N55 JB Stage 1 Question... - BMW 3-Series (E90 E92) Forum

trk411 · 10-06-2012, 03:03 PM

Hey guys,
So, I finally got the USB cable to make some adjustments to the stage 1. Now, my understanding was that it came preset with something along the lines of 2.5 or 2.75 boost over stock. However, when I connected mine, the figure was 3.5 . Now, I did take it up to 4.25 just to see what it feels like. Anyone have any info as to why it may have been 3.5? Not complaining because the car feels great - just curious. Any info appreciated.

Slops · 10-06-2012, 03:36 PM

I didn't know you could change anything with the jb3 stage1

trk411 · 10-06-2012, 03:40 PM

Yeah, you can download the interface to a laptop and connect to the JB. Can up the boost if so desired.

Mike@N54Tuning.com · 10-07-2012, 07:42 AM

Quote:

Originally Posted by trk411

Hey guys,
So, I finally got the USB cable to make some adjustments to the stage 1. Now, my understanding was that it came preset with something along the lines of 2.5 or 2.75 boost over stock. However, when I connected mine, the figure was 3.5 . Now, I did take it up to 4.25 just to see what it feels like. Anyone have any info as to why it may have been 3.5? Not complaining because the car feels great - just curious. Any info appreciated.

It's preset at 3.5psi as that has proven to be knock free and performs well across a wide range of conditions. BMS doesn't suggest changing the setting as the Stage1 can't monitor knock and AFR directly. So you would have no real basis for making changes unless you had an external scanning tool, etc. The better solution is the JB4 upgrade which has auto tuning, etc.

Mike

trk411 · 10-07-2012, 08:06 AM

Thanks for the reply. I guess because I read so many other threads about people bumping the boost up with the stage 1 that I figured it would be ok. In fact, I think I read that some people were running +5 or 6 with Stage 1 without incident (correct octane of course). I know every situation is different, but should I bump it back down to 3.5? I always run 93. I haven't taken the car out yet with the +4.25 setting yet, but if there might be issues I'll take it back down to 3.5. Any thoughts?

Swerd430 · 10-07-2012, 07:37 PM

I run +5 with 93. The only other thing I have done is a drop in K&N. No problems at all. My buddy works at the dealer and I never have any codes. Happy tuning.

Charleston335 · 10-08-2012, 03:13 PM

Did you guys feel a nice bump in performance going from 3.5lbs to a higher setting? I just ordered my USB cable to do that since the weather is getting colder and I run 93 octane. Also can you quickly explain how to do it, do I hook it up to the laptop while chip is on?

trk411 · 10-08-2012, 08:15 PM

I was able to drive the car a good bit today with the +4.25 setting. It is definitely more noticeable than 3.5, especially with torque. I got on it pretty hard with no CEL or limp mode. You can find directions for hooking it up here:

http://www.n54tech.com/forums/showthread.php?t=7992

Swerd430 · 10-09-2012, 08:36 AM

Definitely a nice bump from 3.5 to 5. Just look at the link that trk posted above for instructions.

swifty · 10-09-2012, 11:00 AM

Hey Op, is your stage 1 the same as the following?

http://burgertuning.com/N55_Jb_BMW_P...nce_Tuner.html

trk411 · 10-09-2012, 11:55 AM

Yup, that's it.

swifty · 10-09-2012, 12:35 PM

Thanks OP but I don't see an option for USB? What can you do with the USB other than change the boost?

Also, my car just got updated to the newest DME software. Is there anything to worry about installing this?

trk411 · 10-09-2012, 12:46 PM

You just order the USB cable separately. One end to your laptop, the other to the tune. Not sure about what other settings can be tweaked, if any. From what I read, the tune should be fine with the newest DME update, but someone correct me if I'm wrong.

Charleston335 · 10-10-2012, 09:13 AM

Thanks, I pushed it up to 4.5 last night (cold weather) and I was able to spin the tires hard in 1st gear which I wasn't really able to do at 3.5 psi. Def feels more aggressive

10-06-2012, 03:03 PM	#1
trk411 Private Drives: 2011 335i xdrive 6MT Join Date: Oct 2011 Location: Southwestern PA Posts: 58 iTrader: (0)	N55 JB Stage 1 Question... Hey guys, So, I finally got the USB cable to make some adjustments to the stage 1. Now, my understanding was that it came preset with something along the lines of 2.5 or 2.75 boost over stock. However, when I connected mine, the figure was 3.5 . Now, I did take it up to 4.25 just to see what it feels like. Anyone have any info as to why it may have been 3.5? Not complaining because the car feels great - just curious. Any info appreciated.
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10-06-2012, 03:36 PM	#2
Slops Major General Drives: 2011 E90 335i Xdrive Join Date: Jan 2011 Location: Oxford Posts: 5,354 iTrader: (1)	I didn't know you could change anything with the jb3 stage1

10-06-2012, 03:40 PM	#3
trk411 Private Drives: 2011 335i xdrive 6MT Join Date: Oct 2011 Location: Southwestern PA Posts: 58 iTrader: (0)	Yeah, you can download the interface to a laptop and connect to the JB. Can up the boost if so desired.

