[Insane435]

I am running bootmod3 stage 2 93 and my car pulls timing across the rev range. This is the same thing that happened on my n55 Bm3 93 tune. PTF always blame the octane but isnt 93 the same everywhere?

Are there OTS 93 maps bad? I think its odd that both my cars do this on 93.

Im also noticing that my 60-130 dragy time is 2 seconds slower than were I should be with exact mods and tune.

Can anyone share some logs with this tune?

[johnung]

Originally Posted by Insane435

I am running bootmod3 stage 2 93 and my car pulls timing across the rev range. This is the same thing that happened on my n55 Bm3 93 tune. PTF always blame the octane but isnt 93 the same everywhere?

Are there OTS 93 maps bad? I think its odd that both my cars do this on 93.

Im also noticing that my 60-130 dragy time is 2 seconds slower than were I should be with exact mods and tune.

Can anyone share some logs with this tune?

Gas quality is not the same. Could easily get a bad batch. If you flash down to the 91 tune with 93 in the tank, and it seems to run smoother with less timing corrections- then it’s probably poor gas quality

[Prak903]

If you have some E85 near you, add a couple gallons and see if it helps. The BM3 93 tunes are really finicky about gas quality, I’ve had the same issues.

[Wires]

If you are filling from pumps that don't move a lot of 93, it could be stale from sitting there a long time.

[MTWO]

Originally Posted by Insane435

I am running bootmod3 stage 2 93 and my car pulls timing across the rev range. This is the same thing that happened on my n55 Bm3 93 tune. PTF always blame the octane but isnt 93 the same everywhere?

Are there OTS 93 maps bad? I think its odd that both my cars do this on 93.

Im also noticing that my 60-130 dragy time is 2 seconds slower than were I should be with exact mods and tune.

Can anyone share some logs with this tune?

Why do you think your octane quality would change because you went from N55 to B58? Your octane is a constant there that’s all. What you can do though is go into map config and reduce your boost a little and see how it improves.

[Insane435]

Originally Posted by Prak903

If you have some E85 near you, add a couple gallons and see if it helps. The BM3 93 tunes are really finicky about gas quality, I’ve had the same issues.

I know but if i want to run e85 then id just run the e30 map. I should be able to run a 93 octane and have the car run right. Im gonna get shell gas and start testing different maps and see what happens.

[lens]

Originally Posted by Insane435

I am running bootmod3 stage 2 93 and my car pulls timing across the rev range. This is the same thing that happened on my n55 Bm3 93 tune. PTF always blame the octane but isnt 93 the same everywhere?

Are there OTS 93 maps bad? I think its odd that both my cars do this on 93.

Im also noticing that my 60-130 dragy time is 2 seconds slower than were I should be with exact mods and tune.

Can anyone share some logs with this tune?

Gas quality is never the same at any gas station, one batch may be worst than the other, but never consistent. Always log if you have doubt.

Never assume gas quality is good or the same at any gas station you go to, BM3 OTS maps are also very conservative (I know because I was one of their testers for 91 and ACN91 for PWG, same with the Stage 2H maps.)

MHD on the other hand has aggressive OTS maps as EU fuel is considerably better than NA, and most of their OTS maps are made over there.


If you really want to just flash a map and forget, get their flexfuel kit (which I have) and use their multimap with it, it'll auto adjust the maps based on Ethanol content (0% to 100% ethanol, depending on map maximum) which is why I use E10 91 octane, as my normal 91 oct is shit here in NS, the flexfuel kit uses the 10% ethanol and clears up timing corrections.

[Insane435]

So I added a gallon of e85 and the logs look better. Thought on these? It has to be the poor 93 winter mix quality.

https://www.bootmod3.net/log?id=63ce...729b0e1c00df0d
https://www.bootmod3.net/log?id=63cf...0b43db0b51bc5e

[G.Newt]

Originally Posted by Insane435

So I added a gallon of e85 and the logs look better. Thought on these? It has to be the poor 93 winter mix quality.

https://www.bootmod3.net/log?id=63ce...729b0e1c00df0d
https://www.bootmod3.net/log?id=63cf...0b43db0b51bc5e

Logs look good. Curious as to why you chose "psig" for HPFP instead of just "psi". I saw 5,000 at first and said ??? lol Then realized that's a different measurement of pressure lol.

And I've rarely seen a clean timing log on any of the BM3 pump gas tunes. But all their E mix tunes run great. I suggest grabbing a TU and just running a Stage 2+ E30 map if it's convenient enough for you.

[bmwenjoyer]

Originally Posted by G.Newt

Logs look good. Curious as to why you chose "psig" for HPFP instead of just "psi". I saw 5,000 at first and said ??? lol Then realized that's a different measurement of pressure lol.

And I've rarely seen a clean timing log on any of the BM3 pump gas tunes. But all their E mix tunes run great. I suggest grabbing a TU and just running a Stage 2+ E30 map if it's convenient enough for you.

