Author Gen 2 Headers & Tunes - The Latest?  (Read 3468 times)

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  • Offline matt-wt   gb

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    • #10

    Offline matt-wt

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    Re: Gen 2 Headers & Tunes - The Latest?
    Reply #10 on: February 03, 2024, 06:14:50 pm
    February 03, 2024, 06:14:50 pm
    *Originally Posted by david_s [+]
    Not on a big capacity motorbike mate, 20mph 1st gear, 30mph 2nd gear as a guide. You might think it's wailing but it's really not. You're talking about an engine that'll rev to 11k, not the 6-7k a standard car petrol engine will. The advantage to keeping in a lower gear is that the bike will be more responsive, not only acceleration but also engine braking where just rolling off the throttle will often do the trick instead of using the brakes.

    That’s a fair point! I’m just basing it on my CBR, used to gearing up in towns to tone the decat down and you could ride that in 4th comfortably at 30mph.

    When I’m out on mine next I’ll keep it in the lower gears  :028:

  • Offline matt-wt   gb

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    Offline matt-wt

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    Re: Gen 2 Headers & Tunes - The Latest?
    Reply #11 on: February 06, 2024, 10:31:25 am
    February 06, 2024, 10:31:25 am
    *Originally Posted by the bartender [+]
    you're in the wrong gear......

    So, I rode it yesterday and in a 20mph zone, cruise control set to 20mph in 1st gear to eliminate my throttle input and the bike is lunging. To the point where you can feel the chain kicking under the bike.

  • Offline david_s   gb

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    Offline david_s

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    Re: Gen 2 Headers & Tunes - The Latest?
    Reply #12 on: February 06, 2024, 10:46:01 am
    February 06, 2024, 10:46:01 am
    *Originally Posted by matt-wt [+]
    So, I rode it yesterday and in a 20mph zone, cruise control set to 20mph in 1st gear to eliminate my throttle input and the bike is lunging. To the point where you can feel the chain kicking under the bike.

    I wouldn't be happy with that, I'd take it back to BMW to have a look at it.

  • Offline matt-wt   gb

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    Offline matt-wt

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    Re: Gen 2 Headers & Tunes - The Latest?
    Reply #13 on: February 06, 2024, 10:49:10 am
    February 06, 2024, 10:49:10 am
    *Originally Posted by david_s [+]
    I wouldn't be happy with that, I'd take it back to BMW to have a look at it.

    I will give them a call and see what they say, bad time of year to book it in wishful of good weather to take it..  :008:

    At 30mph in second it’s a little better but not as smooth as you’d expect, a 4 cylinder should be silky smooth.

    Usually 20mph wouldn’t be an issue but with the new 20mph limits in Wales you do find yourself needing to do it sometimes and the bike really doesn’t like it.

  • Offline falernia   gb

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    Offline falernia

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    Re: Gen 2 Headers & Tunes - The Latest?
    Reply #14 on: February 08, 2024, 10:39:18 pm
    February 08, 2024, 10:39:18 pm
    *Originally Posted by matt-wt [+]
    I’ve come across a company called BHP UK after chatting somebody who has their bike for sale with a map from them. From speaking to them they’re very knowledgeable and experienced with these engines. They offer custom maps for £449 on their dyno with a single time flash, or £499 you get a ‘flasher’ in the post, download your stock file and send it to them, they’ll modify the file to suit the mods you’ve fitted and then send the file back… you can use your flasher to install/remove the custom and stock file as many times as you like and they claim that it is undetectable by BMW if you put the stock map back on.
    I’ve had the BHP flasher and have remapped my Gen 2. Like you I found the fuelling was dreadful on a holding throttle just under 3000rpm. I also have a Gen 1 which runs sweetly, so it appears to be because of Euro compliance. To be honest it was so bad that I considered getting rid of the bike! The BHP remap has improved things dramatically and whilst still not perfect it is now a much more rideable bike.

    I’ve spoken with my dealership (off the record) and he reckoned that providing I revert to standard when dropping it off for service, he doesn’t reckon that they would pick up on it. So in conclusion, thoroughly recommended. I hope this helps.

  • Offline Winger   gb

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    Offline Winger

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    Re: Gen 2 Headers & Tunes - The Latest?
    Reply #15 on: February 10, 2024, 06:39:22 am
    February 10, 2024, 06:39:22 am
    Understand what the TUV force manufactures to do,then getting your head around what needs to be done to the fuelling makes a lot more sense,my preference with aftermarket fuelling is still a Power Commander.

  • Offline matt-wt   gb

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    Offline matt-wt

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    Re: Gen 2 Headers & Tunes - The Latest?
    Reply #16 on: February 10, 2024, 08:34:52 am
    February 10, 2024, 08:34:52 am
    *Originally Posted by Winger [+]
    Understand what the TUV force manufactures to do,then getting your head around what needs to be done to the fuelling makes a lot more sense,my preference with aftermarket fuelling is still a Power Commander.

    Unfortunately, no option for a Power Commander for Gen 2!

  • Offline Winger   gb

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    Offline Winger

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    Re: Gen 2 Headers & Tunes - The Latest?
    Reply #17 on: February 10, 2024, 02:58:00 pm
    February 10, 2024, 02:58:00 pm
    So what did Dynojet UK say when you asked them why not?

  • Offline matt-wt   gb

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    Offline matt-wt

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    Re: Gen 2 Headers & Tunes - The Latest?
    Reply #18 on: February 10, 2024, 10:03:00 pm
    February 10, 2024, 10:03:00 pm
    *Originally Posted by Winger [+]
    So what did Dynojet UK say when you asked them why not?

    No plans to develop one, too much hassle with the supporting hardware that would be required for one to work.

    Apologised but they can’t help with Gen 2.

  • Offline Winger   gb

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    Re: Gen 2 Headers & Tunes - The Latest?
    Reply #19 on: February 11, 2024, 11:06:22 am
    February 11, 2024, 11:06:22 am
    Been there done that with a K1200r Sport that I’ve had for the last 15 years,they will produce one,but rush e’m selves they certainly won’t,hence why I had a Rexxer map blown in some years ago,the important part is filling in the TUV fuel gap at 3250 revs and ditching the O2 fuel sensors which are determined to drive the injectors nuts.