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      01-14-2026, 03:29 PM   #1
Pbdeed
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Advice logs MHD stage 1 91oct/95 ron

Hello,

I've recently flashed XHP stage 2 and Mhd stage 1 in my m240i F22 217.

Before flashing, I got some logs stock (4th gear, sport+), where I had some occasional -3 timing correction on cylinder 1 (https://datazap.me/u/pbdeed/stock-b58?log=0&data=3-16)

Then I flashed stage1 93oct/98 ron and logs were bad (4th gear sport+)

So I used the multimap to change to the 91oct/95ron map. And decided to log with DTC OFF and in 3rd (easier in public road).

I got 3 3rdrd gear pulls (https://datazap.me/u/pbdeed/stage-1-...og=0&data=3-16) and one 4th gear pull + an additional 3rd gear pull https://datazap.me/u/pbdeed/stage-1-...r-and-3rd-gear

Summary:

Log 1 (20:51): cylinder 3 has a timing correction of 5.9

Log 2 (20:53): 0.0 in all

Log 3 (21:00): 0.0 in all

Log 4 (21:03): cylinders 2 and 5 have -3 corrections


And the log in 4th gear, all of cylinders have -3 corrections but the cylinder 2 has -6 correction.

I'm using Shell V Power 93oct/98 ron. OEM spark plugs with 2000km.


I'm worried about logs in 4th and also big corrections.

Could it be spark plug gap? Should i gap them to 0.024"?

Last edited by Pbdeed; 01-14-2026 at 10:51 PM..
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      01-18-2026, 05:39 PM   #2
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Quote:
Originally Posted by Pbdeed View Post
Hello,

I've recently flashed XHP stage 2 and Mhd stage 1 in my m240i F22 217.

Before flashing, I got some logs stock (4th gear, sport+), where I had some occasional -3 timing correction on cylinder 1 (https://datazap.me/u/pbdeed/stock-b58?log=0&data=3-16)

Then I flashed stage1 93oct/98 ron and logs were bad (4th gear sport+)

So I used the multimap to change to the 91oct/95ron map. And decided to log with DTC OFF and in 3rd (easier in public road).

I got 3 3rdrd gear pulls (https://datazap.me/u/pbdeed/stage-1-95-dtc-3rd-geae?log=0&data=3-16) and one 4th gear pull + an additional 3rd gear pull https://datazap.me/u/pbdeed/stage-1-95-dtc-4th-gear-and-3rd-gear

Summary:

Log 1 (20:51): cylinder 3 has a timing correction of 5.9

Log 2 (20:53): 0.0 in all

Log 3 (21:00): 0.0 in all

Log 4 (21:03): cylinders 2 and 5 have -3 corrections


And the log in 4th gear, all of cylinders have -3 corrections but the cylinder 2 has -6 correction.

I'm using Shell V Power 93oct/98 ron. OEM spark plugs with 2000km.


I'm worried about logs in 4th and also big corrections.

Could it be spark plug gap? Should i gap them to 0.024"?
Stock oem gap is fine.. gapping tighter likely won't change anything at that level and will be a waste of effort. I ran whatever the stock gap is at 30psi and e45.. thats not the problem.

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      01-22-2026, 07:12 AM   #3
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