Kev's 1290 modification list

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Re: Kev's 1290 modification list

Post by mrossk » Sun Apr 10, 2016 5:37 am

What front sprocket are you running?

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Re: Kev's 1290 modification list

Post by Massimo » Sun Apr 10, 2016 10:17 am

16 at the moment, but I've tried both; I was even thinking to try a +1/2 on the rear as well but then I got the sensation all the first 2/3 gears will become too short.
Probably it isn't the right engine for me anyway but I wonder if the output improvment you get with PCV and AT worth the 7/800€ plus the effort required

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Re: Kev's 1290 modification list

Post by mrossk » Sun Apr 10, 2016 3:44 pm

It's definitely a different feel from an I-4, for sure. It's taken me a few months and nearly 2k miles, but I've gotten more used to it. At least for me, just being in the right gear makes it all right- keep the rev's above 4500 or so- and the huge rush of torque when you want it is pretty fun. That said, there's always a new Tuono 1100...

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Re: Kev's 1290 modification list

Post by mac900 » Mon Apr 11, 2016 3:16 am

Massimo wrote:16 at the moment, but I've tried both; I was even thinking to try a +1/2 on the rear as well but then I got the sensation all the first 2/3 gears will become too short.
Probably it isn't the right engine for me anyway but I wonder if the output improvment you get with PCV and AT worth the 7/800€ plus the effort required
The 1290 is a big V-twin and it, like Ducati big twins, has it's own power character. Although it's better than the Ducs it isn't an I-4. In some regards it's harder to ride because of that. You either like the way it makes power or you don't. The PC5 & auto tune will not make that much of a difference. It gets better but nowhere like a I-4 or maybe a V-4. Can't speak for Tuono because I haven't ridden one but I had a BMW S1000R for 6,000 miles and it was way less picky about how you used the power than the SDR.

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Re: Kev's 1290 modification list

Post by Gimlet » Mon Apr 11, 2016 9:24 am

Don't have any issues with the power delivery on mine. Nor with the gearing. I don't think it needs down-gearing. Just use the right cog. Its got enough tractability and grunt everywhere, you don't need to go looking for a sweet spot. Just keep it above it drop below 4K in the top three gears and three K in the lower ones and its fine. I've ridden all day without touching 6th. If you're going as fast as you want and the engine is loping along on moderate revs why should you feel you need to be in top? Even cruising along at 90/100 mph its still delivering better fuel economy than my little diesel van, if the instruments are to be believed.
And it pulls plenty hard enough in 6th if you're going fast enough. At 120 its pulling so hard you could be forgiven for searching for another gear.
I am coming from a 1098 Ducati though so I'm used to big twins. The Duc's perfectly easy to ride as well. Even more so with a remap to get rid of the emissions control crap and clean up the fuelling. It just needs a lighter clutch. (And a wet clutch...)

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Re: Kev's 1290 modification list

Post by mac900 » Mon Apr 18, 2016 12:49 am

Gimlet wrote: I am coming from a 1098 Ducati though so I'm used to big twins. The Duc's perfectly easy to ride as well. Even more so with a remap to get rid of the emissions control crap and clean up the fuelling. It just needs a lighter clutch. (And a wet clutch...)
A wet clutch on a 1098? Blasphemy!

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Re: Kev's 1290 modification list

Post by devilisht2003 » Mon Apr 18, 2016 2:16 pm

Kev,
DO you happen to have the gear ratios for the stock bike to put into the PC-V for gear dependent quick shifter?I dont have access to a dyno and cant set them as the bike uses the front wheel for speed pickup. Thanks!

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Re: Kev's 1290 modification list

Post by rexe » Mon Apr 25, 2016 5:51 am

[quote=I will have many bits for sale if I don't get another 1290.[/quote]

Hi Kev, did you have a Akro slip on for your 1290 on the bike when you sold it or standard pipe. I have 1190s with Wings slip on.(that you would have seen when I came to your house) but I want to try, see the sound difference of the 2.

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Re: Kev's 1290 modification list

Post by kevxtx » Mon Apr 25, 2016 8:34 am

I have a near new debaffled 1290 STD slipon sitting in my cupboard + a right side mirror + a repaired mount tail light.

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Re: Kev's 1290 modification list

Post by kevxtx » Mon Apr 25, 2016 8:36 am

devilisht2003 wrote:Kev,
DO you happen to have the gear ratios for the stock bike to put into the PC-V for gear dependent quick shifter?I dont have access to a dyno and cant set them as the bike uses the front wheel for speed pickup. Thanks!
Sorry I don't, you will have to work them out using the parts finder. This may help http://www.gearingcommander.com/

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Re: Kev's 1290 modification list

Post by AOAM » Thu Apr 28, 2016 4:40 am

kevxtx wrote:
wsmc99 wrote:
If you want to leave everything standard just fit Rottweilers fuel dongle which eliminates the O2 sensors & smoothens the ride out nicely low down & ride the bike.
Hoping to get some more thoughts on the Rottweilers fuel dongle. Any known downsides? In smoothing out the low end, do we lose power? Or is it just quicker to respond? Sorry for the noob questions. Just generally interested. My bro picked up the same bike and just installed his PCV and AT. I'm sure I'll go down the same path... but not until next year. Would love to smooth out the bottom.

