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2Addicts | BMW 2-Series forum Technical Topics N55 (M235i) Engine, Transmission, Exhaust, Tuning Completely different car - WITH DYNO! (351whp/390wtq) [updated]

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      09-01-2014, 11:18 PM   #89
daisy16905
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I pulled the trigger tonight as well, changing from map 5 to map 7!!! I run 4.5 gal of E85 with 9.2 gal of 91......roughly 95.5 octane.

Initial impressions: Accelerated at stop light from a stop, making right turn (another car inside lane) did 60% or so throttle and OMG rear pushed out and I did short drift!!!!! Car feels faster on Map 7 than Map 5 (spent month plus running).
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      09-02-2014, 08:16 AM   #90
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You shouldn't be mixing more then 30% E85 with the EWG JB4 setup. It is not designed for this and you risk running super lean!!!
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      09-02-2014, 01:39 PM   #91
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Quote:
Originally Posted by alz0rz View Post
You shouldn't be mixing more then 30% E85 with the EWG JB4 setup. It is not designed for this and you risk running super lean!!!
FYI - Please do your homework before posting!!

Link to calculator:

http://www.intercepteft.com/calc.html

4.5 gal E85 / 9.2 gal 91
95.6 octane
27.9% ethanol (or E28)
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      09-02-2014, 01:57 PM   #92
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how do these different mixes affect the engine (e.g. carbon buildup/etc..) ? Just wondering what the risks are.

thanks
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      09-02-2014, 01:58 PM   #93
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Quote:
Originally Posted by daisy16905 View Post
FYI - Please do your homework before posting!!

Link to calculator:

http://www.intercepteft.com/calc.html

4.5 gal E85 / 9.2 gal 91
95.6 octane
27.9% ethanol (or E28)
That post was not directed at you (hence I did not quote you) and I don't need a 'calculator' to tell me what 30% of a number is. It was more of a PSA for anyone thinking they can just fill up their tank with E85 to get more power.
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      09-02-2014, 02:49 PM   #94
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Quote:
Originally Posted by alz0rz View Post
That post was not directed at you (hence I did not quote you) and I don't need a 'calculator' to tell me what 30% of a number is. It was more of a PSA for anyone thinking they can just fill up their tank with E85 to get more power.
I'm under the impression the rule of thumb is more so 30% ethanol content as opposed to 30% E85 by liquid volume. Considering that standard pump gasoline is already 10% ethanol, the calculator comes in handy.

Quote:
Originally Posted by BLK235iNJ View Post
how do these different mixes affect the engine (e.g. carbon buildup/etc..) ? Just wondering what the risks are.

thanks
I don't think carbon buildup is a concern and I have seen nothing indicating it produces more or less than standard gas. There are no real risks when mixing E85 in such low concentrations like this (as in only 4 gallons to our 15.9 gallon tanks). It's effectively 105-110 octane, burns a lot cooler than standard gasoline, and provides for more performance and knock resistance than Sunoco or VP 100-octane race fuel (pretty much the highest level unleaded fuel). It is however more corrosive than gasoline and is significantly less efficient, requiring 25-30% more fuel. This inefficiency is where problems may arise when you are using too much E85 at higher power/boost levels where the factory fuel system will not be able to flow enough fuel.
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      09-02-2014, 02:56 PM   #95
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Great info thanks!

Quote:
Originally Posted by FC4 View Post
I'm under the impression the rule of thumb is more so 30% ethanol content as opposed to 30% E85 by liquid volume. Considering that standard pump gasoline is already 10% ethanol, the calculator comes in handy.



I don't think carbon buildup is a concern and I have seen nothing indicating it produces more or less than standard gas. There are no real risks when mixing E85 in such low concentrations like this (as in only 4 gallons to our 15.9 gallon tanks). It's effectively 105-110 octane, burns a lot cooler than standard gasoline, and provides for more performance and knock resistance than Sunoco or VP 100-octane race fuel (pretty much the highest level unleaded fuel). It is however more corrosive than gasoline and is significantly less efficient, requiring 25-30% more fuel. This inefficiency is where problems may arise when you are using too much E85 at higher power/boost levels where the factory fuel system will not be able to flow enough fuel.
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      09-02-2014, 03:56 PM   #96
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Quote:
Originally Posted by FC4 View Post
I'm under the impression the rule of thumb is more so 30% ethanol content as opposed to 30% E85 by liquid volume. Considering that standard pump gasoline is already 10% ethanol, the calculator comes in handy.



