Air filter? - Page 2 - BMW G310 R/GS Forum
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post #11 of 15 (permalink) Old 12-31-2018, 04:17 AM
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You can do an Exhaust and Air Filter (K&N, BMC) and not have to do any adjustments. You can if you want.


If you open air box to make unrestricted, then you will have to remap with PC5 (if they ever make one) or Magnumtuning.com or other.

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post #12 of 15 (permalink) Old 08-26-2019, 05:08 PM
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I have also made some changes to my GS recently. I have replaced the stock exhaust with akrapovic racing line(carbon fiber) and BMC air filter(stock replacement) in place of stock air filter. I have noticed some good gains and great growling from the bike. After all this now i am little concerned about the air fuel mixture. Do you think the g310 siblings need ecu remapping after exhaust and air filter upgrade ?

Ps - I have heard many people saying that the O2 sensor would self correct and take care of it.
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post #13 of 15 (permalink) Old 10-21-2019, 12:06 PM
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Maybe a weird question, but Iíve posted on other threads here about the annoying vibration coming from my air box area at between 5500 and 6500 rpm.
So my question is..... could something on the numerous connecting parts be loose.
Failing that, how can I QUIETEN my intake noise???


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post #14 of 15 (permalink) Old 10-24-2019, 12:01 AM
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Quote:
Originally Posted by dhananjay View Post
I have also made some changes to my GS recently. I have replaced the stock exhaust with akrapovic racing line(carbon fiber) and BMC air filter(stock replacement) in place of stock air filter. I have noticed some good gains and great growling from the bike. After all this now i am little concerned about the air fuel mixture. Do you think the g310 siblings need ecu remapping after exhaust and air filter upgrade ?

Ps - I have heard many people saying that the O2 sensor would self correct and take care of it.
You would probably do better if you added some fuel management like a PCV to fatten the mixture up since you're moving air more freely and the bikes normally run a little lean for emissions. That said, what you hear is roughly correct, feedback from the O2 sensor will cause the ECU to adjust long-term fuel trims [LTFTs], up to a point, there's a maximum on LTFTs and BMW wants the bike lean. Some ECUs will throw a code if they can't get their mixture where they want after maxing LTFTs. Unlikely in this case.

Without fuel management you should be totally fine, maybe a little leaner. However you're also leaving both power and fuel economy on the table.

For anyone with basic intake and exhaust mode like yours or a de-restricted airbox it would be really hard get so lean you do damage. The reality is these mods just don't make that big of a difference or they'd show bigger gains on the dynos.

Last edited by aob; 10-24-2019 at 12:07 AM.
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post #15 of 15 (permalink) Old 10-24-2019, 03:47 AM
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This is for 310R but it is probably the same.




I am looking to change filter, but will probably wait until spring.
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2017 Hyosung GD250R Black/Gray
2016 KTM RC390
2014 Kawasaki Ninja 300 SE (sold)
2008 Hyosung GT250R (crashed)
199x Kawasaki Ninja 250 (engine failure)
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