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Re: Kev's 1290 modification list

Post by DukeNukem » Thu Apr 28, 2016 5:49 am

I can't comment too much on whether the fuel dongle smooths out the bottom end but after coming from IL4s and a V4 i can tell you that IL4 engines have a smooth bittom(;)),V4s less so and big twins even less so!!

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Re: Kev's 1290 modification list

Post by mrossk » Thu Apr 28, 2016 6:00 am

Doesn't it simply richen the fuel mixture a few points? So, smoother, cooler, more fuel consumption...I suppose if its too rich it could do some damage, but that seems unlikely, no?

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Re: Kev's 1290 modification list

Post by 4zilch » Thu Apr 28, 2016 12:06 pm

I had a similar question as those above. I'm considering adding a Remus pipe for more sound and reduced weight. My question is the stock fuel map capable of maintaining an adequate A/F ratio with the stock intake intact? I suspect O2 dongles will improve A/F at low RPM, but is a PCV required to maintain adequate A/F ration towards the top of the range with this set-up?


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Re: Kev's 1290 modification list

Post by AOAM » Thu Apr 28, 2016 3:56 pm

Thanks for the responses thus far. I am not expecting the dongles to change engine characteristics. This is bike number 23 for me and have had plenty of different engine configurations - just haven't had the bug to really modify. I've got a Moto Guzzi GRiSO and a new map really opened my eyes to what can be done - even simply.

I guess the specific question I have is: in what other circumstances does the ECU use the O2 sensors? Is it purely at warm up or at less than 20% throttle? Am I missing out on a level of engine control (electronic) at any point by eliminating them?

Thanks!

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Re: Kev's 1290 modification list

Post by SUPERDUKEINOZ » Sun May 01, 2016 6:18 am

Was the 3 pack KTM part number 61105099130? I am trying to find these very same slip in cats???
If you happen to have this cat leftover Kevxtx let me know & I will buy it?

kevxtx wrote:Off eBay I bought it the same time as my 50mm 990 cats that I fitted to my Leovince pipes, the sale came as 3 cats.

Len you will need to measure your Akra pipe to see if it will fit, Akra list many different size cats, it is a real pain running cats, we are so over policed here in Queensland it is best to keep on their side.
Image
Image

You can see straight through a 200 core cat.
Image

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Re: Kev's 1290 modification list

Post by AOAM » Sun May 01, 2016 4:01 pm

AOAM wrote:I guess the specific question I have is: in what other circumstances does the ECU use the O2 sensors? Is it purely at warm up or at less than 20% throttle? Am I missing out on a level of engine control (electronic) at any point by eliminating them?

Thanks!
Anyone have a thought on the question above? Thanks.

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Re: Kev's 1290 modification list

Post by mjsracing » Mon May 02, 2016 1:05 pm

I'm not the expert on this at all; however, I think your question is straightforward enough that I'll attempt an accurate answer.

The fuel injection system has two operations modes, closed loop and open loop.

The O2 sensors only come into play in the closed loop mode. Closed loop is employed for small throttle openings and lower engine rpm. Closed loop is used to minimize emissions.

In open loop mode, the O2 sensors are not used and the fuel injection system meters fuel based on a many parameters, such as throttle opening, rpm, temperatures, etc.

Bottom line: adding O2 eliminators only impacts closed loop mode. Closed loop only happens at low throttle openings. Adding a bit more fuel is not harmful to the mechanics of the engine and may be safer (cooler) at the possible expense of more fuel consumption and more emissions.

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Re: Kev's 1290 modification list

Post by AOAM » Mon May 02, 2016 10:29 pm

Thanks for your response.

I've heard of some bikes using closed loop mode for up to 80% of normal operation. So, I wanted to confirm that what I'm changing really only affects where my bike performs poorly - at low RPM and part throttle. I'll try to research further how often and what ranges the 1290s use closed loop mode.

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Re: Kev's 1290 modification list

Post by kevxtx » Tue May 03, 2016 11:35 am

mjsracing wrote:I'm not the expert on this at all; however, I think your question is straightforward enough that I'll attempt an accurate answer.

The fuel injection system has two operations modes, closed loop and open loop.

The O2 sensors only come into play in the closed loop mode. Closed loop is employed for small throttle openings and lower engine rpm. Closed loop is used to minimize emissions.

In open loop mode, the O2 sensors are not used and the fuel injection system meters fuel based on a many parameters, such as throttle opening, rpm, temperatures, etc.

Bottom line: adding O2 eliminators only impacts closed loop mode. Closed loop only happens at low throttle openings. Adding a bit more fuel is not harmful to the mechanics of the engine and may be safer (cooler) at the possible expense of more fuel consumption and more emissions.
Pretty much spot on. :D

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