I also recommend this. I was having timing issues with my Stage 2+ 93 tune and once I started mixing it with ethanol, even just a gallon or two on the 93 tune with the TU pump, my car was really happy.

I usually run the Stage 2+ E50 tune though because the power is incredible and addicting

[Insane435]

Originally Posted by G.Newt

Logs look good. Curious as to why you chose "psig" for HPFP instead of just "psi". I saw 5,000 at first and said ??? lol Then realized that's a different measurement of pressure lol.

And I've rarely seen a clean timing log on any of the BM3 pump gas tunes. But all their E mix tunes run great. I suggest grabbing a TU and just running a Stage 2+ E30 map if it's convenient enough for you.

The 5000 psi is correct as I have the TU motor with the higher fuel pressure.

2020 M340ix

[lens]

Originally Posted by G.Newt

And I've rarely seen a clean timing log on any of the BM3 pump gas tunes. But all their E mix tunes run great. I suggest grabbing a TU and just running a Stage 2+ E30 map if it's convenient enough for you.

https://www.bootmod3.net/log?id=63a4aa3fc090c6712c064b34


Ez

[Prak903]

Originally Posted by chaungo

https://www.bootmod3.net/log?id=63a4aa3fc090c6712c064b34


Ez

93? I wouldn't say this is clean timing lol. Still have some corrections up the rev range.

[lens]

Originally Posted by Prak903

93? I wouldn't say this is clean timing lol. Still have some corrections up the rev range.

https://www.bootmod3.net/log?id=63a1c630c090c6ce6a91e18f


It's so minimal that it's negligible.

91

[kern417]

Clean 93 logs are very rare. Even the stock tune has some timing pull.

Like most, I added some E85 to a few tanks and, after seeing the improvement, just switched to E30. No regrets.

If you want a clean 93 tune then your best bet is to go with a custom tuner. But keep in mind you can travel somewhere with worse quality fuel and still run into the same issue. It's just a part of the tradeoff.

[BaconDouble]

Can someone explain to a BM3 newbie where the timing pull can be observed?
I've read lots (but have lots more to read) and viewed several logs about pulling timing.

Can someone post a graph where there is the timing being pulled so I can see what it looks like?

I am running BM3 Stage 3 93 octane myself so wondering if the same thing is happening to me. I feel an initial surge sometime (like boost building up), then it seems the engine reduces power a bit for a second, then the power seems to go back up again.

[G.Newt]

Datalog parameters -> Advanced -> RAM -> Timing Correction. Or something like that, it's been awhile since I've had the car. You want to enable all 6 cylinders.

If those numbers aren't 0, there's timing correction. Although up to -3 in a cylinder or 2 is acceptable. If you're getting timing corrections across several cylinders throughout the pull, most likely your fuel quality isn't good enough. There's a dedicated Log Review thread on this first page where you can post it and have others take a look.

[Brayton]

Having the same exact issue rn. currently running an e30 blend, fbo 435i. i haven’t logged it since switching the to e30 map but when i was on 91 i noticed how slow my times were compared to other cars. now that im on e30 it honestly doesn’t feel that much different, 60-130 times are almost identical. i need help with this issue

[sigterm2.0]

You'll have to log it, otherwise anything anyone says will just be a guess.

I was recently dealing with AFRs that were not in line with what I thought they should be for boosted applications and received some good feedback about it, but it was all dependent on my logs.

In those logs, I saw what I was looking for, but relevant to this thread, I could also see the timing pull. You can also compare your boost target to boost actual values.

For example I saw when I ran the Stage 2 91oct map, my boost bled off by 2 psi over the rpm band... What gives? Well, I was able to compare it to the log and saw that my the boost TARGET bled off at the same rate. So my car was doing exactly what it was supposed to do.

...anyway, that was a just a long winded post that I hope gets across the point of how important your logs for helping diagnose performance issues.

Post your logs.

[Brayton]

e30 tune
https://www.bootmod3.net/log?id=65d4...f2c967f9ab1c84

https://www.bootmod3.net/log?id=65d4...040d6609f9e239

91 tune

https://www.bootmod3.net/log?id=658e...3b1e21e8fa610e

https://www.bootmod3.net/log?id=65a1...76154fc89f160e

[n55david]

Originally Posted by Brayton

Having the same exact issue rn. currently running an e30 blend, fbo 435i. i haven’t logged it since switching the to e30 map but when i was on 91 i noticed how slow my times were compared to other cars. now that im on e30 it honestly doesn’t feel that much different, 60-130 times are almost identical. i need help with this issue

Log it.. your mix is probably way wrong

[Doctor X]

Originally Posted by bmwenjoyer

I also recommend this. I was having timing issues with my Stage 2+ 93 tune and once I started mixing it with ethanol, even just a gallon or two on the 93 tune with the TU pump, my car was really happy.

I usually run the Stage 2+ E50 tune though because the power is incredible and addicting

You're running E50 with the TU Pump?