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Default 03-02-2016, 11:43 PM

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Originally Posted by Steve @ BMS/Fuel-It!
If the wastegates aren't functioning properly or are sticking, it could cause over/under boost issues.

Post a picture of both sides of your JB4 board.
The dealership checked the actuators but not sure if they checked to see if the wastegates were sticking. There was no vacuum being sent to the actuator so would wastegates sticking result in no vacuum?


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Default 03-03-2016, 12:03 AM

Quote:
Originally Posted by Steve @ BMS/Fuel-It!
If the wastegates aren't functioning properly or are sticking, it could cause over/under boost issues.

Post a picture of both sides of your JB4 board.
The dealership checked the actuators but not sure if they checked to see if the wastegates were sticking. There was no vacuum being sent to the actuator so would wastegates sticking result in no vacuum?
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Default 07-03-2016, 10:47 PM

Hi, can someone check my latest logs? Running BMS Pump backend flash, 1 step colder spark plugs, 3" charge pipe, 3" ****** ***, ETS intercooler, on JB4 map5. Latest ISO file and interface. I dropped menu 12 to 2600 because I was having some 30FE error codes (overboost).

See attached excel. 3 pulls from 3rd gear. Getting about 14.5 boost.
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File Type: csv 160703_2229.csv (30.0 KB, 56 views)


2008 BMW 335i | JB4 G5 | BMS Pump Flash | 3" n54Tuning *** | 3" ER Charge Pipe | 5" ETS FMIC

Last edited by bmwsf; 07-04-2016 at 09:38 AM..
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Default 07-07-2016, 07:03 PM

Bump


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Default 07-08-2016, 08:34 AM

You've got quite a few timing corrections so boost targets aren't going to increase and may decrease over time. Ultimately you'll probably need more octane if your plugs are good. What did you gap them to?



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Default 07-09-2016, 09:48 AM

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Originally Posted by Steve @ BMS/Fuel-It!
You've got quite a few timing corrections so boost targets aren't going to increase and may decrease over time. Ultimately you'll probably need more octane if your plugs are good. What did you gap them to?
I had the spark plugs replaced 8k miles ago and gapped to 0.56mm (at least that's what I asked the mechanic to do). Is there a way to know which cylinders may be the problem? I had injector #5 replaced, could that be the issue?

I now mixed 4 gallons of 100 octane Sunoco race fuel with 91 octane. I believe the mixture is about 93-94 octane. I am getting a little more boost (15 psi). How does the log look?
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File Type: csv 160710_1018.csv (21.1 KB, 53 views)


2008 BMW 335i | JB4 G5 | BMS Pump Flash | 3" n54Tuning *** | 3" ER Charge Pipe | 5" ETS FMIC

Last edited by bmwsf; 07-10-2016 at 10:21 AM..
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Default 07-10-2016, 08:50 PM

Timing is looking better, so I'd say it's more than likely octane deficiency. More octane



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Default 07-12-2016, 08:00 AM

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Originally Posted by Steve @ BMS/Fuel-It!
Timing is looking better, so I'd say it's more than likely octane deficiency. More octane
I'm a little confused. If I out more octane then won't that be a BMS race flash? I thought 91 octane was appropriate for map 1 or 5 and BMS pump flash was appropriate. 93 octane would be for map 2 or 5 and BMS Pump flash. Am I better off using map 1 or 2 instead of map 5? Anything else I can do to improve timing?

Also, which is better: race gas or e85? Race gas gets expensive.


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Default 07-12-2016, 10:12 AM

Most run E85, cheaper.

Not all 91 is created equal. Ours is horrible! I'd suggest sticking with map 1 on 91 octane.



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Default 07-12-2016, 12:05 PM

so basically the intercooler, ***, chargepipe upgrades don't get me past map 1? I was hoping those changes would let me consistently use map 2 levels.

I could get some e85 (a 15 min. drive) but it seems that I need to be pushing 40% E85 for it to be safe for map 2 (based on my timing corrections) even after putting in new cold step spark plugs. Is it normal to have to add so much E85 or is there something fundamentally wrong with my car?


