[gpdriver17]

Originally Posted by Drew1204

What is the ratio of the MS101 and 91 you use?

We have (R+M)/2 100 and 104 (I think R+M might be octane rating?) in Arizona which is equal to Research 105 and 110:

https://www.sunocoracefuels.com/fuel/260-gt

https://www.sunocoracefuels.com/fuel/260-gt-plus

Is research 110 higher than VP109?

Could you also say run map 6 on the 100 octane, or would you need the 104?

You can run map 6 on 91 if you set all the values to 0. If you're running any more than 22psi you should probably do the math and get it to around 100 octane.

[Bmwusabmw]

Originally Posted by Hockeytyme

Map2 is an additive map not absolute. I think seeing the csv would help so we can see the DME target.

Right I can see his boost, but i cant see the DME target and how much of the target he is reaching.

In the lower gears I see trims in the low 40s on fairly low boost, i’m more wondering if he is very under the +5 target

[Hockeytyme]

Originally Posted by Drew1204

What is the ratio of the MS101 and 91 you use?

We have (R+M)/2 100 and 104 (I think R+M might be octane rating?) in Arizona which is equal to Research 105 and 110:

https://www.sunocoracefuels.com/fuel/260-gt

https://www.sunocoracefuels.com/fuel/260-gt-plus

Is research 110 higher than VP109?

Could you also say run map 6 on the 100 octane, or would you need the 104?

EDIT: just re-read your post saying "Anything higher than map2 you need MS109" So then the 260 GT Plus is for anything higher than map 2...?

For map2 I try to be around 98octane minimum to be safe.

For map6 you can run that same 98 but I wouldn't go any higher than 5lbs of boost. Also, be careful with map6. You need to start slow and work your way up and have logs looked at before you go nuts. Map6 boost is completely dependant on what you set it at so go with caution and the help of Terry or someone at BMS. You will need to make changes to other things besides the additive boost targets.

I'm not familiar with the Sonoco Fuels and how they compare to VP unfortunately. I have a VP distributer right by my house so I don't bother with Sonoco

[Bmwusabmw]

Originally Posted by Hockeytyme

For map2 I try to be around 98octane minimum to be safe.

For map6 you can run that same 98 but I wouldn't go any higher than 5lbs of boost. Also, be careful with map6. You need to start slow and work your way up and have logs looked at before you go nuts. Map6 boost is completely dependant on what you set it at so go with caution and the help of Terry or someone at BMS. You will need to make changes to other things besides the additive boost targets.

I'm not familiar with the Sonoco Fuels and how they compare to VP unfortunately. I have a VP distributer right by my house so I don't bother with Sonoco

If he is going with Sun GT260 is his best bet my car loves it, street legal and sold at the pump by me. The GT260 plus uses MMT

[dk79]

Car does not throw any codes at all and drives absolutely fine, smooth. Something is wrong with it, that with tune it's not making enough power.
How do I convince bmw to change the injectors or plugs?

[Bmwusabmw]

Originally Posted by dk79

Car does not throw any codes at all and drives absolutely fine, smooth. Something is wrong with it.

Add the CSV if you can

[Hockeytyme]

Originally Posted by dk79

Car does not throw any codes at all and drives absolutely fine, smooth. Something is wrong with it, that with tune it's not making enough power.

It could be a simple fix in the firmware or your wiring. Just email those guys at BMS and send them your logs. They are very helpful!

[dk79]

Can I post csv files here or n54tech?

[Bmwusabmw]

Just noticed this but how old is your dragy app? Its not showing DA. Could dragy need an update here too. Have you been updating the JB4 firmware?

[Bmwusabmw]

Originally Posted by dk79

Can I post csv files here or n54tech?

I would post them there for sure, terry and team will read them too

[dk79]

Originally Posted by Hockeytyme

It could be a simple fix in the firmware or your wiring. Just email those guys at BMS and send them your logs. They are very helpful!

Already sent them csv logs.

[Bmwusabmw]

Originally Posted by dk79

Already sent them csv logs.

How is your dragy not showing DA, did you turn that off or is your app not updated?

[Bmwusabmw]

Originally Posted by dk79

Dme target was default per jb4 map not altered.
Tried but can't load the csv file.

DME target is what the ECU would call for under stock condition as it doesnt know the JB4 is even there...call it the OEM boost profile if you’d like, the JB4 on map 2 then adds to that number (additive boost) to get your total delivered boost.

Example

If DME target was 18 psi, JB4 on map 2 says add 5 psi for a total of 23psi. This is helpful to know if you are under the additive target, and if you are there are ways to fix that with duty bias.

DME target is variable based on engine parameters and can range from 16-22psi.

[dk79]

Originally Posted by Bmwusabmw

How is your dragy not showing DA, did you turn that off or is your app not updated?

Dragy I guess auto updates.
Will see why it doesn't show da
Da was about 1200

[dk79]

Is there a possibility that something is wrong with jb4 unit itself?

[Fuel-It!]

Originally Posted by dk79

Is there a possibility that something is wrong with jb4 unit itself?

Not from what you're describing. Sounds like you just need to crank up the power a little more and get the launch 60' down. 128mph traps are not bad but you should be able to get closer to 130mph.

[dk79]

Terry reviewed the csv log files and has asked to increase duty bias by 20 points across the board, and re log on map 2.

[Bmwusabmw]

Originally Posted by dk79

Terry reviewed the csv log files and has asked to increase duty bias by 20 points across the board, and re log on map 2.

As suspected under boosting..this is why the DME target vs boost is helpful. - Did you ever check to see how far under the additive target you were?

You should spend an hour or so learning the basics of reading the logs and getting an understanding of what each parameters means. It can save you a lot of time and hassle if you start to think you are having a problem or just want to optimize you maps.

[Hockeytyme]

Originally Posted by Bmwusabmw

As suspected under boosting..this is why the DME target vs boost is helpful. - Did you ever check to see how far under the additive target you were?

You should spend an hour or so learning the basics of reading the logs and getting an understanding of what each parameters means. It can save you a lot of time and hassle if you start to think you are having a problem or just want to optimize you maps.

Good points and just to add for OP.

Column "C" is the DME requested target.
Column "D" is the Target. This is what JB4 is adding to the cars DME
Column "E" is the actual Boost that the car is getting.

[dk79]

Originally Posted by Bmwusabmw

As suspected under boosting..this is why the DME target vs boost is helpful. - Did you ever check to see how far under the additive target you were?

You should spend an hour or so learning the basics of reading the logs and getting an understanding of what each parameters means. It can save you a lot of time and hassle if you start to think you are having a problem or just want to optimize you maps.

Yes please send me some links, how to.

[dk79]

Car still heavily under targeting per csv logs, BMS asked to increase duty bias by another 20 points across the board.
Will update soon.

[dk79]

Terry at BMS is superb man, super helpful prompt replies.
Stellar service by burgertining, cuddos to them.