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Most power for E85 even 93? MHD, JB4
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03-22-2020, 05:35 PM | #1 |
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Most power for E85 even 93? MHD, JB4
Hello everyone before posting this I looked around everywhere to see if I didnt have to make this post but all the information I found was either old or for an n54, anyways I am finally getting my 2011 335i back on Tuesday after more then 1 year!
During that time an engine swap was done and my JB4 that I had on the car no longer works with it I need the different harness. A lot of people are telling my to move to MHD which was sort of my plan it was to do JB4 with MHD BEF but since I have none now I want to get one or the other, basically I want the one that will give me most power with 93 oct but mainly with e85, I cant run more then e30 mix yet so for you guys which do you think would be better? if you guys do recommend jb4 eventually I will get a bef, also my car has all the bolt ons for e85 stage 3 so we are good there. Thanks! sorry if this post is repetitive. Also selling my harness A JB4 since it does not fit anymore ($250) Last edited by MartinWake; 03-22-2020 at 06:14 PM.. |
03-23-2020, 12:08 PM | #2 |
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Anyone? that has had both?
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03-23-2020, 02:05 PM | #3 |
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Go for MHD and get a custom tune for the E30 mix or just use the E30 OTS map
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03-23-2020, 04:26 PM | #4 |
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I have had both for years. I have learned to hate the JB4. It isn't smooth and always seems like you need to tinker with it some more to get it just right. I have not ran MHD in a couple years but will be pulling the JB4 off and going MHD only again once I get my PS2 installed again.
I will say that, at least back when it was first launched, that I had worse timing with MHD installed, both as a BEF and as a standalone flash. JB4 only JB4 Cobb BEF JB4 MHD BEF MHD only custom tune
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03-23-2020, 04:30 PM | #5 |
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03-23-2020, 04:31 PM | #6 | |
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