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      07-31-2016, 12:01 PM   #1
//M
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So US is getting screwed on MPPK for 340i

Well still no news. I'm pretty much giving up hope. Highly irritated as I feel this car runs too lean to run a piggyback.

I hope flash tuning is the same as EWG n55's. We need something.
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      07-31-2016, 07:42 PM   #2
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Yes the US is getting screwed!

But initial dyno reports of JB4 show a piggy back works well...
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      08-01-2016, 01:42 AM   #3
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I wonder if the MPPK fits in carry on ?
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      08-01-2016, 02:40 AM   #4
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Drive to Canada and get it done lol! It will probably take awhile but I think it will be released. It's everywhere but the US and I feel like US regulations might be holding it up. To me it seems like there are limited aftermarket options in general for the 340/B58 even though it's been out for over a year.
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      08-01-2016, 08:24 PM   #5
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Quote:
Originally Posted by goj View Post
Yes the US is getting screwed!

But initial dyno reports of JB4 show a piggy back works well...
JB4 not working well for me real world. I'm seeing 14.2:1 AFR's under full boost and higher rpm. I'm also seeing 15.8:1 spikes regularly during spool. I'm not comfortable with it at this time. I messed with the settings some but it needs a O2 biaser like the N54.
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      08-01-2016, 09:06 PM   #6
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Quote:
Originally Posted by tifosielia
Quote:
Originally Posted by goj View Post
Yes the US is getting screwed!

But initial dyno reports of JB4 show a piggy back works well...
JB4 not working well for me real world. I'm seeing 14.2:1 AFR's under full boost and higher rpm. I'm also seeing 15.8:1 spikes regularly during spool. I'm not comfortable with it at this time. I messed with the settings some but it needs a O2 biaser like the N54.
A.J., It runs the same AFRs as the stock tune does. It doesn't run any leaner. If the AFR was that far off the car would be throwing codes left and right. I've yet to see a single code get thrown on mine.
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      08-07-2016, 08:59 AM   #7
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Quote:
Originally Posted by JamRWS6 View Post
A.J., It runs the same AFRs as the stock tune does. It doesn't run any leaner. If the AFR was that far off the car would be throwing codes left and right. I've yet to see a single code get thrown on mine.
Oh of course. But sometimes the Delta on map 1 can be as much as 4psi. 10psi at 14:1 isnt as bad as 14:1 at 14psi with ~10 degrees of timing.

Clearly Terry wasn't happy either as he is using IAT biasing to lower timing. He can't do anything about AFR for now.

But the spikes to almost 16:1 during spool bother me more and it's not on tip in either it's as the spool takes off, so several pounds of boost.

If someone can explain to me how a motor all of sudden can run 11:1 compression, and almost stoichiometric AFR with 14+ pounds of boost on pump when that was impossible for any engine before including the DI N54. Not to mention the IAT temps on this motor tend to be higher on average then the N54. It makes no technical sense to me. When someone can tell me what's changed so dramatically to allow this I'll feel better.

Because as far as I know no motor before has been able to withstand this. Basically my point is I think it's on the bleeding edge for pump gas stock adding 3-4 more psi with equal timing and same AFR has me worried.

I'd like to see what the MPPK runs.

Last edited by //M; 08-07-2016 at 09:10 AM..
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      08-07-2016, 02:02 PM   #8
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The B58 has some unique tuning challenges including an IPW limiter built in to the DME logic. The AFR and tuning the JB4 runs is perfectly safe for the vehicle. As proven by several 1/2 mile events beating the crap out of it. It has lean spool mode down low along with multiple injections per stroke then AFR should be in the mid 13s at higher RPM. Which is the same as all of the F series N55s. On the F series N55s many are running 500whp+ with larger turbos on those air/fuel ratios for tens of thousands of miles with perfect looking plugs and no issues.

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      08-07-2016, 08:25 PM   #9
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Quote:
Originally Posted by tifosielia
Quote:
Originally Posted by JamRWS6 View Post
A.J., It runs the same AFRs as the stock tune does. It doesn't run any leaner. If the AFR was that far off the car would be throwing codes left and right. I've yet to see a single code get thrown on mine.
Oh of course. But sometimes the Delta on map 1 can be as much as 4psi. 10psi at 14:1 isnt as bad as 14:1 at 14psi with ~10 degrees of timing.

Clearly Terry wasn't happy either as he is using IAT biasing to lower timing. He can't do anything about AFR for now.

But the spikes to almost 16:1 during spool bother me more and it's not on tip in either it's as the spool takes off, so several pounds of boost.

If someone can explain to me how a motor all of sudden can run 11:1 compression, and almost stoichiometric AFR with 14+ pounds of boost on pump when that was impossible for any engine before including the DI N54. Not to mention the IAT temps on this motor tend to be higher on average then the N54. It makes no technical sense to me. When someone can tell me what's changed so dramatically to allow this I'll feel better.

Because as far as I know no motor before has been able to withstand this. Basically my point is I think it's on the bleeding edge for pump gas stock adding 3-4 more psi with equal timing and same AFR has me worried.

I'd like to see what the MPPK runs.
The IAT readings can't be relied upon in map1 b/c as you stated that is being altered to keep timing in line. If you are really concerned about this you should probably get in touch w/ Terry and go through some of your concerns. The guy knows a hell of a lot more about this tune than even the guys that work for him and has never shied away from answering my questions. All of the logged parameters are in line with the stock tuning with the exceptions that have been explained by the JB4 altering them to keep other things in check.

If you aren't comfortable with it after talking to him then it is definitely your choice to not run it.
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      08-07-2016, 11:08 PM   #10
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seriously, where is the US MPPK?
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      08-08-2016, 07:23 AM   #11
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Quote:
Originally Posted by eluded
seriously, where is the US MPPK?
Agreed, this a a bit ridiculous. If it isn't available soon with MY 17 cars my hope is dwindling they will bring it here.
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      08-08-2016, 07:43 AM   #12
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I used ignition timing value to disable IAT comp. You move the value from 5 to 0 to disable.

I will send some logs to Terry. I'm seeing probably a half point leaner then what people are saying / dynographs show.
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      08-12-2016, 12:56 PM   #13
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Quote:
Originally Posted by eluded View Post
seriously, where is the US MPPK?
yea seriously...what's going on with this already
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