[Gregrobin]

At a high level, what's the difference between all the map versions? I made an assumption 9 was the latest and greatest/most current when I first mapped so that's what I used.

This is helpful, though it does not talk about the different versions: https://bmwtuning.co/bmw-n54-mhd-fla...sepower-gains/

[Saif2018]

Originally Posted by Gregrobin

At a high level, what's the difference between all the map versions? I made an assumption 9 was the latest and greatest/most current when I first mapped so that's what I used.

This is helpful, though it does not talk about the different versions: https://bmwtuning.co/bmw-n54-mhd-fla...sepower-gains/

The link above gives general power gains from flash tunes.

V7.1 has lower boost and timing compared to V8/V9 according to what MHD told me, it should be easier on FMIC

You can also try v9 and see of it makes any difference compared to v8, since the map versions don't cost anything extra, you might as well flash and compare, you may not even have to go 7 inch for stage 2+

[Gregrobin]

Originally Posted by Saif2018

You can also try v9 and see of it makes any difference compared to v8, since the map versions don't cost anything extra, you might as well flash and compare, you may not even have to go 7 inch for stage 2+

I was on V9 2+ when MHD told me to go to V8 2+ because of the high IAT. I just went down to V8 2. I'll do a pull soon.

[Saif2018]

Originally Posted by Gregrobin

I was on V9 2+ when MHD told me to go to V8 2+ because of the high IAT. I just went down to V8 2. I'll do a pull soon.

Ok, try 7.1 stage 2+ as well.

[JunkyardDogg]

Originally Posted by Saif2018

I mean which Index number?

Yes, check the LTFT 1 & 2 options as well before you log.

I flashed back to Stock Stage 0 and the timing corrections look worse than before!
https://datazap.me/u/junkyarddogg/lo...og=0&data=3-22

v9 Stage 1+ 93
https://datazap.me/u/junkyarddogg/lo...og=0&data=3-20

[Saif2018]

Originally Posted by JunkyardDogg

I flashed back to Stock Stage 0 and the timing corrections look worse than before!
https://datazap.me/u/junkyarddogg/lo...og=0&data=3-22

v9 Stage 1+ 93
https://datazap.me/u/junkyarddogg/lo...og=0&data=3-20

Have the plugs and coils been changed?

Using 93oct fuel?

[JunkyardDogg]

Originally Posted by Saif2018

Have the plugs and coils been changed?

Using 93oct fuel?

All of the above. Could it be possible I didn't turn off dtc? I'm thinking that could be it

[Saif2018]

Originally Posted by JunkyardDogg

All of the above. Could it be possible I didn't turn off dtc? I'm thinking that could be it

I don't think so mate, "Torque limiter active" is 0 on both logs.

Which fuel exactly are you running?

Have you tried flashing 91oct map to see if timing corrections improve?

Which Index injectors do you have?

[JunkyardDogg]

Originally Posted by Saif2018

I don't think so mate, "Torque limiter active" is 0 on both logs.

Which fuel exactly are you running?

Have you tried flashing 91oct map to see if timing corrections improve?

Which Index injectors do you have?

BP 93 and no. I figured if there are timing corrections on stock map then I don't see how a 91 map improving things. Not sure about the index of injectors.

[Saif2018]

Originally Posted by JunkyardDogg

BP 93 and no. I figured if there are timing corrections on stock map then I don't see how a 91 map improving things. Not sure about the index of injectors.

Yeah your probably right about 91oct not helping corrections,

Timing corrections can be caused by a number of things (Bad fuel quality/low Octane, IAT's, Plugs, Coils and even Injectors...

Instead of using BP 93, if you have Shell V power 93, try that, it may make a difference.

[JunkyardDogg]

Originally Posted by Saif2018

Yeah your probably right about 91oct not helping corrections,

Timing corrections can be caused by a number of things (Bad fuel quality/low Octane, IAT's, Plugs, Coils and even Injectors...

Instead of using BP 93, if you have Shell V power 93, try that, it may make a difference.

Strange, IAT's look ok, new coils/plugs. Guess i'll try Shell.

But regarding the DTC, I do recall when I logged a run when it misfired, the tires lost traction when I floored it and I remember lights were blinking on and off on the dash. Isn't that dtc? I can try pressing the button for 5 seconds and shutting it off.

[Saif2018]

Originally Posted by JunkyardDogg

Strange, IAT's look ok, new coils/plugs. Guess i'll try Shell.

But regarding the DTC, I do recall when I logged a run when it misfired, the tires lost traction when I floored it and I remember lights were blinking on and off on the dash. Isn't that dtc? I can try pressing the button for 5 seconds and shutting it off.

Yes if its blinking then DSC or DTC is on, but if its off, from my understanding Torque limiter active is 0, maybe it shows 0 when DSC is off but DTC is active.

You could try turning it off (hold it down until its fully off for a few seconds) and relog.

