MHD LOGS - Post them here

enuff_zed · Post by **enuff_zed** » Thu Mar 12, 2020 8:19 pm

Can you get a tank of the 100 and try again?

enzed4 · Post by **enzed4** » Fri Mar 13, 2020 4:08 am

enuff_zed wrote: ↑Thu Mar 12, 2020 8:19 pm Can you get a tank of the 100 and try again?

Should be no problem, the self-serve station has 100 and I'm down to about 1/3 tank of 95 at the moment. A bit of driving aimlessly tonight should get it down some more to give it room to fill with 100. I'll update the thread with results.

R.E92 · Post by **R.E92** » Fri Mar 13, 2020 11:21 am

There's no obvious cause of the corrections. My first reaction, after getting a fresh tank of fuel from a different station, would be to try different plugs, it's possible that whoever installed the current set used plugs that have been bashed around in transit.

enzed4 · Post by **enzed4** » Tue Mar 17, 2020 9:08 am

Today's Update:
I managed 2 runs today, one with DSC off (as recommended) and one with DSC on. Full tank of 100 octane. Had a close call on Saturday while out for a 3 hr round trip, met a tourist coming around the corner on a hill on the wrong side of the road towards me. Managed to avoid each other and the Zed lived another day....
Anyway, first run. Timing corrections at the start of the run, then they all smoothed out to zero.

: stage0-dsc_off.JPG (43.56 KiB) Viewed 532 times

https://datazap.me/u/enzed4/stage0-100o ... &data=3-22

Second run. Zero timing corrections throughout.

: stage0-dsc_on.JPG (36.95 KiB) Viewed 532 times

https://datazap.me/u/enzed4/stage0-100o ... &data=3-22

So, does my Z4 not like 95oct fuel? The 100oct was bought at the same site as I get the 95, so same brand, nothing radically different other than the higher octane.
I guess I'll need to do some more runs to see if it's consistent.

R.E92 · Post by **R.E92** » Tue Mar 17, 2020 9:27 am

Sometimes stations can have bad fuel. There's lots of reasons for it but the best way to eliminate would be to use a completely different station. A busy station is usually a good place to start as the fuel will be fresh.

Logs certainly look better though.

Beeacon · Post by **Beeacon** » Tue Mar 17, 2020 1:51 pm

I was told to use higher octane fuel from the previous owner of the car due to it being remapped. Maybe it is just a case of needing better fuel?

enzed4 · Post by **enzed4** » Tue Mar 17, 2020 8:07 pm

Beeacon wrote: ↑Tue Mar 17, 2020 1:51 pm I was told to use higher octane fuel from the previous owner of the car due to it being remapped. Maybe it is just a case of needing better fuel?

Interesting as the MHD tune options only offer 91, 93 and 95oct as choices. Looks like using 100oct on a 95oct map works for me.
I've only logged 2 runs so it's hardly conclusive yet. If it does stay consistent, I'll try the stage1 and 1+ maps again.

R.E92 · Post by **R.E92** » Tue Mar 17, 2020 9:48 pm

You need to keep in mind that MHD is quoting AKI numbers not RON since it's main market is the USA.

Your 100 RON fuel is equivalent to 95 AKI.

enzed4 · Post by **enzed4** » Wed Mar 18, 2020 7:39 pm

R.E92 wrote: ↑Tue Mar 17, 2020 9:48 pm You need to keep in mind that MHD is quoting AKI numbers not RON since it's main market is the USA.

Your 100 RON fuel is equivalent to 95 AKI.

MHD shows both RON and OCT, so I have been choosing the map with the closest OCT.

: Screenshot_20200319-073435.jpg (81.63 KiB) Viewed 482 times

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