Jb4 map 5 low boost

Wescuddles · 09-11-2013, 12:06 PM

NO LOGS UNTIL SATURDAY.
Thought I'd clear that up because I know what everyone is going to say. I'm aware logs will help determine my issue I just want to post a thread before I forget. Can't log until Saturday as I'm out of town for work.
Car has VRSF dp's and IC, bms dci and jb4 g5 iso. When I put on map 5 and do a few 3rf gear wot runs to adapt boost will drop to max 11-12 psi. A few times I have had a misfire when boost is around 15-16 when you first turn on map 5. Now I've read before that chevron 94 (Canadian gas) has caused timing pulls for some people. I use this gas. The only other gas locally worth using is shell 91. I don't have access to e85. I haven't pulled codes but will Saturday too.
For now I'm just curious if anyone else has had issues with chevron 94? I'm suspicious it's a coil as my plugs were done 20k KMs ago but if people have trouble with chev 94 ill jump over to shell and try that.
TIA.

Dmacc · 09-11-2013, 12:16 PM

Quote:

Originally Posted by Wescuddles

NO LOGS UNTIL SATURDAY.
Thought I'd clear that up because I know what everyone is going to say. I'm aware logs will help determine my issue I just want to post a thread before I forget. Can't log until Saturday as I'm out of town for work.
Car has VRSF dp's and IC, bms dci and jb4 g5 iso. When I put on map 5 and do a few 3rf gear wot runs to adapt boost will drop to max 11-12 psi. A few times I have had a misfire when boost is around 15-16 when you first turn on map 5. Now I've read before that chevron 94 (Canadian gas) has caused timing pulls for some people. I use this gas. The only other gas locally worth using is shell 91. I don't have access to e85. I haven't pulled codes but will Saturday too.
For now I'm just curious if anyone else has had issues with chevron 94? I'm suspicious it's a coil as my plugs were done 20k KMs ago but if people have trouble with chev 94 ill jump over to shell and try that.
TIA.

If you suspect it could be the gas, which I agree could be a factor in your boost and timing, I'd try switching to shell 91 first and see if anything improves, if it does not, you can eliminate gas as a factor.

When were your plugs last changed?

Wescuddles · 09-11-2013, 12:17 PM

Quote:

Originally Posted by Dmacc

Quote:

Originally Posted by Wescuddles

NO LOGS UNTIL SATURDAY.
Thought I'd clear that up because I know what everyone is going to say. I'm aware logs will help determine my issue I just want to post a thread before I forget. Can't log until Saturday as I'm out of town for work.
Car has VRSF dp's and IC, bms dci and jb4 g5 iso. When I put on map 5 and do a few 3rf gear wot runs to adapt boost will drop to max 11-12 psi. A few times I have had a misfire when boost is around 15-16 when you first turn on map 5. Now I've read before that chevron 94 (Canadian gas) has caused timing pulls for some people. I use this gas. The only other gas locally worth using is shell 91. I don't have access to e85. I haven't pulled codes but will Saturday too.
For now I'm just curious if anyone else has had issues with chevron 94? I'm suspicious it's a coil as my plugs were done 20k KMs ago but if people have trouble with chev 94 ill jump over to shell and try that.
TIA.

If you suspect it could be the gas, which I agree could be a factor in your boost and timing, I'd try switching to shell 91 first and see if anything improves, if it does not, you can eliminate gas as a factor.

Roger that. Ill try to get logs with both gas as I've still got a 1/4 tank of 94. What should I show on the logs?

Jeff@TopGearSolutions · 09-11-2013, 12:39 PM

Quote:

Originally Posted by Dmacc

If you suspect it could be the gas, which I agree could be a factor in your boost and timing, I'd try switching to shell 91 first and see if anything improves, if it does not, you can eliminate gas as a factor.

When were your plugs last changed?

12,000 miles ago

Quote:

Originally Posted by Wescuddles

Roger that. Ill try to get logs with both gas as I've still got a 1/4 tank of 94. What should I show on the logs?

Throttle
RPM
Boost
Intake Air Temp
Fuel Trim
Wastegate Duty Cycle
Ignition Advance

Wescuddles · 09-11-2013, 12:42 PM

Quote:

Originally Posted by Jeff@TopGearSolutions

Quote:

Originally Posted by Dmacc

If you suspect it could be the gas, which I agree could be a factor in your boost and timing, I'd try switching to shell 91 first and see if anything improves, if it does not, you can eliminate gas as a factor.

When were your plugs last changed?

12,000 miles ago

Quote:

Originally Posted by Wescuddles

Roger that. Ill try to get logs with both gas as I've still got a 1/4 tank of 94. What should I show on the logs?

Throttle
RPM
Boost
Intake Air Temp
Fuel Trim
Wastegate Duty Cycle
Ignition Advance

Thanks Jeff! Well now I'm all set ill have the logs done Saturday

Infamy · 09-11-2013, 12:52 PM

Throw a can of oct booster in. See if any difference.

Dmacc · 09-11-2013, 01:11 PM

Sorry didn't see the last bit at the end, I'm a dunce today

JYohay · 09-11-2013, 02:38 PM

i had this exact issue for a while.
my spark plugs and injectors were changed not too long ago but my coilpacks were not.
i also could not run map 7 at all without misfires.
just swapped coilpacks and im back up to 15+ PSI and can run map 7 with e85 no problem.
Id swap out coilpacks and go from there

Wescuddles · 10-29-2013, 08:03 PM

logged the car today and posted up to datazap. not sure if I did it right it's my first time... here's the link incase the png isn't showing info properly. car seems to be running good with e85. let me know what you guys think!

fyi: running 25% e85 75% 93, full catless straight exhaust, dci, 7" fmic, jb4 g5 iso, cp and bov.

http://www.datazap.me/u/wescuddles/o...4-6-9-11-13-14

Wescuddles · 10-29-2013, 09:54 PM

Anyone?

longliven54 · 10-30-2013, 03:46 PM

had problems with Chev 94 Oct, esso 91 as well. I am in Victoria BC, and have been getting best performance from husky 94 Oct(it has 10% ethanol).
shell n petrocan 91 are also much better than esso n chevron.

enrita · 10-30-2013, 04:00 PM

Try log only Wot 3rd gear....