[WCAR]

Could someone please look at my logs and tell me where things are bad/what could be causing them? I think I've recorded them correctly.
https://datazap.me/u/wcar/log-162782...=0&data=3-4-21

[Gregrobin]

ARM has offered me a discount to upgrade from my ARM 5-in intercooler to their 7-inch one. They're also including upgraded hoses for free. Does this seem like a good price to you guys?

[Saif2018]

Originally Posted by Gregrobin

ARM has offered me a discount to upgrade from my ARM 5-in intercooler to their 7-inch one. They're also including upgraded hoses for free. Does this seem like a good price to you guys?

I don't live in the US, but that looks like a good price to me.

[Benjiman]

Hey guys, would someone have a look over my log and let me know how it looks. Still learning how to read them better. It's a second gear pull, I was unable to get a third gear pull, I will try again this week sometime.

https://datazap.me/u/benjiman/second...=3-10-13-23-26

Things I'm not sure on with my limited knowledge, does boost seem to be taking too long to build?
There's a timing correction on cylinder 5 just after it changed up to third gear and just as I let off the throttle. Is that ok as it was when I let off throttle? Cylinder 5 spark plug is fouled though so I will be replacing, more info below.

Recent work done in the last few months that could affect logs.
Changed oil+filter, new coils and spark plugs for 1 step colder, gapped correctly. Work done around three months ago.
All six injectors changed to brand new index 12's. Old ones were index 7/9, at least one was leaking on cylinder 5, which is why the new plug is now fouled. New injectors correctly coded in. Work done over the weekend.
All vacuum lines apart from the one to the rear turbo wastegate renewed with silicone lines. Only did that today and had trouble reaching the rear wg, will try again tomorrow and should get it sorted.

Car is Stock with DCI and MHD Stage 1 93oct/98ron, running Shell V Power 99ron.
93k miles, original turbos still as far as I know, only had the car since March. No wastegate rattle that I can make out, this is my first turbo so I don't have any previous experience.


Thanks, Benjamin

[JunkyardDogg]

Originally Posted by Saif2018

Yes if its blinking then DSC or DTC is on, but if its off, from my understanding Torque limiter active is 0, maybe it shows 0 when DSC is off but DTC is active.

You could try turning it off (hold it down until its fully off for a few seconds) and relog.

Doesn't look any better Only other option is to log with Shell Vpower. Or is there an option to advance timing?
https://datazap.me/u/junkyarddogg/lo...og=0&data=3-22

[Saif2018]

Originally Posted by JunkyardDogg

Doesn't look any better Only other option is to log with Shell Vpower. Or is there an option to advance timing?
https://datazap.me/u/junkyarddogg/lo...og=0&data=3-22

OTS maps do not give the option to set timing parameters.

The only way to adjust timing is to get a custom map and have a tuner do it or make a custom map yourself if you know what you are doing. I don't think that's your issue.

Try Shell V Power and see if the corrections improve, you can also add Octane booster or E85 just to see if the corrections are due to fuel quality.

Assuming your plugs and coils are good, your injectors can also cause corrections, but I'd exhaust every possible alternative before buying them, since they are quite expensive. Have you checked to see any codes in MHD?

[JunkyardDogg]

Originally Posted by Saif2018

OTS maps do not give the option to set timing parameters.

The only way to adjust timing is to get a custom map and have a tuner do it or make a custom map yourself if you know what you are doing. I don't think that's your issue.

Try Shell V Power and see if thw corrections improve, you can also add Octane booster or E85 just to see if the corrections are due to fuel quality.

Assuming your plugs and coils are good, your injectors can also cause corrections, but I'd exhaust every possible alternative before buying them, since they are quite expensive. Have you checked to see any codes in MHD?

Assuming the better fuel doesn't change anything, how bad are the timing corrections and is it still safe as a daily driver (considering stock map also had timing corrections)? If not, would you recommend a custom tune? That would be much cheaper than new injectors. How do I check mhd codes?

[Saif2018]

Originally Posted by JunkyardDogg

Assuming the better fuel doesn't change anything, how bad are the timing corrections and is it still safe as a daily driver (considering stock map also had timing corrections)? If not, would you recommend a custom tune? That would be much cheaper than new injectors. How do I check mhd codes?

Make sure you try Octane booster or E85 to as well. They are up to around 3 degrees, so it's fine for daily driving. I wouldn't recommend a custom tune to get rid of corrections, it's better to find out what's causing them and minimise them instead.

[2_Spools_919]

Let me know what you think.

https://datazap.me/u/2spools919/log-...og=0&data=3-24

[Bradn54]

Hey all
So I’ve finally got my car back n tuned n wanna see what you guys think of my logs n whether my ‘tune’ is complete, I’m only running 20psi as still have the standard outlets RHD, car is full bolt-on with RB turbos, PR coils and index 12 injectors!
Thanks everyone

https://datazap.me/u/bradn54/gep-rev...og=0&data=3-22


https://datazap.me/u/bradn54/gep-rev...og=0&data=3-22