Re: Hero Honda Karizma ZMR

Maybe resetting the ecu and then riding her gently for some time before your next big ride can help you..

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Re: Hero Honda Karizma ZMR

Showroom guys know nothing and they show expertise in all fields. Even my friend who has bought ZMR 6 months before is getting 50+/- 5 kpl and showroom guys are dumbstruck.
When will hero hire guys that will promote their products rather than saying bad about them. Same even here. Here even showroom guys say the same.

See the SIAM website and even they have mentioned extreme/hunk mileage at 64 kpl and i have got 64 kpl two times, and reguraly get 50-55 kpl when riding at 75-85 kph.

But showroom guys will say extreme will give 40-45 kpl, even when i was doing free services my mechanic who does the service always exclaims at the mileage.

Not you but this two are great conspirators and they are tempting me to do also. But i am a tough nut to crack.

And regarding new ZMR the showroom guys do not know nothing as even though they have not mentioned in website but i have seen two splendor i smart on road here. So expect ZMR in february first week.

Re: Hero Honda Karizma ZMR

Ahhh.. tough nut to crack eh? Wondering what kinda nut

Jokes apart, i had to show the showroom guys the new ZMR and Karizma R pics.. they dont even know how the new bikes look like and yes, i too have seen the splendor i smart.. the bike looks neat..

Well, i learnt to have patience with my bike and she is returning the favor.. i used to ride her rashly but not always.. ince in a while when some so called biker tempted me.. these days, i say do all you want and i keep up with my speed.. hehehe.. keeps me relaxed, safe amd my bike in good shape

Also i have filled AX7 and it is definitely one of the best oils i have tried.. the bike engine doesn't make the knocking sound as it did in rimula R4.. smooth as butter and better gear shifts.. i would love to try the Shell Advance soon.. but before that the Veedol Swift..

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Re: Hero Honda Karizma ZMR

Coming from you both, its a big compliment and I'm proud.

No need to reset the ECU, its always in learning mode. Ride sedately for 100 kms and it would reflect on the pocket.

Re: Hero Honda Karizma ZMR

Folks, I had been tracking the mileage of my new ZMR since start with an Android application called FuelLog
https://play.google.com/store/apps/d...thaler.fuellog. I'm sharing some screenshots of my log, that I believe will give some good perspective.







As you can see there's a lot of variation.
Here are some points that are too be kept in mind:
1. All these calculations are from full tank to full tank.
2. The definition of full tank, however, is very vague, because the gas station guys always try to round off the rupees amount to the nearest multiple of 50 for their own convenience. They simply don't stop when I ask them to!
3. Due to the above and other sources of errors it's always advisable to go for larger fill ups, which minimizes these error percentages. However in my impatience to check mileage of my new bike I refueled rather frequently, so my reading has a higher margin of errors.
4. Yes, I know 62.96 kmpl sounds ridiculous on a 223cc bike. However, there were some favorable conditions on that trip like correct tire pressure, sedate riding almost entirely on highways @ < 90kmph, a very heavy usage of coasting and engine compression breaking, etc. I know it's still difficult to digest this figure, but well it is what it is!
5. The 35.51 Kmpl is so low because I got fleeced at the gas station. It dawned to me later that there's no way they could have filled in 8.87l petrol since my fuel meter was only 3 bars (<6l) short of full, but it was too late then


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Re: Hero Honda Karizma ZMR

BTW, can some one explain in details about the ECU resetting? Particularly, how does the ecu actually apply the learnt driving pattern? Does it by default optimize for performance, or for fuel economy? how do I know what the ecu has learned so far? How does one know that ecu resetting will not worsen things, in case the learning so far was better than default?
Also, how does the real time mileage indicator actually work internally?

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Re: Hero Honda Karizma ZMR

Basic EFI systems have 2 modes, Open loop and Closed loop.

In closed loop the ECU will control fuel to 14.7:1 mix, this is used for idle and all low load applications.

Once you hit a set of defined figures, generally load and throttle position,it will then operate in open loop mode, and will follow a 2d or 3d graph of air fuel ratios for load and RPM, then give the fuels thats programmed for fuel trim setting where it will trim the fuel for different mode like idle, cruise and Wide Open Throttle, when you reset the ECU you force those figures to reset and get re learnt.

Source: CBR 250 global forum!

Presuming RTMI works on throttle response + current speed = Distance, correct me if i am wrong.
but correct way to major mileage would be tank full to tank full method or reserve to reserve as we were discussing this on last Saturday.

Re: Hero Honda Karizma ZMR

How do I do that?

Re: Hero Honda Karizma ZMR

[MENTION=32908]AmoghDox[/MENTION] has given a bhery technical answer that simply went over my tiny brain.

In layman terms, the ECU constantly learns over time. What it may learn today maybe overwritten with new data tomorrow.

Sample this, if I rip my bike for 100+ kms and then attempt city riding, the throttle response is sharper. That's because of the ripping I did recently on the highway, which has its parameters stored in the ECU. It becomes normal within a day or two in bumper to bumper city riding.

You can never screw the ECU learning because the only way it learns is *how you ride*. You ride aggressively, it maps you to performance and if you're a boring sedate rider, it understands that this uncle jee needs mileage.

You reset the ECU by disconnecting the battery terminals for 30 mins or above.

Re: Hero Honda Karizma ZMR

I was told, to reset an ECU we will need to disconnect the terminals of battery and leave it out for half an hour or more. But according to divya, the ECU learns the riding without need of reset. Not sure how it works, though I remember once i had a very bad FE because i left the battery for charge and went on a long ride the same day. The bike gave a poor mileage of 44 kmpl on highways.. of course there were other reasons like the low air pressure, riding at high speeds of 125 kmph constantly for more than 30 mins.. but after that, the bike in city gave me pretty decent mileage figures..

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Re: Hero Honda Karizma ZMR

[MENTION=41586]Divya Sharan[/MENTION] how does resetting ECU/ disconnecting battery would be affecting on current running odo meter, will it reset the odo mileage as well or it will only reset the welcome message or stuff like that?

I read some where that you only need to reset the ECU when you are getting as you mentioned above
Worst FE
Poor performance etc

Re: Hero Honda Karizma ZMR

Disconnecting the Battery Terminals only reset the Trip Meters and the Clock. Other than that everything stays to as it is

We generally don't reset the ECU unless as mentioned by you. But some times, we don't have a choice but to give the battery for charge so at this point of time, the ECU gets reset. I had to get the battery recharged a number of times as the battery died off most of the time thanks to a kaput Stator Plate Now the bike is running fine decent in City and highway FE

Re: Hero Honda Karizma ZMR

Karizma R & ZMR production stopped!!!

ZMA R is going on very high demand no show room has stock of it in the southern districts of TN bookings are for R v2 on march

Re: Hero Honda Karizma ZMR

Source broder?

Re: Hero Honda Karizma ZMR

one of my friends tried getting a ZMA R in pollachi, then he tried Coimbatore, then Tirupur and erode too.. only a couple of ZMR are available.. ZMA R are now bought from distant rural show rooms