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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Finally JB4 G5,e85 yes,no?



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      02-06-2013, 10:32 PM   #1
DJB335i
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Finally JB4 G5,e85 yes,no?

I just ordered the jb4 g5, I plan on buying the dps dci and fmic very soon but i will be away for a few weeks on vacation, I plan to install the jb4 friday when it arrives I got it from a member here brand new.

to get the the point my question is, can I run about 40% e85 mix on stock car with jb4 g5 . Also what map will I need to run I will be at about 6800-7200 feet da on my trip back home.Im usually at close to sea level, Everyone around their uses e85 on bigger injectors and fuel pump of course at a high elevation, but I was wondering if I can run it on a completely stock car other than a jb4 g5 thank you. I will also be dynoing the car next week so I will post dyno sheets.

thanks guys-Denise
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      02-06-2013, 10:41 PM   #2
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Use map 5. Start out with a bit lower 20% e85 then move up
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      02-06-2013, 10:46 PM   #3
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awesome thank you very much,some people make it so difficult to answer.Assuming your aware this is a completely stock car with a JB4 g5 and 20% E85? just to clarify. I appreciate it.
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      02-06-2013, 11:31 PM   #4
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awesome thank you very much,some people make it so difficult to answer.Assuming your aware this is a completely stock car with a JB4 g5 and 20% E85? just to clarify. I appreciate it.
start at 20-30% and use map 5.
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      02-06-2013, 11:54 PM   #5
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I really have done my research, I tend to only find answers for FBO cars ,I never can find literature on stock cars on E85.. assuming I have an ideal elevation and weather conditions what kind of power am I looking at with the JB4 G5 on 91 octane on map 1,and the G5 on 20-30% e85 on map 5? thanks again guys very helpful =)-Denise
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      02-07-2013, 12:05 AM   #6
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I really have done my research, I tend to only find answers for FBO cars ,I never can find literature on stock cars on E85.. assuming I have an ideal elevation and weather conditions what kind of power am I looking at with the JB4 G5 on 91 octane on map 1,and the G5 on 20-30% e85 on map 5? thanks again guys very helpful =)-Denise
Probably 365-380, really depend though.
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      02-07-2013, 12:14 AM   #7
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those are good numbers,well i just found some nice dps for 200 dollars do you think i can get 400 with those?
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      02-07-2013, 12:21 AM   #8
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those are good numbers,well i just found some nice dps for 200 dollars do you think i can get 400 with those?
Woah....what brand....cheap Dps usually do not fit at all. Get AR, BMS, VRSF EcT
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      02-07-2013, 12:27 AM   #9
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Quote:
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those are good numbers,well i just found some nice dps for 200 dollars do you think i can get 400 with those?
Define nice....
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      02-07-2013, 12:53 AM   #10
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Define nice....
ebay
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      02-07-2013, 01:06 AM   #11
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I run around 40% E85 in my car and my only mods are a JB4 G4 board and the BMS DCI. Car runs really strong and I even managed to run a 12.173 @ 109.49 mph on a 1.870 60' time my last time at the track (and the DA was around 1000'). I'm pretty sure the only thing hurting my trap speed was that my charge air temperature was getting up to around 180* F on the back half of the track.

As the others have said, start out with about a 20% mix and see how the car reacts. I'm sure it will be fine and you'll be able to put some more in it.
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      02-07-2013, 01:22 AM   #12
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Quote:
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Quote:
Originally Posted by Boosted1111 View Post
those are good numbers,well i just found some nice dps for 200 dollars do you think i can get 400 with those?
Woah....what brand....cheap Dps usually do not fit at all. Get AR, BMS, VRSF EcT
Vk motorwerks 2.5" dps are around $200 and they fit great. But they are only 2.5"
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      02-07-2013, 01:48 AM   #13
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I mean not the best quality but they are used from a friend.He had no issues, Im a young woman on a budget. Wow @ 12.1 thats amazing for a g4 with a DCI. (example)So when using E85 I wait until tank is almost empty and I add 6 gallons of 91 and 1-2 gallon of e85. and then run map 5. sounds simple.
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      02-07-2013, 02:20 AM   #14
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Quote:
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I mean not the best quality but they are used from a friend.He had no issues, Im a young woman on a budget. Wow @ 12.1 thats amazing for a g4 with a DCI. (example)So when using E85 I wait until tank is almost empty and I add 6 gallons of 91 and 1-2 gallon of e85. and then run map 5. sounds simple.
I run the tank down until it says 20-30 miles and use the table below I made.....it is on my notepad on my phone and iPad lol!!


E85 mix ratios

Gas tank capacity: 15.9 gal

15 gal fill

30%. 4.5/10.5
35% 5.25/9.75
40% 6/9
45% 6.75/8.25
50% 7.5/7.5
55% 8.25/6.75
60% 9/6
65% 9.75/5.25
70% 10.5/4.5
75% 11.25/3.75

14 gal fill:

30% 4.2/9.8
35% 5/9
40% 5.6/8.4
45% 6.3/7.7
50% 7/7
55% 7.7/6.3
60% 8.4/5.6
65% 9.1/4.9
70% 9.8/4.2
75% 10.5/3.5
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      02-07-2013, 03:07 AM   #15
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wow awesome thanks so much I will definitely use this, I suppose Ill start with 30% and do a few light pulls see how the car acts. I freaking love BMW 335i so much Ive had 10 second cars and something about this car I am in love with so happy I bought one.
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      02-07-2013, 03:08 AM   #16
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And I am not talking about fast and furious 10 second cars I mean real ones lol at high elevation! I really appreciate all of your help. BMW
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      02-07-2013, 03:17 AM   #17
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wow awesome thanks so much I will definitely use this, I suppose Ill start with 30% and do a few light pulls see how the car acts. I freaking love BMW 335i so much Ive had 10 second cars and something about this car I am in love with so happy I bought one.
you can make a 335i a 10 second car
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      02-07-2013, 09:24 AM   #18
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wow awesome thanks so much I will definitely use this, I suppose Ill start with 30% and do a few light pulls see how the car acts. I freaking love BMW 335i so much Ive had 10 second cars and something about this car I am in love with so happy I bought one.
25-30% is a good starting point.

Make sure you update to the latest JB4 firmware and make sure you are running the G5 ISO.

Mike
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      02-07-2013, 11:30 AM   #19
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I would go for 30 and set the global boost cap to 16 or so since you are at such high altitude. I have run higher at altitude and while its fun, the turbos are really really working.
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      02-07-2013, 12:57 PM   #20
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those are good numbers,well i just found some nice dps for 200 dollars do you think i can get 400 with those?
Pipes are pipes some are 2.5 others are 3.0 part way to the factory connection point nothing magic about them. Key is fit, sensor position, ease of install (they are all PITA) & material with Stainless steel the metal of choice.

In the $400 range BMS looks to be a good choice. You can spend more or less. IMHO less is more risky on fit & material & more is just too much for two welded pipes.

Regardless a 3" set should allow 15WHP more then you have now.
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      02-07-2013, 01:25 PM   #21
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going with a used, high quality (AR, MS, CPe, etc) is another option....I did and it worked great.

Buying new, BMS DP's are great and have great fittment.

Spend the money and get a quality set of DPs.
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      02-07-2013, 01:36 PM   #22
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I agree Ill most likely go with new BMS, Okay guys help me out I just got my JB4 G5 in the mail today, My brother and I are going to install it but on the DYI video it does not show how to install this new red cord. with two small connectors at the end. Also there is a black box that the jb4 connects to but where do I install that at the bottom of the PCM? the video is good but doesnt show these parts in. please help
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