Wescuddles · 10-30-2013, 04:05 PM

Quote:

Originally Posted by enrita

Try log only Wot 3rd gear....

It was all 3rd gear wot didn't realize the log didn't just show the wot runs. I have it sorted on another forum.

bhanner95 · 03-26-2015, 12:05 PM

Care to share your findings? My car exhibits the same behavior

09-11-2013, 12:06 PM	#1
Wescuddles Captain 33 Rep 644 Posts Drives: bsm 135i Join Date: Apr 2012 Location: Vancouver iTrader: (0)	Jb4 map 5 low boost NO LOGS UNTIL SATURDAY. Thought I'd clear that up because I know what everyone is going to say. I'm aware logs will help determine my issue I just want to post a thread before I forget. Can't log until Saturday as I'm out of town for work. Car has VRSF dp's and IC, bms dci and jb4 g5 iso. When I put on map 5 and do a few 3rf gear wot runs to adapt boost will drop to max 11-12 psi. A few times I have had a misfire when boost is around 15-16 when you first turn on map 5. Now I've read before that chevron 94 (Canadian gas) has caused timing pulls for some people. I use this gas. The only other gas locally worth using is shell 91. I don't have access to e85. I haven't pulled codes but will Saturday too. For now I'm just curious if anyone else has had issues with chevron 94? I'm suspicious it's a coil as my plugs were done 20k KMs ago but if people have trouble with chev 94 ill jump over to shell and try that. TIA. __________________ BSM 2008 135i -VRSF 7" IC -VRSF DP's -n55 mids -BERK race -ER CP -TIAL BOV -BMS DCI -JB4 G5 ISO -ST coils -STOPTECH slotted rotors & pads -SLeK lip Follow me on instagram: wescuddles
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09-11-2013, 12:52 PM	#6
Infamy underground 69 Rep 333 Posts Drives: alpine white 335 E92 Join Date: Aug 2013 Location: central Jersey iTrader: (1) Garage List 2010 BMW 335i [9.66]	Throw a can of oct booster in. See if any difference.
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09-11-2013, 01:11 PM	#7
Dmacc Colonel 208 Rep 2,799 Posts Drives: 2011 BMW 1M Join Date: Mar 2010 Location: So Cal iTrader: (1)	Sorry didn't see the last bit at the end, I'm a dunce today __________________ thanks to MGallop
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09-11-2013, 02:38 PM	#8
JYohay Banned 48 Rep 2,009 Posts Drives: 2011 X5 Join Date: Mar 2012 Location: NY iTrader: (3)	i had this exact issue for a while. my spark plugs and injectors were changed not too long ago but my coilpacks were not. i also could not run map 7 at all without misfires. just swapped coilpacks and im back up to 15+ PSI and can run map 7 with e85 no problem. Id swap out coilpacks and go from there
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10-29-2013, 08:03 PM	#9
Wescuddles Captain 33 Rep 644 Posts Drives: bsm 135i Join Date: Apr 2012 Location: Vancouver iTrader: (0)	logged the car today and posted up to datazap. not sure if I did it right it's my first time... here's the link incase the png isn't showing info properly. car seems to be running good with e85. let me know what you guys think! fyi: running 25% e85 75% 93, full catless straight exhaust, dci, 7" fmic, jb4 g5 iso, cp and bov. http://www.datazap.me/u/wescuddles/o...4-6-9-11-13-14 Attached Images
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10-29-2013, 09:54 PM	#10
Wescuddles Captain 33 Rep 644 Posts Drives: bsm 135i Join Date: Apr 2012 Location: Vancouver iTrader: (0)	Anyone? __________________ BSM 2008 135i -VRSF 7" IC -VRSF DP's -n55 mids -BERK race -ER CP -TIAL BOV -BMS DCI -JB4 G5 ISO -ST coils -STOPTECH slotted rotors & pads -SLeK lip Follow me on instagram: wescuddles
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10-30-2013, 03:46 PM	#11
longliven54 Lieutenant 14 Rep 455 Posts Drives: 2007 335i e90 auto Join Date: Jan 2011 Location: victoria iTrader: (6)	had problems with Chev 94 Oct, esso 91 as well. I am in Victoria BC, and have been getting best performance from husky 94 Oct(it has 10% ethanol). shell n petrocan 91 are also much better than esso n chevron. __________________ JB4 G5 / VRSF IC / STETT CAI / GREDDY / custom exhaust / iRotora cross drilled rotots / snow stage 3 meth / 19" iForged senekas / upgraded speakers n CF woofer box / M3 bits/ DINAN camber plates/ KONI/ megan racing toe arm/ supreme power lowering perch
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10-30-2013, 04:00 PM	#12
enrita Major General 161 Rep 7,377 Posts Drives: 335i - Big turbos Join Date: Sep 2008 Location: Italian in Sweden iTrader: (0)	Try log only Wot 3rd gear....
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03-26-2015, 12:05 PM	#14
bhanner95 New Member 21 Rep 18 Posts Drives: 2009 E92 335i Join Date: Apr 2014 Location: North Richland Hills iTrader: (0)	Care to share your findings? My car exhibits the same behavior
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