JB4+BCM vs. Dinan Stage 2

PREDATOR 007 · 07-22-2016, 01:44 PM

Does anyone have any experience with JB4+BCM vs. Dinan stage 2. This would be for a 2016 M5 w/Competition Package.

$1,049 JB4 vs. $3,346 Dinan
JB4 possible warranty issues vs. Dinan-No warranty issues.

Performance of each?

ARC550 · 07-22-2016, 01:48 PM

Quote:

Originally Posted by PREDATOR 007

Does anyone have any experience with JB4+BCM vs. Dinan stage 2. This would be for a 2016 M5 w/Competition Package.

$1,049 JB4 vs. $3,346 Dinan
JB4 possible warranty issues vs. Dinan-No warranty issues.

Performance of each?

Dinan will give you 10hp. 15 torque.
Race gas alone on a stock car will give you more lol.

Jb4 look for upwards of minimum 50whp+ to the ground. Or 75-100crank HP

apexlocator · 07-22-2016, 02:01 PM

How come dinan says their stage 2 takes the car to 675 (crank I think)?

KMORGSM5 · 07-22-2016, 02:01 PM

Throw in some catless dp's with JB4+BCM and you are looking at roughly +100 rwhp for much less than dinan

Lerxst M4 · 07-22-2016, 02:06 PM

Quote:

Originally Posted by ARC550

Dinan will give you 10hp. 15 torque.
Race gas alone on a stock car will give you more lol.

Jb4 look for upwards of minimum 50whp+ to the ground. Or 75-100crank HP

lol...i got 99 whp (509whp - 608 whp) with MSR intake and Dinan stage 2 install. I love my MSR intake but I sure don't think it gave me 89 whp.

MCarsFan · 07-22-2016, 03:03 PM

Quote:

Originally Posted by PREDATOR 007

Does anyone have any experience with JB4+BCM vs. Dinan stage 2. This would be for a 2016 M5 w/Competition Package.

$1,049 JB4 vs. $3,346 Dinan
JB4 possible warranty issues vs. Dinan-No warranty issues.

Performance of each?

Get a tune. Stage I will give you over 700 at the crank. I'm running over 800. They're reliable and have few issues if you use a reputable tuner.

Mike@N54Tuning.com · 07-22-2016, 03:16 PM

The Dinan system is probably more equivalent to the BMS Stage1 in terms of performance. The Stage1 is easy to install and very popular.

The JB4 is a more advanced tune and the BCM module adds another level of complexity on top of the JB4. The JB4+BCM would be for more hard-core enthusiasts who are in to datalogging, tuning themselves, track times, etc.

Mike

ARC550 · 07-22-2016, 03:55 PM

Quote:

Originally Posted by Lerxst M5

Quote:

Originally Posted by ARC550

Dinan will give you 10hp. 15 torque.
Race gas alone on a stock car will give you more lol.

Jb4 look for upwards of minimum 50whp+ to the ground. Or 75-100crank HP

lol...i got 99 whp (509whp - 608 whp) with MSR intake and Dinan stage 2 install. I love my MSR intake but I sure don't think it gave me 89 whp.

Very nice.

I was obviously being sarcastic.

Moral of the story is Dinan = 4K vs BMS stage 1 for $500 lol and BMS wins! Lol

PREDATOR 007 · 07-22-2016, 06:24 PM

Quote:

Originally Posted by Mike@N54Tuning.com

The Dinan system is probably more equivalent to the BMS Stage1 in terms of performance. The Stage1 is easy to install and very popular.

The JB4 is a more advanced tune and the BCM module adds another level of complexity on top of the JB4. The JB4+BCM would be for more hard-core enthusiasts who are in to datalogging, tuning themselves, track times, etc.

Mike

What about warranty issues with JB4? Seems like a lot of issues with the boys on the N54Tech site. Biggest concern is my dealer sticking it to me if I were to have a problem.

ur20v · 07-22-2016, 11:28 PM

007

Its fairly clear the issues are manly with the installer (boost leaks, pin outs or incorrect connections etc) or the car (plugs and or coils) not the JB4 or BMC. I have followed your posts and guess the Dinan solution is probably more for you due to your worries.

