[Aurel76420]

Hello,

I am aurel from france

i just buy my new 340i touring

My french dealer doesn't want to install the MPPSK Kit on my car because my car car comes from Austria and not France....

I contacted a German dealership to install it but it is 600KM from home and I will have to stay there for 2 days ....
This kit interests me enormously but suddenly I ask myself to buy a JB4 and an exhaust AKRAPOVIC instead?

Are there any of you who have the akra ? are you satisfy (noise )?

Thanks

PS : sorry for my english

[mike@x-ph.com]

Jb4 is a must on this car whether you are going to add Akra or not

I personally like REMUS exhaust the best

[KD07]

Originally Posted by mike@x-ph.com

Jb4 is a must on this car whether you are going to add Akra or not

I personally like REMUS exhaust the best

Don't get mppsk. Total waste of money. Much better off getting a jb4 and exhaust somewhere else. You'll probably save money too

[CruzM3]

Originally Posted by KD07

Don't get mppsk. Total waste of money. Much better off getting a jb4 and exhaust somewhere else. You'll probably save money too

It's not a waste of money. It sounds great and the extra cost comes from the warranty protection and the fact that it's the only flash tune available that BMW will warranty if something goes wrong.

[KD07]

Originally Posted by Cruz28/40

It's not a waste of money. It sounds great and the extra cost comes from the warranty protection and the fact that it's the only flash tune available that BMW will warranty if something goes wrong.

To each his own. It's all opinion based. I can see the arguments for the warranty. But at the same time I can't. 30 some hp and an exhaust with a warranty is not worth over $2k IMO. I would prefer to spend that money elsewhere on the car.
Jb4 gives you so many more options, capabilities, power, future updates, adjustable, logging, etc. and it's been proven in the past. Mppsk is great knowing that while you're beating the hell out of your car, you are completely covered if you haven't modified anything else. However, similar arguments can be made for the jb4. It is only a piggyback so once it's unplugged it is virtually "untraceable". Yes, I understand if you dig deep enough, nothing is 100% "untraceable." But that is highly unlikely that they will ever detect a jb4 if you were to blow something and remove the jb4 from the car before taking it in for service under warranty.

[Big Nodge]

The exhaust that comes with the MPPSK looks to actually be reasonably priced vs. comparable aftermarket alternatives (full exhaust with midpipe). All seem to go for around $2k. So then $800-$1000 for a 30hp tune with warranty vs. $500 for a JB4 with a stronger tune, more upgrade potential, and no warranty. To me making the blanket statement that the MPPSK is a "total waste of money" is just silly. Some people value the warranty, some value pure performance and like to tinker.

Personally I value the warranty on a brand new engine. In the past I've gone the other route as well, on the Audi platform. Hell I may still add a JB4 or other tune down the road as we get more experience with the B58s.

Before concluding keeping your warranty is a total waste of money, consider these guys, who as of a month ago were getting drivetrain error messages but were afraid to take their car to the dealer to diagnose due to mods.

Originally Posted by miked07

About three weeks ago I hit a decent sized pothole and got this error message. I drove the car home, shut it off, waited about 10 minutes? turned the car back on and the message was gone. Then today driving out of a shopping center gave the car gas in sport mode with manual shifting and the error message reappeared. Same thing, turned the car off and waited 10 mins, message was gone.

Mods are : jb4
Er catless downpipe
Mpe
Bms intake

Anyone else experience this problem? I don't know what to do.

Originally Posted by HitmanHearns

Mine has done the same about 5 times. I thought it was the intake but it just happened with the stock airbox.

It happens when I give it too much gas from a low mph


Same situation for me. I'm modded so haven't token it in.

[CruzM3]

^Exactly and the bugs and quirks are still being worked out of the JB4 for the b58. JB4 is a good tune but I will wait to see if it gets better. Still kind of early on in the B58.

[eluded]

Agree here, question is do you want warranty or not. Some say you can use the JB4 and just disconnected if you blow your motor. I would caution against this since a new B 58 motor and install is rather pricey if not covered by warranty.

[goj]

If you just want an aftermarket tune and exhaust I would go Active Autowerke and Remus.

Active autowerke took their time to develop one map that has better numbers and seems to have better drivability. But, it's still best to do your own research.

[Mike@N54Tuning.com]

Originally Posted by eluded

Agree here, question is do you want warranty or not. Some say you can use the JB4 and just disconnected if you blow your motor. I would caution against this since a new B 58 motor and install is rather pricey if not covered by warranty.

The JB4 leaves no trace once its removed. Saying that if you cause the failure then you shouldn't expect BMW to cover it. Of course if its unrelated to any mods then it should be warrantied and you would need to remove all mods so BMW doesn't blame them for the issue.

Mike

[bradsm87]

I would get the MPPSK.

1) It's the only flash tune available at the moment. You get the full useable fuel trim range, more correct torque reported to the TCU for better shifts etc. Widespread affordable flash tuning is a long way away.

2) It uses a DME-controlled exhaust valve to maintain factory-like absolute zero drone at any RPM.

[jgoens]

I had a PPK on my e90. Gain was marginal...like a little bump. Ended up putting a jb4 and that was a much better step up. With my f30 I just went straight to JB4 and DP.....why play around?

