[nismoman]

Thoughts on this log would be appreciated. 2017 6spd m2, Installed Injen Intake, CSF Intercooler and Evolution race-werks catless down pipe, stage 2 93 octane ots, with the stock muffler. I'm assuming I just paste the share the web
link address? Thanks for the input

http://www.bootmod3.net/log?id=5ce4ae72c090c67dfdca5e7b

[Pray for Mojo]

Looks like the HPFP was struggling to keep up, your gas looked ok in the first gear but once the pump started lagging your timing went to shit. Was the car hesitating or stuttering at all?

[nismoman]

Not really, felt normal through the pull. What is the normal ish timing advance number for a healthy pull

[Cornally]

Not to thread-jack, but, does it make sense in a scenario like this to back down to the stage 1 93 ots map or stage 2 91 ots? I'm wondering which map strikes a better balance of performance vs. taxing the hpfp.

[cecaa850]

Originally Posted by Cornally

Not to thread-jack, but, does it make sense in a scenario like this to back down to the stage 1 93 ots map or stage 2 91 ots? I'm wondering which map strikes a better balance of performance vs. taxing the hpfp.

Great question. I would be interested in this as well.

[Pray for Mojo]

Usually it's only the E30 tune that taxes the HPFP, not sure why the OP's pump was struggling a bit, could be a one off tank of gas. I run the 91 OTS because it doesn't seem as sensitive to gasoline quality and I'm only sacrificing 10-15hp.

Clean log should look like this, this is M235i Stage 2 91 OTS. Timing is nice and even all the way up, around 6,000rpm should be 10 or 11.
http://www.bootmod3.net/log?id=5baadd37d10b435c56a38457

[nismoman]

Thanks. It was definitely fuel quality, That was a no name mobil station 93. I had roughly half a tank today and filled up with shell 93 and dumped a can of vp octane booster and everything cleared up big time. Pulled like a freight train! I'll post the log from tonight in another thread so people can see how it affects timing. Thanks for the help.

[Anthony1s]

Originally Posted by Pray for Mojo

Usually it's only the E30 tune that taxes the HPFP, not sure why the OP's pump was struggling a bit, could be a one off tank of gas. I run the 91 OTS because it doesn't seem as sensitive to gasoline quality and I'm only sacrificing 10-15hp.

Clean log should look like this, this is M235i Stage 2 91 OTS. Timing is nice and even all the way up, around 6,000rpm should be 10 or 11.
http://www.bootmod3.net/log?id=5baadd37d10b435c56a38457

What happened to cause your timing to jump to 36 at the end? Is that the exhaust burbles coming on?

[Happy Motoring]

Originally Posted by Pray for Mojo

Usually it's only the E30 tune that taxes the HPFP, not sure why the OP's pump was struggling a bit, could be a one off tank of gas. I run the 91 OTS because it doesn't seem as sensitive to gasoline quality and I'm only sacrificing 10-15hp.

Clean log should look like this, this is M235i Stage 2 91 OTS. Timing is nice and even all the way up, around 6,000rpm should be 10 or 11.
http://www.bootmod3.net/log?id=5baadd37d10b435c56a38457

I don't know how bad or good the gas in Canada is but with people experiencing knock issues based on octane, I think I'll follow you and do 91 octane ots to play it safe.

[digimattic]

Originally Posted by Happy Motoring

I don't know how bad or good the gas in Canada is but with people experiencing knock issues based on octane, I think I'll follow you and do 91 octane ots to play it safe.

Our gas (at least in Toronto) seems pretty good! I have had no issues with Esso (ExxonMobil)'s 93 Octane or PetroCanada's 94 Octane. My M2 is not tuned, but had a WRX pro-tuned for 94 and never had an issue with a bad tank.

[Happy Motoring]

Originally Posted by digimattic

Our gas (at least in Toronto) seems pretty good! I have had no issues with Esso (ExxonMobil)'s 93 Octane or PetroCanada's 94 Octane. My M2 is not tuned, but had a WRX pro-tuned for 94 and never had an issue with a bad tank.

Considering M2 from factory is able to take 91 octane I'm sure nobody will notice a difference but it seems with BM3 it is really finicky.

[Pray for Mojo]

Originally Posted by digimattic

Our gas (at least in Toronto) seems pretty good! I have had no issues with Esso (ExxonMobil)'s 93 Octane or PetroCanada's 94 Octane. My M2 is not tuned, but had a WRX pro-tuned for 94 and never had an issue with a bad tank.

You really don't have any idea if the gas is good unless you're logging. The cars are made to run on almost any "premium" gas seen worldwide. The DME will adapt and make less power on poor quality fuel.

Originally Posted by Happy Motoring

I don't know how bad or good the gas in Canada is but with people experiencing knock issues based on octane, I think I'll follow you and do 91 octane ots to play it safe.

You might have better luck with TX 93, but here our "94" won't even run OTS 91 with clean timing. We have similar fuel quality to California/West Coast.

[digimattic]

Originally Posted by Pray for Mojo

You really don't have any idea if the gas is good unless you're logging. The cars are made to run on almost any "premium" gas seen worldwide. The DME will adapt and make less power on poor quality fuel.



You might have better luck with TX 93, but here our "94" won't even run OTS 91 with clean timing. We have similar fuel quality to California/West Coast.

Noted. Would the Torque Pro app be sufficient to start logging it? the BM3 logs look like they're measuring timing on all six cylinders?

[Nezil]

Originally Posted by Happy Motoring

Considering M2 from factory is able to take 91 octane I'm sure nobody will notice a difference but it seems with BM3 it is really finicky.

It's not that BM3 is finicky, it's that the CA 91 octane is truly awful!

As others have said, the M2 from factory will run on 91 octane, but it won't run correctly as intended; even more so if it's hot outside with its woefully inadequate factory FMIC.

Take logs on the stock map and you'll see timing pull all over the place.

I'd actually hazard a guess that if a BMW DME engineer were to look at the logs with the CA 91 fuel, he'd be very surprised, and not in a good way. I very much doubt they've ever had engineers test CA fuel.

I know BMW has staff all over the globe, but I work for a large company that sells product internationally. If there is a problem in a region, we might send some engineers there to investigate, but if there isn't a problem, 95% of the engineering work goes on wherever 'home' is - Germany obviously for BMW.