[MCAMPOS]

Can anyone take a look at my data log? Looks like I’m getting a lot of timing corrections. I’m planning on going to stage 2+ next week but now I’m a little concerned.

https://bootmod3.net/log?id=6626c3829d6af508eb0b3e67

[Gr8ZongB58]

Originally Posted by MCAMPOS

Can anyone take a look at my data log? Looks like I’m getting a lot of timing corrections. I’m planning on going to stage 2+ next week but now I’m a little concerned.

https://bootmod3.net/log?id=6626c3829d6af508eb0b3e67

What mods you running?
What gas?
new plugs?
mileage?

With that level of corrections, the culprit is almost always gas quality. You got 2 engine knocks, again..gas quality. Everything else seems good.

[MCAMPOS]

Totally stock 2018 X3M40i. 63k miles. Brand new NGK 94201 gapped at .028. Meijers 93 fuel.

[Gr8ZongB58]

Originally Posted by MCAMPOS

Totally stock 2018 X3M40i. 63k miles. Brand new NGK 94201 gapped at .028. Meijers 93 fuel.

It is most likely your gas. Try finding a shell or chevron as I have always had better logs with their gas, especially ones with a lot of traffic. Run that tank all the way down and test again.

Anything other than high quality gas is just one of them inevitable handicaps we have to suffer with...until you run ethanol 😎

[suby01]

^^^ What he said. It's 99.69% your fuel.

I can confidently say that BM3 OTS maps for our cars are nearly perfected at this point in time.

You have a 100% stock car. Nothing to look at to change or issues in your mod list. Only thing is gas. Change a station and retry.

AND as of right now dont floor it with your 2 knock sensors going off.

[joebie3]

You could add a little bit of E85, I aim for 1.7-2 Gal - If the timing corrections go away it's 100% gas as the others have said.

[MCAMPOS]

There aren’t a whole lot of shells around me. But the Meijer down the street does have e85. Light came on today so I’ll put a couple gallons of e85 in and top off with 93. I’ll post another datalog later today

[deviation01]

Hi Guy's, I am trying to understand this platform a bit better (coming from Mark 7 GTI platform).

A few questions:

Why do we have multiple Ignition timing degrees 1,2,3,4,5,6 etc... is that each individual cylinder? I am used to only having one timing line overall.

Do our cars generate false knock. It was very common in the Mark 7 GTI world to have that. It could even be something unrelated causing the knock.

If the degrees are for each cylinder why do some timing gets corrected at much later point after the knock?

Was traction control on or off? Can this contribute to the knock?

Overall I think the log looks pretty good.

[MCAMPOS]

Alright. Did 2 runs with a couple gallons of e85 this time. Thought?

https://bootmod3.net/log?id=66280e765d57f9536ad08784

https://bootmod3.net/log?id=66280e90f3989f1af07ccb65

[Gr8ZongB58]

Originally Posted by MCAMPOS

Alright. Did 2 runs with a couple gallons of e85 this time. Thought?

https://bootmod3.net/log?id=66280e765d57f9536ad08784

https://bootmod3.net/log?id=66280e90f3989f1af07ccb65

Will ya look at that! All cleaned up! Your m40i appreciates you again.

Time to go stage 2 and get a TU pump and catless or catted downpipe.

[MCAMPOS]

TU pump and new injectors will be here tomorrow and the cat less downpipe will be here end of the week lol. Now question is do I get the flex fuel kit and do the multi map 🤔

[Gr8ZongB58]

Originally Posted by MCAMPOS

TU pump and new injectors will be here tomorrow and the cat less downpipe will be here end of the week lol. Now question is do I get the flex fuel kit and do the multi map 🤔

Flex fuel all the way.

[MCAMPOS]

Originally Posted by Gr8ZongB58

Flex fuel all the way.

My only concern going flex fuel is right now I have to add ethanol to clean up the timing. If I go flex fuel, when I add ethanol will it not see the ethanol and bump up the tune? Negating the safety margin I’m getting from ethanol now? In other words I’m worried about running into timing corrections with a more aggressive tune. Not sure if that makes sense

[vrships]

Not too much to worry about .

My stock tune has corrections all over up to 8 degrees when WOT. The car has been driving like this for 4 years until I realized that when I got BM3. And it didn’t break anything as I can tell.

For me the nonACN maps from BM3 seem hard to satisfy with 93 pump gases. I want to run stage 2 93 but I am in California and only accessible to crappy 91( effectively less than 89, who knows). And guess what ? Now I run a full tank of crappy pump 91 with 3.5 gallons of E85 and my stage 2 runs are almost cleanest. And I get the promised horsepower and 0-60 time just like any other B58 through numerous road tests.

The reason I don’t run E30 or E50 too often is their gas mileage are noticeably worse when cruising around town than my effectively E23 on 93 map

[Gr8ZongB58]

Originally Posted by MCAMPOS

My only concern going flex fuel is right now I have to add ethanol to clean up the timing. If I go flex fuel, when I add ethanol will it not see the ethanol and bump up the tune? Negating the safety margin I’m getting from ethanol now? In other words I’m worried about running into timing corrections with a more aggressive tune. Not sure if that makes sense

The flex fuel tune will adjust to the ethanol content sensor and tune accordingly. I'm not sure how bm3 flex tunes work but I can say that on MHD, I get little to no corrections across all cylinders at wot. And that is ranging from e30-e70. The only time I get corrections again is when I cylce a full tank of 93 but depending on the fuel quality, it was still minimal at -1-2 degrees at most across only 2-3 cylinders.

The more ethanol you run, the more timing you gain but does not necessarily mean you are gaining more power.

[dinan5m3]

To those running >E10 mix, how long after fill up typically are you draining the gas tank? In other words, are you filling up ~once a week? Wondering how long you are letting >E10 mix remain in the tank.

[MCAMPOS]

Originally Posted by Gr8ZongB58

The flex fuel tune will adjust to the ethanol content sensor and tune accordingly. I'm not sure how bm3 flex tunes work but I can say that on MHD, I get little to no corrections across all cylinders at wot. And that is ranging from e30-e70. The only time I get corrections again is when I cylce a full tank of 93 but depending on the fuel quality, it was still minimal at -1-2 degrees at most across only 2-3 cylinders.

The more ethanol you run, the more timing you gain but does not necessarily mean you are gaining more power.

Appreciate all the help!
Any BM3 flex fuel users wanna chime in? Any issues with corrections on a stage 2+ multi map tune?