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      09-05-2014, 01:57 PM   #1
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▀▄ eas | EAS M4 enters the 500whp club - JB4 Stage 3 testing: 521whp/540ft-lb tq.

After seeing the impressive results with jc05e46m3's thread here, we were eager to get our JB4 installed and get some numbers. With cooler weather and some race gas (97 octane blend), we were able to crank out some pretty impressive numbers. An 1/8" NPT fitting was plumbed into the charge pipe to get boost readings.

Running Stage 3 configuration on 97 octane fuel, stock exhaust. Runs are maps stock (91 octane), 1 (mild boost, 97 octane) and 7 (E85/high octane map).



Modifications
BMC Filters
97 Octane Fuel

STD


SAE


Conditions


We're officially in M5 territory. Downpipes are going on next and returning back to the dyno for more logging/fine tuning.
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      09-05-2014, 02:14 PM   #2
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Those are great numbers. Looks like temps were little down from the other day
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      09-05-2014, 02:16 PM   #3
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Quote:
Originally Posted by ///M ARMY View Post
Those are great numbers. Looks like temps were little down from the other day
Quite a bit, we were seeing ~100F temps in the shop last week through what seemed to be never-ending heatwave.
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      09-05-2014, 02:18 PM   #4
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Nice. I can't wait to see what kind of numbers this car is going to make with FBO
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      09-05-2014, 02:59 PM   #5
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Tom, awesome!

Those are great numbers and exactly what I would expect given the better temps, race gas and Stage 3 configuration. I would bet money there's another 20whp/20wtq just in fuel alone, not to mention the DPs you're going to install. Great work.

Also, take a look at the Map 7 curve above 5500rpm in comparison with the Map 1 (or to mine) . It looks like the extra octane points are really helping out with keeping the power from falling off so severely. I'm liking how this is looking for sure!
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      09-05-2014, 04:12 PM   #6
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I am assuming this is before any other mods like exhaust and DP? Wow that is a beast. I cannot believe how much potential this motor has.

I ran my stock M4 against a ESS 650 kit M3 today and that thing just goes. Would like to see a race with your car against the ESS M3.
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      09-05-2014, 04:18 PM   #7
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Those are impressive gains!

Appreciate that you also share that much info, both STD and SAE corrections and a stock run as a baseline

Interesting that we see 20+PSI on a stock engine... Seems the DME is capable of exceeding the max stated boost pressure, at least during a dyno run at high temps. Would love to see some "real world" datalogging of a stock car, to see what boost pressures it runs max on the track/road.
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      09-05-2014, 04:26 PM   #8
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Yes, looking great - hopefully soon we will have our M4 on the Dyno with a full tank of 100 octane, JB4 and DPs to compare. - The car definitely rolls out.

Great work guys!!
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      09-05-2014, 04:29 PM   #9
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how much of that power is because of the higher rated fuel. I personally have never cared about how much power someone can make with race fuel. Because its not a something i would ever be tuned for in my car.
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      09-05-2014, 04:58 PM   #10
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Quote:
Originally Posted by E92LNGCGY View Post
I am assuming this is before any other mods like exhaust and DP? Wow that is a beast. I cannot believe how much potential this motor has.

I ran my stock M4 against a ESS 650 kit M3 today and that thing just goes. Would like to see a race with your car against the ESS M3.
No exhaust mods yet, but have DPs already here and ready to go.
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      09-05-2014, 05:00 PM   #11
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nice Tom!
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      09-05-2014, 05:01 PM   #12
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Quote:
Originally Posted by Boss330 View Post
Those are impressive gains!

Appreciate that you also share that much info, both STD and SAE corrections and a stock run as a baseline

Interesting that we see 20+PSI on a stock engine... Seems the DME is capable of exceeding the max stated boost pressure, at least during a dyno run at high temps. Would love to see some "real world" datalogging of a stock car, to see what boost pressures it runs max on the track/road.
The logs you see here are the same pressures you would see in daily/road driving in those respective maps.

Map 1 can vary anywhere from .1 to 26lbs of boost. In general, it hangs around +4psi above stock.

Map 7 targets 25psi.

Terry has run up to 28lbs on his personal car during testing.

Quote:
Originally Posted by M3guy3 View Post
how much of that power is because of the higher rated fuel. I personally have never cared about how much power someone can make with race fuel. Because its not a something i would ever be tuned for in my car.
You can look at other dynos and see. Tom's car is running the eq. of 97 octane in his Map 1 and Map 7 runs whereas mine was around 93 Octane. He made ~17 more whp and ~35 more wtq compared to mine on Map 1 and ~30 more whp and ~45 more wtq on Map 7. The Map 7's aggressiveness is evident with the introduction of higher octanes. There is still more room on the table, too.

The glory of the JB4 is that it doesn't matter if you're running crappy california 91 or MS109. The car will still adjust and perform. These numbers are great because they show what is possible with running something better.
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      09-05-2014, 05:48 PM   #13
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Quote:
Originally Posted by jc05e46m3
Quote:
Originally Posted by Boss330 View Post
Those are impressive gains!

Appreciate that you also share that much info, both STD and SAE corrections and a stock run as a baseline

Interesting that we see 20+PSI on a stock engine... Seems the DME is capable of exceeding the max stated boost pressure, at least during a dyno run at high temps. Would love to see some "real world" datalogging of a stock car, to see what boost pressures it runs max on the track/road.
The logs you see here are the same pressures you would see in daily/road driving in those respective maps.