10-07-2012, 08:06 AM	#5
trk411 Private Drives: 2011 335i xdrive 6MT Join Date: Oct 2011 Location: Southwestern PA Posts: 58 iTrader: (0)	Thanks for the reply. I guess because I read so many other threads about people bumping the boost up with the stage 1 that I figured it would be ok. In fact, I think I read that some people were running +5 or 6 with Stage 1 without incident (correct octane of course). I know every situation is different, but should I bump it back down to 3.5? I always run 93. I haven't taken the car out yet with the +4.25 setting yet, but if there might be issues I'll take it back down to 3.5. Any thoughts?

10-07-2012, 07:37 PM	#6
Swerd430 Private Drives: 2011 E90 335XI M Package Join Date: Feb 2011 Location: CT Posts: 65 iTrader: (0)	I run +5 with 93. The only other thing I have done is a drop in K&N. No problems at all. My buddy works at the dealer and I never have any codes. Happy tuning.

10-08-2012, 03:13 PM	#7
Charleston335 First Lieutenant Drives: 2012 Msport 135i convertible Join Date: Jul 2010 Location: Charleston, SC Posts: 326 iTrader: (1)	Did you guys feel a nice bump in performance going from 3.5lbs to a higher setting? I just ordered my USB cable to do that since the weather is getting colder and I run 93 octane. Also can you quickly explain how to do it, do I hook it up to the laptop while chip is on?

10-08-2012, 08:15 PM	#8
trk411 Private Drives: 2011 335i xdrive 6MT Join Date: Oct 2011 Location: Southwestern PA Posts: 58 iTrader: (0)	I was able to drive the car a good bit today with the +4.25 setting. It is definitely more noticeable than 3.5, especially with torque. I got on it pretty hard with no CEL or limp mode. You can find directions for hooking it up here: http://www.n54tech.com/forums/showthread.php?t=7992

10-09-2012, 08:36 AM	#9
Swerd430 Private Drives: 2011 E90 335XI M Package Join Date: Feb 2011 Location: CT Posts: 65 iTrader: (0)	Definitely a nice bump from 3.5 to 5. Just look at the link that trk posted above for instructions.

10-09-2012, 11:00 AM	#10
swifty Captain Drives: e92 335i Mineral white Join Date: Aug 2008 Location: canada Posts: 779 iTrader: (1)	Hey Op, is your stage 1 the same as the following? http://burgertuning.com/N55_Jb_BMW_P...nce_Tuner.html

10-09-2012, 11:55 AM	#11
trk411 Private Drives: 2011 335i xdrive 6MT Join Date: Oct 2011 Location: Southwestern PA Posts: 58 iTrader: (0)	Yup, that's it.

10-09-2012, 12:35 PM	#12
swifty Captain Drives: e92 335i Mineral white Join Date: Aug 2008 Location: canada Posts: 779 iTrader: (1)	Thanks OP but I don't see an option for USB? What can you do with the USB other than change the boost? Also, my car just got updated to the newest DME software. Is there anything to worry about installing this?

10-09-2012, 12:46 PM	#13
trk411 Private Drives: 2011 335i xdrive 6MT Join Date: Oct 2011 Location: Southwestern PA Posts: 58 iTrader: (0)	You just order the USB cable separately. One end to your laptop, the other to the tune. Not sure about what other settings can be tweaked, if any. From what I read, the tune should be fine with the newest DME update, but someone correct me if I'm wrong.

10-10-2012, 09:13 AM	#14
Charleston335 First Lieutenant Drives: 2012 Msport 135i convertible Join Date: Jul 2010 Location: Charleston, SC Posts: 326 iTrader: (1)	Thanks, I pushed it up to 4.5 last night (cold weather) and I was able to spin the tires hard in 1st gear which I wasn't really able to do at 3.5 psi. Def feels more aggressive