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2Addicts | BMW 2-Series forum Technical Topics N55 (M235i) Engine, Transmission, Exhaust, Tuning My Dyno with EWG harness+E40

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      05-10-2014, 07:33 PM   #1
schap12
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My Dyno with EWG harness+E40

Finally made it to the Dyno today did a few pulls. I have BMS intake, ER downpipe, M-perf exhaust, JB4 FF wires and EWG harness.

Map 0- 359hp 399ft
Map 2- 401hp around 480ft
For map 7 i ran into an issue it was cut off at 5800rpm at 426hp 512ft. Failsafe boost was set to 19 and didn't really want to raise it and risk anything.

Pretty happy with the results
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2014 M235i Mineral Grey, JB4, ER DP, BMS Intake EWG Beta test, 35% e85,injen intake stage 3 fuel pump by fuel it

Last edited by schap12; 05-10-2014 at 09:33 PM..
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      05-10-2014, 07:41 PM   #2
JustinCredibleM
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Very nice! A few questions:

1. How are you mixing the fuel to get the approximate E40?

2. Was the baseline on Map 1 or Map 0?

3. Does your car have the 8AT? If so, how does it feel under WOT?
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      05-10-2014, 07:43 PM   #3
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Quote:
Originally Posted by JustinCredibleM View Post
Very nice! How are you mixing the fuel to get the approximate E40?

And does your car have the 8AT?
I use the E85 calculator i http://www.intercepteft.com/calc.html
or http://e85prices.com/milesperdollar.htm

but generally its around 4-4.5 e85 and 8-8.5 of 91
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2014 M235i Mineral Grey, JB4, ER DP, BMS Intake EWG Beta test, 35% e85,injen intake stage 3 fuel pump by fuel it
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      05-10-2014, 07:43 PM   #4
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You said Baseline. Is that with everything installed and running the default JB4 Map 1 with E40 gas?
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      05-10-2014, 07:44 PM   #5
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Yes its 8AT
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2014 M235i Mineral Grey, JB4, ER DP, BMS Intake EWG Beta test, 35% e85,injen intake stage 3 fuel pump by fuel it
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      05-10-2014, 07:45 PM   #6
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Quote:
Originally Posted by Delnari View Post
You said Baseline. Is that with everything installed and running the default JB4 Map 1 with E40 gas?
Well baseline map 0 JB4 with everything yes
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      05-10-2014, 07:46 PM   #7
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Probably shouldnt have run Map 0 with e40 but w/e its done
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      05-10-2014, 08:00 PM   #8
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O___________________________________O

baseline seems really high for only e40.

whats JB4 FF wires? and did they release the ewg harness?
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      05-10-2014, 08:42 PM   #9
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Quote:
Originally Posted by kerm1t View Post
O___________________________________O

baseline seems really high for only e40.

whats JB4 FF wires? and did they release the ewg harness?
e40 dp intake
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      05-10-2014, 08:46 PM   #10
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how about the JB4 FF wires and ewg harness??
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      05-10-2014, 09:42 PM   #11
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Quote:
Originally Posted by kerm1t View Post
how about the JB4 FF wires and ewg harness??
yes, everything was on it it was on map 0 though i apologize for the confusion i edited the post
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      05-10-2014, 10:01 PM   #12
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360whp on stock boost levels ? Either it's crank hp or something is wrong here .. Make most sense that's it's 360cranck hp ..
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      05-10-2014, 10:23 PM   #13
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I just ordered my FF wires lol.
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      05-11-2014, 04:37 AM   #14
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Quote:
Originally Posted by schap12 View Post
yes, everything was on it it was on map 0 though i apologize for the confusion i edited the post
oh no, i was asking if burger made them available since they weren't before haha

i was wonder what the FF harness was since I've never heard of them
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      05-11-2014, 06:50 AM   #15
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The EWG harness isn't available to buy yet, some people have them to help with testing.

The flex fuel (FF) harness allows the use of E85 I think.

Quote:
Originally Posted by kerm1t View Post
oh no, i was asking if burger made them available since they weren't before haha

i was wonder what the FF harness was since I've never heard of them
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      05-11-2014, 10:26 AM   #16
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This makes me excited, my downpipe, intake and JB4 should be here any day now.