PREDATOR 007 · 07-23-2016, 08:27 AM

Yeah, just trying to weigh the risks. Tearing something up and being faced with a big bill on a car that I am leasing vs. a little less power and no worries.

Maybe the JB4 is not a big deal, but reading the issues on the n54 forum does cause one to be wary.

ur20v · 07-23-2016, 10:43 PM

Just find a good installer or just do it yourself and take your time, its easy and the info is there and Terry and us are all here to support you...

TheHouseWon · 07-24-2016, 08:46 AM

Quote:

Originally Posted by ur20v

Just find a good installer or just do it yourself and take your time, its easy and the info is there and Terry and us are all here to support you...

You know, it's funny but this pdf was the single most helpful diagram I used during my install.

Thank you

Edmguy11 · 07-24-2016, 07:58 PM

Quote:

Originally Posted by PREDATOR 007

Yeah, just trying to weigh the risks. Tearing something up and being faced with a big bill on a car that I am leasing vs. a little less power and no worries.

Maybe the JB4 is not a big deal, but reading the issues on the n54 forum does cause one to be wary.

My Two cents is all the issues I have seen with JB4 are all related to the installation of the BCM, and running map 2 on stock fuel trims.

There is no way I would ever consider going Dinan stage 1/2 if I already had the JB4 installed.

The only negative I will say about the BMS Stage 1 / JB4/ JB4+ BCM is the torque curve is not near as good as flash tunes.

Even in my car today with BMS Stage 1, I hate how its very noticeably that the torque peaks at like 4-5.5k rpm.

I can really understand how folks like Imran from Evolve claim 1/4 mile , 60-135 MPH, 0-60 times way above folks with the JB4+BCM even though they are putting down the same peak WHP.

My Two cents is your fine with your current setup.

ur20v · 07-24-2016, 10:04 PM

The reason the torque peaks is it hits the demanded torque value so levels- up the demand (fueling allowing - meth etc) and torque will go higher until the turbos are all out at ~30psi- time for upgraded turbos then. a flash tune normaly have the tables set for a more gradual ramp but this can be done with a JB4 in the tuner map where you can ramp boost(torque) by rpm but also allows you to ramp down boost by gear i.e lower boost target in first and second to help traction.

ur20v · 07-24-2016, 10:05 PM

Quote:

Originally Posted by TheHouseWon

You know, it's funny but this pdf was the single most helpful diagram I used during my install.

Thank you

Thanks... I do plan to take some more photos and add just to give more confidence to the first time installer.

mike@x-ph.com · 07-27-2016, 02:57 PM

Quote:

Originally Posted by PREDATOR 007

What about warranty issues with JB4? Seems like a lot of issues with the boys on the N54Tech site. Biggest concern is my dealer sticking it to me if I were to have a problem.

BMW warranty is the same wether you have Dinan or JB4

Dinan offer their own warranty in case BMW refuses to do the work. So you are losing BMW warranty with either tune (if anything goes really wrong)
REmove your tune before your dealership visit and you will be fine

Jb4 is by far the most popular option so of course you will see more problems, but compared to the numbers of units sold it is as reliable as any other option if not more reliable

TheHouseWon · 07-27-2016, 04:23 PM

Ask the dealer or service advisor if they are mod friendly BEFORE they do work. You should be ok once you have that conversation (and a box or two of bagels).

MuffinFlavored · 04-28-2017, 06:23 PM

Quote:

Originally Posted by ur20v

Thanks... I do plan to take some more photos and add just to give more confidence to the first time installer.

You ever do this? I desperately need it...

ur20v · 04-28-2017, 07:17 PM

Quote:

Originally Posted by MuffinFlavored

You ever do this? I desperately need it...

See attached. Once you get stuck in it all makes sense and the trepidation you feel will evaporate. Just take you time, its easy if a little fiddly.

Take some photos as you go and post here and report how you went.

MuffinFlavored · 05-02-2017, 09:22 AM

Quote:

Originally Posted by ur20v

See attached. Once you get stuck in it all makes sense and the trepidation you feel will evaporate. Just take you time, its easy if a little fiddly.

Take some photos as you go and post here and report how you went.

I spent 4 hours yesterday and paid some dude $200 to help me out because he's installed 6 of these things before.