I don't think carbon buildup is a concern and I have seen nothing indicating it produces more or less than standard gas. There are no real risks when mixing E85 in such low concentrations like this (as in only 4 gallons to our 15.9 gallon tanks). It's effectively 105-110 octane, burns a lot cooler than standard gasoline, and provides for more performance and knock resistance than Sunoco or VP 100-octane race fuel (pretty much the highest level unleaded fuel). It is however more corrosive than gasoline and is significantly less efficient, requiring 25-30% more fuel. This inefficiency is where problems may arise when you are using too much E85 at higher power/boost levels where the factory fuel system will not be able to flow enough fuel.

I was thinking about running a HFS-4 along with E30. Overkill?
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      09-02-2014, 04:01 PM   #97
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My Aquamist kit is the only thing I am keeping from my prior build....
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      09-02-2014, 06:26 PM   #98
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So out of curiosity what u guys expect from jb4 with ewg wires on map 2, downpipe, intake on 93oct .. Around 360ish ?
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      09-02-2014, 07:11 PM   #99
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I'd expect near what I got given that exact setup is what this thread is about!

Just remember to buy and install the flex fuel wiring harness with the ewg harness.
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      09-02-2014, 08:01 PM   #100
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Quote:
Originally Posted by ShlemonboostedM View Post
So out of curiosity what u guys expect from jb4 with ewg wires on map 2, downpipe, intake on 93oct .. Around 360ish ?
See the first post in this thread.
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      09-02-2014, 08:41 PM   #101
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Quote:
Originally Posted by daisy16905 View Post
FYI - Please do your homework before posting!!

Link to calculator:

http://www.intercepteft.com/calc.html

4.5 gal E85 / 9.2 gal 91
95.6 octane
27.9% ethanol (or E28)
According to my calculator assuming 91 is E10
That mixture would be about 35% .
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      09-02-2014, 11:07 PM   #102
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Quote:
Originally Posted by olaosunt View Post
According to my calculator assuming 91 is E10
That mixture would be about 35% .
Station I get 91 at has no ethanol in the gas, some station put in E10 and others don't add any. Key is to ask station manager and consistently go to same station.
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      09-03-2014, 04:41 AM   #103
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Quote:
Originally Posted by daisy16905 View Post
Station I get 91 at has no ethanol in the gas, some station put in E10 and others don't add any. Key is to ask station manager and consistently go to same station.
Fuel gets mixed before it gets to the gas station. Mobil? Shell?
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      09-03-2014, 09:28 AM   #104
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Shell V Power 91 up here has no ethanol.
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      09-03-2014, 11:31 PM   #105
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Quote:
Originally Posted by boost82 View Post
Fuel gets mixed before it gets to the gas station. Mobil? Shell?
Station I go to is not a chain...... plus closest one to me for E85.
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      09-04-2014, 05:53 AM   #106
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Quote:
Originally Posted by alz0rz View Post
Alright, I updated the first post with dyno numbers and video. I have to say I am not that that impressed with the JB4!

I ran the car with it completely off and managed 325whp (with the other mods). Running Map 2 brought me up to 351whp/390tq. Only a 25whp gain with the JB4.. hmm!
Finally someone with a specific answer to my question of JB4 on top of PPK, thanks. OP, is the extra ~8% gain ( I didn't use a calculator) worth it? I also thought you need a DP for anything other than map 1 or 5?
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      09-04-2014, 01:07 PM   #107
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Quote:
Originally Posted by liborio View Post
Finally someone with a specific answer to my question of JB4 on top of PPK, thanks. OP, is the extra ~8% gain ( I didn't use a calculator) worth it? I also thought you need a DP for anything other than map 1 or 5?
He has downpipes and intake as well.!
See my numbers for gain with JB4 with MPE alone.
403/450 on E30/map 7
ET 12.39@112 with 2900 DA
No Dyno stock but it ran 13.4@104 so at least 80-100 rwhp gain
Definitely worth it for $600 bucks
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      09-04-2014, 04:33 PM   #108
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Quote:
Originally Posted by olaosunt View Post
He has downpipes and intake as well.!
See my numbers for gain with JB4 with MPE alone.
403/450 on E30/map 7
ET 12.39@112 with 2900 DA
No Dyno stock but it ran 13.4@104 so at least 80-100 rwhp gain
Definitely worth it for $600 bucks
what settings for drive mode, trans, traction control did you have for that run...?

my best was 13.159 stock
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      09-04-2014, 11:05 PM   #109
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Quote:
Originally Posted by pikcachu View Post
what settings for drive mode, trans, traction control did you have for that run...?

my best was 13.159 stock
Engine was just broken in.
Sport plus,auto.
What was your trap speed DA when you ran 13.159?
DA the day of my run was close to 3000ft.
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      09-04-2014, 11:18 PM   #110
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trap speed was 103.14... not sure what DA means
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