LT (35% Ethanol/65% 93 Octane) || 0-60 in 3.9sec
    AR Design Catless DP || BMS DCI + OCC || ETS 5 FMIC || Alpina B3 Trans Flash || 235/265 19" Michelin PSS

  10. #135
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    Sounds like it -- Basically a PROtuned version of COBB's E30 OTS Map
    COBB AP ProTune by Bren of ///Bren Tuning
    Akrapovic DP | Helix FMIC | Alpina TCM Flash | Walbro 450LPH Fuel Pump


    "The moment money becomes your motivation, you are immediately not as good as someone who is motivated by passion and internal will." -A. Senna

  11. #136
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    If that's the case, now I understand. Thanks
    335xi Sedan 6AT || Weather(45-60°F)
    -PROcede Rev. 2.5 ~ v5 (3/17 maps) / JB4 (8/21 maps) / COBB (Stg2+FMIC LT Agressive maps)
    †Procede Map2(UT 45 - IGN 40) Aggression Target 2.0 (93 Octane) || 0-60 in 4.0sec
    †Cobb E30 LT (35% Ethanol/65% 93 Octane) || 0-60 in 3.9sec
    AR Design Catless DP || BMS DCI + OCC || ETS 5 FMIC || Alpina B3 Trans Flash || 235/265 19" Michelin PSS

  12. #137
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    Sorry for the confusion. I have a 335xi. I have PTF maps for E10, E20 and E30. The only difference between the E20 and E30, compared to the E10, are the fuel scalars. Timing and power are about the same for all of them. My E30 is not like the Cobb E30 beta - Jake could advance the timing curves much more for more power, but I'm fine with the current level and just want to be sure the engine runs smoothly with no timing drops. I hope this is clear. Please let me know if you have any further questions.

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