Of course, I was the special snowflake. I kept getting TMAP Sensor 2 short to ground 120908 code. Tried everything. Different grounds, re-connecting/disconnecting, clearing codes, bumping firmware.

What do you guess? Dispute my credit card and kill myself? Ok.

TheHouseWon · 05-02-2017, 09:34 AM

Strange. Did you buy JB4 new or used? If used did prior owner get codes?

07-22-2016, 01:44 PM	#1
PREDATOR 007 Second Lieutenant 57 Rep 232 Posts Drives: 2016 M5 Join Date: May 2016 Location: Vandalia, OH iTrader: (0)	JB4+BCM vs. Dinan Stage 2 Does anyone have any experience with JB4+BCM vs. Dinan stage 2. This would be for a 2016 M5 w/Competition Package. $1,049 JB4 vs. $3,346 Dinan JB4 possible warranty issues vs. Dinan-No warranty issues. Performance of each?
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07-22-2016, 02:01 PM	#3
apexlocator Captain 243 Rep 881 Posts Drives: 2014 M5 Join Date: Feb 2016 Location: socal iTrader: (1)	How come dinan says their stage 2 takes the car to 675 (crank I think)?
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07-22-2016, 02:01 PM	#4
KMORGSM5 Captain 320 Rep 843 Posts Drives: 14 CP M5 Join Date: Feb 2016 Location: South Florida iTrader: (0)	Throw in some catless dp's with JB4+BCM and you are looking at roughly +100 rwhp for much less than dinan
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07-22-2016, 03:16 PM	#7
Mike@N54Tuning.com Joint Chiefs of Staff 4908 Rep 115,980 Posts Drives: 2007 335i, 2015 M3 Join Date: Dec 2008 Location: N54tuning.com iTrader: (89)	The Dinan system is probably more equivalent to the BMS Stage1 in terms of performance. The Stage1 is easy to install and very popular. The JB4 is a more advanced tune and the BCM module adds another level of complexity on top of the JB4. The JB4+BCM would be for more hard-core enthusiasts who are in to datalogging, tuning themselves, track times, etc. Mike
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07-22-2016, 11:28 PM	#10
ur20v Captain 184 Rep 788 Posts Drives: F10 M5 Join Date: Apr 2016 Location: WA Australia iTrader: (0)	007 Its fairly clear the issues are manly with the installer (boost leaks, pin outs or incorrect connections etc) or the car (plugs and or coils) not the JB4 or BMC. I have followed your posts and guess the Dinan solution is probably more for you due to your worries.
	Appreciate 0 Quote

07-23-2016, 08:27 AM	#11
PREDATOR 007 Second Lieutenant 57 Rep 232 Posts Drives: 2016 M5 Join Date: May 2016 Location: Vandalia, OH iTrader: (0)	Yeah, just trying to weigh the risks. Tearing something up and being faced with a big bill on a car that I am leasing vs. a little less power and no worries. Maybe the JB4 is not a big deal, but reading the issues on the n54 forum does cause one to be wary.
	Appreciate 0 Quote

07-24-2016, 10:04 PM	#15
ur20v Captain 184 Rep 788 Posts Drives: F10 M5 Join Date: Apr 2016 Location: WA Australia iTrader: (0)	The reason the torque peaks is it hits the demanded torque value so levels- up the demand (fueling allowing - meth etc) and torque will go higher until the turbos are all out at ~30psi- time for upgraded turbos then. a flash tune normaly have the tables set for a more gradual ramp but this can be done with a JB4 in the tuner map where you can ramp boost(torque) by rpm but also allows you to ramp down boost by gear i.e lower boost target in first and second to help traction.
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07-27-2016, 04:23 PM	#18
TheHouseWon Colonel 644 Rep 2,039 Posts Drives: 2013 M5 Join Date: Nov 2015 Location: SoCal iTrader: (10)	Ask the dealer or service advisor if they are mod friendly BEFORE they do work. You should be ok once you have that conversation (and a box or two of bagels).
	Appreciate 0 Quote

05-02-2017, 09:34 AM	#22
TheHouseWon Colonel 644 Rep 2,039 Posts Drives: 2013 M5 Join Date: Nov 2015 Location: SoCal iTrader: (10)	Strange. Did you buy JB4 new or used? If used did prior owner get codes?
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