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  1. #1
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    JB4 Map2 on 93 octane wo/dp???

    Is it safe for engine longevity & staying out of limp mode to run map 2 with 93 octane gas on a car with the BMW extra oil/water cooling radiators but no downpipes?
    Kevin
    2011 335is 7DCT/JB4 G5-ISO BMS Flash
    2013 135is 6MT - JB4 G5-ISO
    FF Cobra Mk-IV work in progress

  2. #2
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    You'll pull more timing on Map 2 than Map 1 and likely run worse, all else equal. Stay away from it on a stock car.

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    Just go with map 5
    Click here to enlarge


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    Before I got meth, I ran Map 2 + DCI on 94 octane ... seemed to log clean enough, and certainly performed a lot better than map 1.
    ~

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    1 out of 1 members liked this post. Yes Reputation No
    I've been running Map 2 with just a DCI and it seems to be running strong, but temps around here are getting to 50 degrees and lower so that could be a reason.

  6. #6
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    Have a post from Terry he says I would be better off with map 5
    Kevin
    2011 335is 7DCT/JB4 G5-ISO BMS Flash
    2013 135is 6MT - JB4 G5-ISO
    FF Cobra Mk-IV work in progress

  7. #7
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    Have it set on Map 5 with a 6200 shift light. I plugged the exhaust flapper valve connection back together & am using the JB4 to hold it open. Everything else in the JB4 is on default.

    How long does it take for the JB4 to acclimate to the car & do I need to do anything special when I am driving during the setup period?
    Kevin
    2011 335is 7DCT/JB4 G5-ISO BMS Flash
    2013 135is 6MT - JB4 G5-ISO
    FF Cobra Mk-IV work in progress

  8. #8
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    1 out of 1 members liked this post. Yes Reputation No
    That you have a 335is changes things as you're already running a partial flash tune. You may be able to get away with map 2 as you'll be forced in to a lower advance curve by default from the factory. Just email in a CSV log and we can check it out for you.

  9. #9
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    OK will do
    Kevin
    2011 335is 7DCT/JB4 G5-ISO BMS Flash
    2013 135is 6MT - JB4 G5-ISO
    FF Cobra Mk-IV work in progress

  10. #10
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    Click here to enlarge Originally Posted by BEAR-AvHistory Click here to enlarge
    OK will do
    Did you send it in?

  11. #11
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    I have a question that falls in line with this, is it bad to run Map 2 if I have intake and straight pipe exhaust but still have the stock DPs on?
    Click here to enlarge
    BMS JB4 Map5, Eibach Pro-Kit Springs

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    Click here to enlarge Originally Posted by baylor1er Click here to enlarge
    I have a question that falls in line with this, is it bad to run Map 2 if I have intake and straight pipe exhaust but still have the stock DPs on?
    Don't know, @Terry@BMS

  13. #13
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    Click here to enlarge Originally Posted by baylor1er Click here to enlarge
    I have a question that falls in line with this, is it bad to run Map 2 if I have intake and straight pipe exhaust but still have the stock DPs on?
    The stock Dp's are the limiting factor. I guess it also depends on your climate as some have gotten away with it. I tried it, and my car didn't like it at all. I would stick to map 1 or 5.

  14. #14
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    Click here to enlarge Originally Posted by baylor1er Click here to enlarge
    I have a question that falls in line with this, is it bad to run Map 2 if I have intake and straight pipe exhaust but still have the stock DPs on?
    With a 335is? It's probably fine but it would be worth looking at logs.

  15. #15
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    Yes Reputation No
    Click here to enlarge Originally Posted by Terry@BMS Click here to enlarge
    With a 335is? It's probably fine but it would be worth looking at logs.
    I drive a 135i. I'll try and do some logs over the next week or so.
    Click here to enlarge
    BMS JB4 Map5, Eibach Pro-Kit Springs

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