On another note, has anyone been having rough idle issues with the BMS Intake like some F30 guys have?
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      05-11-2014, 12:00 PM   #17
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Quote:
Originally Posted by Pray for Mojo View Post
This makes me excited, my downpipe, intake and JB4 should be here any day now.

On another note, has anyone been having rough idle issues with the BMS Intake like some F30 guys have?
I haven't and I don't have the JB4 installed yet. I do know that BMS was talking of possibly slightly changing the design for people not planning on using the JB4 due to the exact reason you stated.

But you shouldn't have issues either way.
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      05-11-2014, 02:09 PM   #18
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Why do you have to run such high octane gas to achieve 360+whp? What are the limiting factors of the N55 engine? I would think this motor should be able to get 400whp with the appropriate mods on just 93 octane.......

Where am I going wrong?
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      05-11-2014, 10:41 PM   #19
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Quote:
Originally Posted by Uponone76 View Post
Why do you have to run such high octane gas to achieve 360+whp? What are the limiting factors of the N55 engine? I would think this motor should be able to get 400whp with the appropriate mods on just 93 octane.......

Where am I going wrong?
You "think" or know? I have yet to see the N54 or N55 motors make over 400whp on regular 93, but I have seen it hit 350-360whp though.

Last edited by JustinCredibleM; 05-11-2014 at 11:17 PM..
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      05-12-2014, 05:53 AM   #20
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Quote:
Originally Posted by JustinCredibleM View Post
You "think" or know? I have yet to see the N54 or N55 motors make over 400whp on regular 93, but I have seen it hit 350-360whp though.
Obviously I used the phrase "I would think," hence me asking the question, why is this engine so limited?

Someone brought up the 2jz engine in another thread and it's a great example of what I'm talking about. It's a 21 year old inline 6 engine with twin turbos. No fancy Vanos, direct injection, twin scroll, or electronic waste gate. Yet with just exhaust and a boost controller (not even a tune), these cars produce over 400whp. With full exhaust, intake, boost controller, intercooler, and a tune (which is what OP is running minus the intercooler) the 2jz would produce over 450whp. And of coarse all of these numbers are repeatedly achieved using normal pump gas 93 octane.

So again, my question is, what is the limiting factor of these engines?
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      05-12-2014, 07:56 AM   #21
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The turbos. The 2JZ has a much larger compressor and can breathe higher up. The "boost Threshold" is also much much higher on a 2JZ. Boost isn't built until 2700-3000, but then the usable range is much higher. The N55 produces peak torque from about 1500 rpm on, but power tends to drop off because of the small compressor.
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      05-12-2014, 01:26 PM   #22
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Quote:
Originally Posted by Uponone76 View Post
Obviously I used the phrase "I would think," hence me asking the question, why is this engine so limited?

Someone brought up the 2jz engine in another thread and it's a great example of what I'm talking about. It's a 21 year old inline 6 engine with twin turbos. No fancy Vanos, direct injection, twin scroll, or electronic waste gate. Yet with just exhaust and a boost controller (not even a tune), these cars produce over 400whp. With full exhaust, intake, boost controller, intercooler, and a tune (which is what OP is running minus the intercooler) the 2jz would produce over 450whp. And of coarse all of these numbers are repeatedly achieved using normal pump gas 93 octane.

So again, my question is, what is the limiting factor of these engines?
This is a luxury vehicle and as such, there should be no such thing as "turbo lag" to the consumer. The Supra comes with larger turbos, hence why it can produce more power and has noticeable turbo lag. BMW created a very good engine, but left a tiny turbo so the response is more towards the low-end and so the consumer doesn't have to deal with their heads getting snapped back at 3500 RPM. Furthermore, since the N55 motors generate most of their torque under 2000 RPM, it shows there is virtually no turbo lag and the consumer probably wouldn't be able to feel it. The pros and cons of a small turbo is great low-end and turbo response, but leaves the top-end to be desired since the turbo runs out of air in the higher RPMs. If we had the same engine design and turbo size, then I wouldn't see an issue producing 400whp+ on regular gas. Take a look at some of the aftermarket turbo setups and you'll see these motors making close to 700whp without any internal modifications.

Its all based on reasoning and the design of the car manufacturer.

Last edited by JustinCredibleM; 05-12-2014 at 01:37 PM..
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