JB4

Skyhigh · 01-09-2019, 02:33 PM

I have been reading a lot about JB4 here and although I have no intention to void my warranty and jeopardise the engine (yet), I wonder how high the risk on B58 is? Those of you who have experience with it:
- Are you using it in combination with MPPSK (or other mods)?
- How many km have you been driving it for and how hard?
- Have you had engine-related issues with it and what?

mike@x-ph.com · 01-09-2019, 06:44 PM

Jb4 is the most proven BMW tune in the world, its 100% safe.
No reason to worry.

We offer it with free Express shipping & 14 day money back guarantee if you would like to give it a try

ashok66 · 01-09-2019, 07:27 PM

Quote:

Originally Posted by Skyhigh

I have been reading a lot about JB4 here and although I have no intention to void my warranty and jeopardise the engine (yet), I wonder how high the risk on B58 is? Those of you who have experience with it:
- Are you using it in combination with MPPSK (or other mods)?
- How many km have you been driving it for and how hard?
- Have you had engine-related issues with it and what?

I was little hesitant but pulled the trigger. Have a brand new 2019 440ix. Waited to hit 1,200 miles and bought the JB4. Car is stock on 93 octane

Have had the JB4 2 weeks. No problems! Pulls hard. Smashed the gas pedal many times. No problems so far. I'm getting more confident with it each day
Trying to get some clean logs for review by BMS over on N54

Buy it!

fb58 · 01-10-2019, 11:39 AM

jb4 can log solid purchase imo

Skyhigh · 01-10-2019, 12:09 PM

Quote:

Originally Posted by ashok66

Quote:

Originally Posted by Skyhigh

I have been reading a lot about JB4 here and although I have no intention to void my warranty and jeopardise the engine (yet), I wonder how high the risk on B58 is? Those of you who have experience with it:
- Are you using it in combination with MPPSK (or other mods)?
- How many km have you been driving it for and how hard?
- Have you had engine-related issues with it and what?

I was little hesitant but pulled the trigger. Have a brand new 2019 440ix. Waited to hit 1,200 miles and bought the JB4. Car is stock on 93 octane

Have had the JB4 2 weeks. No problems! Pulls hard. Smashed the gas pedal many times. No problems so far. I'm getting more confident with it each day
Trying to get some clean logs for review by BMS over on N54

Buy it!

Thanks for the post. I am sure it would be well known if anything would fail after 2 weeks

I am more interested in those who have used it for >2 years, as I don't normally change cars every 5 weeks

)

mike@x-ph.com · 01-10-2019, 01:02 PM

Quote:

Originally Posted by ashok66

I was little hesitant but pulled the trigger. Have a brand new 2019 440ix. Waited to hit 1,200 miles and bought the JB4. Car is stock on 93 octane

Have had the JB4 2 weeks. No problems! Pulls hard. Smashed the gas pedal many times. No problems so far. I'm getting more confident with it each day
Trying to get some clean logs for review by BMS over on N54

Buy it!

Awesome

estorilbluef36 · 01-11-2019, 02:30 AM

Quote:

Originally Posted by Skyhigh

I have been reading a lot about JB4 here and although I have no intention to void my warranty and jeopardise the engine (yet), I wonder how high the risk on B58 is? Those of you who have experience with it:
- Are you using it in combination with MPPSK (or other mods)?
- How many km have you been driving it for and how hard?
- Have you had engine-related issues with it and what?

I have a 2018 440i GC and have had a jb4 on my car for about 4000 miles now. so far, knock on wood, no issues at all. everything running smooth and good. the car pushes. FBO with jb4 (EWG and FF wires), MPE, ER catless dp, bms intake. would love to give u HP numbers but never dyno the car.

B58 · 01-12-2019, 12:44 PM

Quote:

Originally Posted by estorilbluef36

I have a 2018 440i GC and have had a jb4 on my car for about 4000 miles now. so far, knock on wood, no issues at all. everything running smooth and good. the car pushes. FBO with jb4 (EWG and FF wires), MPE, ER catless dp, bms intake. would love to give u HP numbers but never dyno the car.

If it helps, i made best of 410/426 on map 5 with just a bms intake, cg 5" catted dp, MPE which probably doesn't add hp, and 3 gallons of e85 mixed with a full tank of 91.

cfm56d7b · 01-12-2019, 04:01 PM

Very informative thread on the difference between N55 and B58 charge pipes:

https://f30.bimmerpost.com/forums/sh....php?t=1462197

Wires · 01-12-2019, 05:03 PM

The reality is the JB4 has been on the turbo BMW engines for 12+ years now. If they had issues, I doubt they'd still be selling them.

I put one on my 3.0L Audi engine and insanely happy with it (it's been 3 months now). I went the Active Autowerke for my 340 (to be different), but I like the JB4 for the smooth WOT shifts.

