Bad Jb4 dyno results but car seems fine? Please someone help! - Page 2 - BMW 3-Series (E90 E92) Forum

eyim1988 · 12-08-2012, 02:12 AM

your jb is working fine. Im just saying your boost is low compared to mine haha.. I would help but i live in cali

.

e87fan89 · 12-08-2012, 02:47 PM

I'm gonna run map 2 than cuz map 5 I don't trust and with my AA charge pipe and downpipe I should be fine on map 2 with 93 octane

e87fan89 · 12-08-2012, 02:47 PM

My car feels much faster in map 2 than on stock. I need a dyno mod apparently anyone sell one?

Goofyguy · 12-08-2012, 02:57 PM

First Map5 allow for more boost over Map 2 but you have to run the car a few times to make Map 5 to learn whats best for your situation. Almost all cases you will have more boost than Map2 unless there is something wrong. Again you cant just switch to map 5 and expect it to boost higher, its a learning mode so you have to teach it. Few full throttle runs and it will adjust accordingly.

As for the Dyno, you sure you didnt have traction control on, as in you held the button for 5 seconds to shut the system down? As well you were up to full temp that lets the JB4 do its job, until 160 degrees on the oil you get no more power than stock. Perhaps even less.

We need to see the logs.

e87fan89 · 12-08-2012, 04:11 PM

Oil temps were fine and traction was 100% off. On the street my car boosts to 15 on the dyno with map 2 my car won't boost over 7psi no matter what gear no matter what it just wont do it. This has to be an issue with the jb conflicting with my Ecu on the dyno. Otherwise I wouldn't feel the difference on the street

Mike@N54Tuning.com · 12-08-2012, 10:24 PM

You'll never know since you didn't log your dyno runs. Going forward a good first step is to do the N55 ISO firmware and a datalog to ensure it's running properly now.

Mike

e87fan89 · 12-08-2012, 10:31 PM

I think my car isn't detecting enough load on the dyno to allow for more boost. Plus my car is a 2013 n55 135 so who knows what bmw changed. Maybe something with the way the car detects load? That's what a mechanic just told

e87fan89 · 12-09-2012, 02:07 AM

What do you guys think about that?

e87fan89 · 12-09-2012, 02:55 PM

Just wana keep this bumped as I I'd like people's input still

e87fan89 · 12-09-2012, 11:32 PM

anyone have any thoughts on what that mechanic said about load?

e87fan89 · 12-10-2012, 11:55 PM

Found out the 2013 1 series has a GPS detector thing In all four wheels if the car isn't moving the car can't dyno I should say if the GPS knows your car isn't moving also.....I dunno if this happens without idrive or nt as I have idrive but thought I'd let u guys know

geared · 12-11-2012, 06:46 PM

2012 here....i dynoed today - think i have the same issue.

e87fan89 · 12-12-2012, 02:21 AM

It could be in late 2012 also I would think its most likely the same issue

divisionbell77 · 12-12-2012, 06:35 AM

None of what you are saying makes any sense and all have completely disagreed with you and told you the same things.

1) you need logs

2) traction control or something else was most likely the cause.

Andrew@ActiveAutowerke · 12-12-2012, 09:48 AM

Quote:

Originally Posted by geared

2012 here....i dynoed today - think i have the same issue.

Told you. At least you are not alone.

divisionbell77 · 12-12-2012, 02:10 PM

Quote:

Originally Posted by Andrew@ActiveAutowerke

Told you. At least you are not alone.

He was using map 5 and on a mustang dyno. He has posted over at terry's forum.

Andrew@ActiveAutowerke · 12-12-2012, 04:22 PM

Quote:

Originally Posted by divisionbell77

He was using map 5 and on a mustang dyno. He has posted over at terry's forum.

He went to two different dynos with the same issue. I told him to run various maps to see if it would run the correct boost and it did not.

I also spoke with someone last night and they have the same problem.

I believe it has to do with the ecu noticing the front wheels are not spinning.

Abear · 12-12-2012, 04:44 PM

If the car is running fine off the dyno, just take it to the track to see where you stand. That 1320 feet will tell you everything your need to know.

ragingpanda · 12-12-2012, 11:57 PM

Quote:

Originally Posted by Abear

If the car is running fine off the dyno, just take it to the track to see where you stand. That 1320 feet will tell you everything your need to know.

+1

Preach.