Map 1 can vary anywhere from .1 to 26lbs of boost. In general, it hangs around +4psi above stock.

Map 7 targets 25psi.

Terry has run up to 28lbs on his personal car during testing.

Quote:
Originally Posted by M3guy3 View Post
how much of that power is because of the higher rated fuel. I personally have never cared about how much power someone can make with race fuel. Because its not a something i would ever be tuned for in my car.
You can look at other dynos and see. Tom's car is running the eq. of 97 octane in his Map 1 and Map 7 runs whereas mine was around 93 Octane. He made ~17 more whp and ~35 more wtq compared to mine on Map 1 and ~30 more whp and ~45 more wtq on Map 7. The Map 7's aggressiveness is evident with the introduction of higher octanes. There is still more room on the table, too.

The glory of the JB4 is that it doesn't matter if you're running crappy california 91 or MS109. The car will still adjust and perform. These numbers are great because they show what is possible with running something better.
I was thinking of the stock boost and that BMW have said 18PSI is max boost. And that max boost is reserved for bad conditions (like high temp and/or altitude) in order to have a boost reserve so the engine always makes it's target power.

Basically this means that we should NOT see max boost on a cool day at sea level etc.

This is what would be interesting to see some datalogging of as well. This would be of most interest on a stock engine and no tune.
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      09-05-2014, 07:09 PM   #14
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Quote:
Originally Posted by Boss330 View Post
I was thinking of the stock boost and that BMW have said 18PSI is max boost. And that max boost is reserved for bad conditions (like high temp and/or altitude) in order to have a boost reserve so the engine always makes it's target power.

Basically this means that we should NOT see max boost on a cool day at sea level etc.

This is what would be interesting to see some datalogging of as well. This would be of most interest on a stock engine and no tune.
I have datalogged and we do see max boost. When the conditions are worse, we see more than max boost (up to 20)...and yes, with no tune.
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      09-05-2014, 08:21 PM   #15
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Damn good numbers!!! Can't wait to see someone hit the strip with these beasts!!
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      09-05-2014, 09:56 PM   #16
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If I fill my tank with 100 octane, will the JB auto tune and make more power?
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      09-05-2014, 10:44 PM   #17
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Quote:
Originally Posted by AYF80
If I fill my tank with 100 octane, will the JB auto tune and make more power?
I thought you needed to change maps for this
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      09-05-2014, 10:57 PM   #18
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Quote:
Originally Posted by AYF80 View Post
If I fill my tank with 100 octane, will the JB auto tune and make more power?
Depends on firmware since JB4 is still in beta for S55.

As of now, MAP1 is only available and different maps are being provided on a trial basis as logs are submitted to make sure everything is 100% safe.
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      09-05-2014, 11:15 PM   #19
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Wow, those are amazing numbers! Good job, guys!
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      09-06-2014, 12:14 AM   #20
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Quote:
Originally Posted by GGreek5 View Post
Damn good numbers!!! Can't wait to see someone hit the strip with these beasts!!
Soon I should be at both upcoming Airstrip events, too.


Quote:
Originally Posted by AYF80 View Post
If I fill my tank with 100 octane, will the JB auto tune and make more power?
Not exactly. The DME will adjust for the better octane and utilize the more aggressive mapping in the different maps, but as Tom said, it is highly advised to only utilize the recommended settings from Burger Tuning. Without the proper logging and "approval", you are taking a chance that could end in severe consequences. Map 1 is the only approved map ATT.

Quote:
Originally Posted by Andrew115 View Post
I thought you needed to change maps for this
You don't have to change maps, but obviously changing is much more beneficial. A stock car will still run stronger with higher octane.

Quote:
Originally Posted by tom @ eas View Post
Depends on firmware since JB4 is still in beta for S55.

As of now, MAP1 is only available and different maps are being provided on a trial basis as logs are submitted to make sure everything is 100% safe.
Well said. Anyone who does not follow this rule of thumb is certainly taking an unnecessary risk.

Quote:
Originally Posted by Jaded M3 View Post
Wow, those are amazing numbers! Good job, guys!
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      09-06-2014, 01:33 AM   #21
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Quote:
Originally Posted by jc05e46m3
Quote:
Originally Posted by Boss330 View Post
I was thinking of the stock boost and that BMW have said 18PSI is max boost. And that max boost is reserved for bad conditions (like high temp and/or altitude) in order to have a boost reserve so the engine always makes it's target power.

Basically this means that we should NOT see max boost on a cool day at sea level etc.

This is what would be interesting to see some datalogging of as well. This would be of most interest on a stock engine and no tune.
I have datalogged and we do see max boost. When the conditions are worse, we see more than max boost (up to 20)...and yes, with no tune.
Thanks!

Could you post the datalogging results? For instance with results for boost, IAT, altitude and MAF

If we really see 20PSI of boost in real world driving, then that is one piece of evidence that supports under rating (if we are to believe BMW's claim of a absolute max boost of 18PSI... This might have been misunderstood though and it might also be that 18PSI is max for normal conditions and the DME can use overboost for worse conditions?)
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      09-06-2014, 07:35 AM   #22
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Solid gains
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