240zman · 01-13-2019, 07:00 PM

Just make sure you use the proper map for the fuel/mods you are using. I've seen a few b58 owners abuse the jb4(not knowing what there doing) and destroying their engines.

Mike@N54Tuning.com · 01-16-2019, 09:31 AM

Quote:

Originally Posted by fb58

jb4 can log solid purchase imo

+1

Logging is an invaluable tool for any tune.

Jb4 has been around for almost 10 years now (started on N54 platform) Well proven and well developed.

Mike

ArmanHoss · 08-02-2020, 08:49 PM

I just finished installing the JB4 with a autowerk catless DP and an AGP intake. During idle the car sounds like it is choking, even on map 0. I ran it on map 1 and 2 for a little bit and it was pulling fine, but whenever I park or leave it in neutral it starts to choke. Is this normal or did I mess something up?

_N54 · 08-03-2020, 11:39 AM

Quote:

Originally Posted by ArmanHoss

I just finished installing the JB4 with a autowerk catless DP and an AGP intake. During idle the car sounds like it is choking, even on map 0. I ran it on map 1 and 2 for a little bit and it was pulling fine, but whenever I park or leave it in neutral it starts to choke. Is this normal or did I mess something up?

Recheck your intake and JB4 connections.

01-09-2019, 02:33 PM	#1
Skyhigh Brigadier General 1879 Rep 3,860 Posts Drives: BMW F36 Join Date: Apr 2018 Location: Europe iTrader: (0)	JB4 - risks and issues I have been reading a lot about JB4 here and although I have no intention to void my warranty and jeopardise the engine (yet), I wonder how high the risk on B58 is? Those of you who have experience with it: - Are you using it in combination with MPPSK (or other mods)? - How many km have you been driving it for and how hard? - Have you had engine-related issues with it and what? __________________ "Large increases in cost with questionable increases in performance can be tolerated only in cars and women."
	Appreciate 0 Tweet Quote

01-09-2019, 06:44 PM	#2
mike@x-ph.com BimmerPost Supporting Vendor 24095 Rep 190,633 Posts Drives: 07-335/12-328/18-M4/21-M4CP Join Date: Sep 2013 Location: Las Vegas iTrader: (23)	Jb4 is the most proven BMW tune in the world, its 100% safe. No reason to worry. We offer it with free Express shipping & 14 day money back guarantee if you would like to give it a try __________________ Check out our current sale by clicking on this link! https://x-ph.com/sale/ Phone number 702-494-9435
	Appreciate 1 nikman011174.50 Quote

01-10-2019, 11:39 AM	#4
fb58 Private 30 Rep 80 Posts Drives: 18' AT 340Xi Join Date: Oct 2018 Location: ny iTrader: (0)	jb4 can log solid purchase imo
	Appreciate 0 Quote

01-12-2019, 04:01 PM	#9
cfm56d7b Lieutenant General 5876 Rep 10,249 Posts Drives: 2017 440i Gran Coupe & 2015 X5 Join Date: Nov 2012 Location: Orange County, CA iTrader: (2)	Very informative thread on the difference between N55 and B58 charge pipes: https://f30.bimmerpost.com/forums/sh....php?t=1462197
	Appreciate 0 Quote

01-12-2019, 05:03 PM	#10
Wires Brigadier General 1644 Rep 4,871 Posts Drives: 2016 340i xDrive Join Date: Apr 2008 Location: Calgary iTrader: (0)	The reality is the JB4 has been on the turbo BMW engines for 12+ years now. If they had issues, I doubt they'd still be selling them. I put one on my 3.0L Audi engine and insanely happy with it (it's been 3 months now). I went the Active Autowerke for my 340 (to be different), but I like the JB4 for the smooth WOT shifts.
	Appreciate 0 Quote

01-13-2019, 07:00 PM	#11
240zman Enlisted Member 11 Rep 32 Posts Drives: 03' 530 72' 240z 17' 340i Join Date: Oct 2011 Location: SoCal iTrader: (0)	Just make sure you use the proper map for the fuel/mods you are using. I've seen a few b58 owners abuse the jb4(not knowing what there doing) and destroying their engines.
	Appreciate 0 Quote

08-02-2020, 08:49 PM	#13
ArmanHoss New Member 2 Rep 8 Posts Drives: BMW 340i Join Date: Apr 2020 Location: Georgia iTrader: (0)	I just finished installing the JB4 with a autowerk catless DP and an AGP intake. During idle the car sounds like it is choking, even on map 0. I ran it on map 1 and 2 for a little bit and it was pulling fine, but whenever I park or leave it in neutral it starts to choke. Is this normal or did I mess something up?
	Appreciate 0 Quote