12-08-2012, 02:12 AM	#23
eyim1988 Major Drives: 2011 335i coupe Join Date: Feb 2011 Location: Los Angeles, CA Posts: 1,259 iTrader: (2)	your jb is working fine. Im just saying your boost is low compared to mine haha.. I would help but i live in cali . __________________ Procede v5, ER Competition FMIC, ER Chargepipe, HP Autowerks foam filter, Custom turboback exhaust, 369 whp/444 torque (no intercooler)

12-08-2012, 02:57 PM	#26
Goofyguy GoofBall Drives: 2009 E92 N54 XI Join Date: Jun 2012 Location: Tampa, FL Posts: 586 iTrader: (1)	First Map5 allow for more boost over Map 2 but you have to run the car a few times to make Map 5 to learn whats best for your situation. Almost all cases you will have more boost than Map2 unless there is something wrong. Again you cant just switch to map 5 and expect it to boost higher, its a learning mode so you have to teach it. Few full throttle runs and it will adjust accordingly. As for the Dyno, you sure you didnt have traction control on, as in you held the button for 5 seconds to shut the system down? As well you were up to full temp that lets the JB4 do its job, until 160 degrees on the oil you get no more power than stock. Perhaps even less. We need to see the logs. __________________

12-08-2012, 10:24 PM	#28
Mike@N54Tuning.com BimmerPost Supporting Vendor Drives: 07335i Join Date: Dec 2008 Location: Earth Posts: 12,353 iTrader: (78)	You'll never know since you didn't log your dyno runs. Going forward a good first step is to do the N55 ISO firmware and a datalog to ensure it's running properly now. Mike __________________ Lowest Price GUARANTEED on ALL PRODUCTS!! JB4 G5 On Sale - FREE Shipping Click Me - NEW JB4(N55) & DCI's $95.00 NEW F30-328 N20 Tune(Stage1) BMS Oil Catch Can (On Sale)

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12-08-2012, 02:47 PM	#24
e87fan89 Private First Class Drives: 2013 135i M sport Join Date: Dec 2010 Location: N/A Posts: 140 iTrader: (0)	I'm gonna run map 2 than cuz map 5 I don't trust and with my AA charge pipe and downpipe I should be fine on map 2 with 93 octane

12-08-2012, 04:11 PM	#27
e87fan89 Private First Class Drives: 2013 135i M sport Join Date: Dec 2010 Location: N/A Posts: 140 iTrader: (0)	Oil temps were fine and traction was 100% off. On the street my car boosts to 15 on the dyno with map 2 my car won't boost over 7psi no matter what gear no matter what it just wont do it. This has to be an issue with the jb conflicting with my Ecu on the dyno. Otherwise I wouldn't feel the difference on the street

12-08-2012, 10:31 PM	#29
e87fan89 Private First Class Drives: 2013 135i M sport Join Date: Dec 2010 Location: N/A Posts: 140 iTrader: (0)	I think my car isn't detecting enough load on the dyno to allow for more boost. Plus my car is a 2013 n55 135 so who knows what bmw changed. Maybe something with the way the car detects load? That's what a mechanic just told

12-09-2012, 02:07 AM	#30
e87fan89 Private First Class Drives: 2013 135i M sport Join Date: Dec 2010 Location: N/A Posts: 140 iTrader: (0)	What do you guys think about that?

12-09-2012, 02:55 PM	#31
e87fan89 Private First Class Drives: 2013 135i M sport Join Date: Dec 2010 Location: N/A Posts: 140 iTrader: (0)	Just wana keep this bumped as I I'd like people's input still

12-09-2012, 11:32 PM	#32
e87fan89 Private First Class Drives: 2013 135i M sport Join Date: Dec 2010 Location: N/A Posts: 140 iTrader: (0)	anyone have any thoughts on what that mechanic said about load?

12-10-2012, 11:55 PM	#33
e87fan89 Private First Class Drives: 2013 135i M sport Join Date: Dec 2010 Location: N/A Posts: 140 iTrader: (0)	Found out the 2013 1 series has a GPS detector thing In all four wheels if the car isn't moving the car can't dyno I should say if the GPS knows your car isn't moving also.....I dunno if this happens without idrive or nt as I have idrive but thought I'd let u guys know

12-11-2012, 06:46 PM	#34
geared Lieutenant Drives: No car Join Date: Apr 2012 Location: jupiter, fl Posts: 433 iTrader: (1)	2012 here....i dynoed today - think i have the same issue.

12-12-2012, 02:21 AM	#35
e87fan89 Private First Class Drives: 2013 135i M sport Join Date: Dec 2010 Location: N/A Posts: 140 iTrader: (0)	It could be in late 2012 also I would think its most likely the same issue

12-12-2012, 06:35 AM	#36
divisionbell77 Second Lieutenant Drives: 2011 335i XDrive Coupe Join Date: Mar 2012 Location: Ohio Posts: 294 iTrader: (0)	None of what you are saying makes any sense and all have completely disagreed with you and told you the same things. 1) you need logs 2) traction control or something else was most likely the cause.

12-12-2012, 04:44 PM	#40
Abear Private First Class Drives: 2011 335i Join Date: Aug 2011 Location: Houston Posts: 129 iTrader: (2)	If the car is running fine off the dyno, just take it to the track to see where you stand. That 1320 feet will tell you everything your need to know.