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Default 07-13-2016, 05:47 AM

Map 2 typically needs more octane as mentioned in the JB4 notes.

Probably more related to fuel than the car. If running pump gas, I'd stick with stock plugs.



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Default Fuel pump? - 12-18-2016, 01:01 PM

I can definitely put more e85. I'll put as much as 40% and keep running the pump BEF. Do you think a fuel pump is needed?

I am also thinking about installing the turbo vrsf inlets with dci. I have to replace the oil housing gasket so I'm only charged 2.5 hours of labor for the inlets instead of 5 hours. I'd like to be able to run more horsepower.., up to around 19psi boost instead of the 14-15psi I'm running now.

Do I need the N20 3.5 tmap sensor?

Do I need a better diverter valve or BOV?

Will the MHD Terry's pump BEF be better than the bimmerboost pump BEF?

I have ***, charge pipe and fmic installed.


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Default 12-19-2016, 11:07 AM

I'd recommend switching to the E85 flash if you are going to run E40.

LPFP may need upgraded but everything else should be fine for a 19psi target.



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Default 12-19-2016, 06:57 PM

Quote:
Originally Posted by Steve @ BMS/Fuel-It!
I'd recommend switching to the E85 flash if you are going to run E40.

LPFP may need upgraded but everything else should be fine for a 19psi target.
Thanks Steve. I ran a few logs today with about 6-6.5 gallons of E85 (so 40%). My first log was on map 1, second log on map 2, and then 3 logs on map 5. All using BMS PUMP BEF. In map 5 I get around 15-16psi but in the second run there was a drop to 8psi, do you know what happened (picture attached)?

If timing is still a problem and I'm using so much octane, could it be that the 1 step colder NGK spark plugs were not gapped right? They have 10k miles now. Or do I need an LPFP upgrade?

Do you think I'll be able to hit 19psi after inlets and DCI?
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Attached Files
File Type: csv 161219_1522_map1.csv (20.8 KB, 48 views)
File Type: csv 161219_1525_map2.csv (12.9 KB, 48 views)
File Type: csv 161219_1548_map5_1st_run.csv (32.8 KB, 51 views)
File Type: csv 161219_1601_map5_2nd_run.csv (18.2 KB, 45 views)
File Type: csv 161219_1634_map5_3rd_run.csv (20.8 KB, 47 views)


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Default 12-20-2016, 10:21 AM

Trims are maxing out, you'll need to switch to the E85 flash.

On the second map 5 log you got kicked to map 4 because you ran lean.



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Default 05-12-2017, 03:14 PM

Quote:
Originally Posted by Steve @ BMS/Fuel-It!
Trims are maxing out, you'll need to switch to the E85 flash.

On the second map 5 log you got kicked to map 4 because you ran lean.
Is this better? I now have RB inlets and running RACE flash and about 4 gallons of E85.

In the first log in map 5 things seemed to be working well. In the second log in 4th gear the map defaulted to 4. In the third log I think things are getting back to normal.

Do you know if in the second log I defaulted to map 4 because I exceeded the BoostSafety of 18psi? Should I increase the BoostSafety?

Mods: ETS FMIC, ER charge pipe, BMS DCI, RB inlets and PVC and cap, 3" *********
Attached Files
File Type: csv 2017-05-12 11_14_12.csv (88.0 KB, 40 views)
File Type: csv 2017-05-12 11_19_59.csv (4.6 KB, 38 views)
File Type: csv 2017-05-12 11_30_03.csv (91.8 KB, 37 views)


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Default 05-12-2017, 09:56 PM

You overboosted because FF was too high. It then learned down but yes you also need to raise your boost safety limit.



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Default 05-13-2017, 09:04 AM

Quote:
Originally Posted by Steve @ BMS/Fuel-It!
You overboosted because FF was too high. It then learned down but yes you also need to raise your boost safety limit.

Thanks! I'll raise the boost safety to 20. Do you think I can keep the race flash if I go back to 91 only octane?


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Default 05-13-2017, 12:13 PM

I'd suggesting going back to the pump flash.



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