[bradsm87]

Originally Posted by jgoens

why play around?

Because flash tunes are a better and less dodgy way to make power. The JB4 is great with a proper back end flash, like what is currently possible on N54 and N55. Without a back end flash, you're relying on tricking the DME into thinking things are happening that aren't really happening do get a result from it. You also lose your fuel trim range.

Those that know well how each option work choose flash tune every time.

[Mike@N54Tuning.com]

Originally Posted by jgoens

I had a PPK on my e90. Gain was marginal...like a little bump. Ended up putting a jb4 and that was a much better step up. With my f30 I just went straight to JB4 and DP.....why play around?

PPK is not worth getting unless its free with the car Gains are so small you probably wouldn't notice in a blind back to back test.

Mike

[Beek]

Originally Posted by Mike@N54Tuning.com

PPK is not worth getting unless its free with the car Gains are so small you probably wouldn't notice in a blind back to back test.

Mike

Do you mean MPPSK for the B58? I'll admit my butt dyno is not that sensitive but even I noticed the roughly ten percent HP and TRQ bump MPPSK gave my 340. Was it a cheap bump? Hell no but to many the possible warranty issues make the cost more palitable. Would I like to add JB4? Yes and at some point I probably will but for me now is not the time.

edit: I'm guessing you were in fact talking PPK not MPPSK, in any case thanks for all your contributions to the forum!

[bradsm87]

Originally Posted by Mike@N54Tuning.com

PPK is not worth getting unless its free with the car Gains are so small you probably wouldn't notice in a blind back to back test.

Mike

Yes but it's a good place to start and can add a JB4 later and because there is no flash tuning for B58 and the fuel trims are very tight on B58, MPPK + JB4 will have better results than just JB4.

[iMinLuv]

Originally Posted by KD07

To each his own. It's all opinion based. I can see the arguments for the warranty. But at the same time I can't. 30 some hp and an exhaust with a warranty is not worth over $2k IMO. I would prefer to spend that money elsewhere on the car.
Jb4 gives you so many more options, capabilities, power, future updates, adjustable, logging, etc. and it's been proven in the past. Mppsk is great knowing that while you're beating the hell out of your car, you are completely covered if you haven't modified anything else. However, similar arguments can be made for the jb4. It is only a piggyback so once it's unplugged it is virtually "untraceable". Yes, I understand if you dig deep enough, nothing is 100% "untraceable." But that is highly unlikely that they will ever detect a jb4 if you were to blow something and remove the jb4 from the car before taking it in for service under warranty.

Totally agree. I got JB4, Dinan exhaust, CG downpipe, and BMS intake for what that would have cost if not cheaper. I'm pushing easy 50hp more than the kit and I personally like the sound of my set up better but also do like the mppsk as well.

But as stated I don't judge someone for going that route it is warranteed as a nice safe mod to give a little more pep I just was looking for more.

[Mike@N54Tuning.com]

Originally Posted by iMinLuv

Totally agree. I got JB4, Dinan exhaust, CG downpipe, and BMS intake for what that would have cost if not cheaper. I'm pushing easy 50hp more than the kit and I personally like the sound of my set up better but also do like the mppsk as well.

But as stated I don't judge someone for going that route it is warranteed as a nice safe mod to give a little more pep I just was looking for more.

Well said..

Some people like factory options, and some people like to tinker and mod. Hence there are many options. But if you want to make real gains you need a real tune (not BMW PPK)

Mike

[Mike@N54Tuning.com]

Originally Posted by Beek

Do you mean MPPSK for the B58? I'll admit my butt dyno is not that sensitive but even I noticed the roughly ten percent HP and TRQ bump MPPSK gave my 340. Was it a cheap bump? Hell no but to many the possible warranty issues make the cost more palitable. Would I like to add JB4? Yes and at some point I probably will but for me now is not the time.

edit: I'm guessing you were in fact talking PPK not MPPSK, in any case thanks for all your contributions to the forum!

Yes, PPK..

Happy to help out when I can.

Also to mention, BMW rates their gains at the crank, not wheel. Its an important distinction as wheel HP power is more standard approach in the aftermarket community. Loss factor is around 15% usually or so. (crank versus wheel)

Mike

[CruzM3]

Originally Posted by Mike@N54Tuning.com

Also to mention, BMW rates their gains at the crank, not wheel. Its an important distinction as wheel HP power is more standard approach in the aftermarket community. Loss factor is around 15% usually or so. (crank versus wheel)

Mike

Yes but BMW is notorious for underrating there cars as seen by the many stock dyno runs. So there crank ratings are not far off from wheel hp.

[soultraveler00]

I'd love to see a few races between jb4 only vs MPPK only on the b58 platform. My guess is jb4 makes 15-20whp more but won't always be as consistant in a race vs the MPPK.

[HitmanHearns]

Originally Posted by soultraveler00

I'd love to see a few races between jb4 only vs MPPK only on the b58 platform. My guess is jb4 makes 15-20whp more but won't always be as consistant in a race vs the MPPK.

That's how I feel as well. I have JB4 and it is inconsistent but with time let's hope everything smoothens out.