RE: Fuel management system / flash for akra catless headers? - 2

Got the headers early, installed them today and took a nice ride. I do not see or feel any issues when it comes to fueling. It doesnt feel like its lean at all, if anything i smell a bit of fuel from the pipe. Great stuff. Ill see if anything changes in the near future.

Yesterday didn't quite go to plan - the Dyno destroyed one of its drive roller bearings in the morning so they just uploaded the same map that they had developed on my mates R1250GS (which has the same Mivv headers , it has an Arrow can instead of my SC Project) as they are the same motor, told to ride it and come back for some check dyno pulls when its been repaired.
It is an improvement, even smoother pick up, a bit stronger off the bottom and through the midrange, especially noticeable in 5th , 6th gear overtaking roll-ons. (They did record +8 hp at 6000 during the mapping). As I suspected there is no arm wrenching improvement as it wasn't 'bad' to start with, but my engineers desire for 'correctness' is happy, if I am now poorer.............

Sounds right. Like having a really good canned map flashed on the bike. Id suspect making the flash more bespoke would make difference only on paper. Good info. I am probably going to order the flash tuner from bren tuning for the 1250GS since its the same engine. We will see how that goes, and to your point, a nice chunk of change for minor gains but worth the satisfaction of my OCD.

I've posed this question in the R1200RS section, but what experiences do people have with the Powercommander V? It seems like a budget friendly way to improve fueling after adding catless headers and a pipe. If you have a PCV did you notice any improvements? Negatives? I'm running titanium Acro headers and the Remus Hexacone (currently with baffle in). My biggest concern is that I've leaned out the engine further, and over time it may cause issues.

Do you have a 1200 or 1250?
I havent seen any options for power commanders for the 1250 yet.

PCVs are great to dial in your fueling when you adjust the air flow as well as change cams, displacement etc, but there are some negatives as well. The base version of PCVs load a fuel map that is non adaptive and dont use O2 sensors (or have you unplug them) etc. the adaptive part which would be their Target Tune, which is a closed loop wide band O2 system is more desirable due to it being able to adjust the fuel levels in real time ( great for people riding in variable altitudes, extreme tempertature changes etc).

Flashing your ecu is usually the way people go with beemers, brentuning etc. it maintains the factory cpu adaptive fuel settings and O2 sensor abilities. It can just be annoying when there is a cpu update from the factory which will require you to flash the bike again.

There are probably more intricate answers but this goes over the basics.

I have the titanium akra full system installed on my 1250 and have not noticed or felt any issues with going too lean as of yet. Usually you could feel when its too lean or rich as well as the engine temps start getting higher than usual when running too lean.

That answers most of my concerns. I have a 1200.

I'm satisfied that the BMW closed loop system will compensate enough to keep the motor safe, but it just won't optimise the fueling to make the most of your extra bits and bobs. As a side note, I've done more miles on my new map and it is making the price a lot more worthwhile as its now noticeably stronger and punchier, especially mid range. My mate with the GS rode it and reckon it feels better than his bike - not bad as the map was written at the expense of his back tyre.......

Hi Guys,
Appreciate this is an old thread, just wanted to get an update on those with catless headers?

I'm thinking of getting catless headers, ese servo plug and some form of end can. It's a 1250 I've got.

1. Is it worth going to all this expense for some noise and potentially heat reduction (I get a lot of heat on the right leg which I think is from the cat)

2. If I do all this do I need to add a custom map/pcv? Bare in mind I do want to keep it under warranty for as long as I own it.

Thanks in advance