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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > N20 and N26 Turbo Engine / Drivetrain / Exhaust Modifications > N20 328i JB4 **STAGE2** Dyno Testing -- New World Record. :)
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      02-28-2013, 09:02 AM   #1
Mike@N54Tuning.com
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N20 328i JB4 **STAGE2** Dyno Testing -- New World Record. :)

Just got this info so I thought I would share..


As you know BMS has been working on the JB4 for the N20 motor (Stage2) for the last month or so and they have made some really solid and amazing progress.

The car is 100% stock (tune only) Only mod is the JB4 and a 50% mixture of E85 fuel and 91 octane (e.g. approx E40 fuel).

Results: A new N20 2.0l world dyno record: 300+whp and 350+wtq!!! Baseline with factory tuning (only with E85 fuel) was 237whp. Gains were as high as +70whp (~90 crank hp) in areas under the curve.

A few comments:

1) Not ready to release all of the tuning details but will say peak boost was around 23psi (compared to 17psi factory), and in areas under the curve making as much as 10psi more than the factory.

2) As expected the platform LOVES E85 fuel. Performance on 91 or 93 octane fuel will be substantially lower but will be stronger than Stage1 power levels.

And a very interesting observation I think

3) During testing they opened up the airbox to simulate a high flow intake and determine the potential for intake power gains. In doing so they found exactly zero horsepower gained even at these high boost levels. The factory airbox is simply not a restriction at 300rw. For this reason its suggested you use only the factory airbox with the N20 platform. Companies claiming gains with intakes on this platform are potentially fooling themselves and/or you.

Mike

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      02-28-2013, 09:24 AM   #2
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Wow, this is absolutely amazing. The tuner crowd will be all over the N20 series cars. My goodness these gains are amazing.
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      02-28-2013, 10:27 AM   #3
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Omg I just got my stage one from you mike >. <
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      02-28-2013, 10:29 AM   #4
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Quote:
Originally Posted by 1lyfe View Post
Omg I just got my stage one from you mike >. <
We'll have a stage2 upgrade for all those with stage1. As far as I know the stage2 will initially only be available as an upgrade to existing original stage1 customers.

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      02-28-2013, 10:29 AM   #5
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Wow nice! Might have to ditch the AFE and get the BMS for the stage II
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      02-28-2013, 10:32 AM   #6
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Quote:
Originally Posted by Mike@N54Tuning.com View Post
We'll have a stage2 upgrade for all those with stage1. As far as I know the stage2 will initially only be available as an upgrade to existing original stage1 customers.

Mike
Ahh ok
Any idea of the cost?
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      02-28-2013, 10:37 AM   #7
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When is it releasing?
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      02-28-2013, 10:40 AM   #8
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I don't have E85 around here. I would like to see 93 octane results.
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      02-28-2013, 10:42 AM   #9
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Quote:
Originally Posted by bnekic View Post
I don't have E85 around here. I would like to see 93 octane results.
Those are coming in the next few weeks..

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      02-28-2013, 10:43 AM   #10
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Quote:
Originally Posted by 1lyfe View Post
Ahh ok
Any idea of the cost?
Quote:
Originally Posted by ScarecrowBoat View Post
When is it releasing?
No ETA right now. No pricing info but I would imagine it would follow something similar to the N55 Stage2 upgrade path in terms of cost and hardware involved.

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      02-28-2013, 11:00 AM   #11
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E85 is too sparse, will want to see 93 octane numbers.

I had a suspicion that 10-14whp claimed gains on intakes was BS.
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      02-28-2013, 11:17 AM   #12
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Hows the stock FMIC holding up? I should say how heat soaked does it get?
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      02-28-2013, 12:24 PM   #13
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With all the torque these engines are making, my concern is if the 8 speed transmission can withstand it without being damaged
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      02-28-2013, 12:51 PM   #14
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Quote:
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With all the torque these engines are making, my concern is if the 8 speed transmission can withstand it without being damaged
Well, if it can hold a tuned N55 it can hold a tuned N20.
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      02-28-2013, 01:16 PM   #15
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Great news. I cannot wait to ugrade to stage 2. Stage 1 is already awesome.

I also do not know anywhere to get E85 fuel..But every once and awhile, I fill up about half my tank with 91 and half my tank with 100 octane. The difference is CRAZY! That 100 octane makes a huge difference.

Would the E85 be comparable to mixing a tank with 100 octane?
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      02-28-2013, 02:15 PM   #16
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Quote:
Originally Posted by RollingLower420 View Post
Great news. I cannot wait to ugrade to stage 2. Stage 1 is already awesome.

I also do not know anywhere to get E85 fuel..But every once and awhile, I fill up about half my tank with 91 and half my tank with 100 octane. The difference is CRAZY! That 100 octane makes a huge difference.

Would the E85 be comparable to mixing a tank with 100 octane?
E85 is closer to a pure tank of 100-105. But it is less efficient so mpg will suffer, but power sure won't as long as your tune is for e85.
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      02-28-2013, 03:01 PM   #17
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Quote:
Originally Posted by Jamesons Viggen View Post
I had a suspicion that 10-14whp claimed gains on intakes was BS.
I have read a number of reviews about the various intakes where power & torque gains were zero, and even 1-2whp LOWER than stock!

Some look impressive and even imposing, but once you close the bonnet…
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      02-28-2013, 03:05 PM   #18
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Quote:
Originally Posted by David328M-Sport View Post
I have read a number of reviews about the various intakes where power & torque gains were zero, and even 1-2whp LOWER than stock!

Some look impressive and even imposing, but once you close the bonnet…
For sound, I would spend $200. Any more then that and its not worth it. The AFe was $270 around the holidays.
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      02-28-2013, 03:08 PM   #19
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Not sure, but I think I just peed my pants (I'lll check later): I have an E85 station 5 min from my house. $4.09 / gallon vs Premium at $4.29.
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      02-28-2013, 03:13 PM   #20
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Quote:
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For sound, I would spend $200. Any more then that and its not worth it. The AFe was $270 around the holidays.
Yeah, I forgot about sound.
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      02-28-2013, 04:05 PM   #21
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Quote:
Originally Posted by Jamesons Viggen View Post
E85 is closer to a pure tank of 100-105. But it is less efficient so mpg will suffer, but power sure won't as long as your tune is for e85.
Ah thanks for the info. I have never seen or really heard about E85 before.

I wonder what a full tank of 100 octane would be like. Gotta try that...
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      02-28-2013, 05:09 PM   #22
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