RE: CB1100 Idle speed instability problem

[Lord Popgun]

I don’t know exactly, but I would imagine he has a program that will write to the eprom using a PC, or maybe he has a Honda MCS to do it. How he generates the file I don’t know.

Tuners, like you see on TV or the movies like the Fast and Furious franchise write new files into the ECUs to improve performance. People with diesel trucks, etc, like to do that too, although I think the .gov is not liking that...

You can see in the pics in a previous post that the MCS is loading the file into the eprom. If Don G. had that file I have no doubt he could load it into the ECU.

Back in the day is was not uncommon to have to remove the eprom and plug it into an eprom burner. The device would then write whatever file you had provided. Then you put the eprom back in its socket and carried on.

[the Ferret]

what is an eprom?

follow up question E11even.. given your age why didn't you buy a 600 supersport, (more in line with your age group) which would undoubtedly run more than 112 mph, and be much quicker as well, rather than an old man's retro UJM which everyone KNEW was over weight and under powered given the capabilities of today's manufacturers?

BTW when I was 27, I bought a new 1977 KZ1000 Kawasaki which had 85 hp, weighed about 550 pounds and had a 12.8 quarter mile time @ 103 mph (numbers sound familiar? lol) ...but at the time it was one of the most powerful bikes on the planet. Also at 27 I found out what the top speed was on every bike I rode lol.( It was rare to find that that would go more than 13 mph faster than a CB 1100 will go). So I understand the need to push the boundaries.

and yes my grand daughter is but a few years younger than you, and I took no offense.

[Lord Popgun]

erasable programmable read-only memory

[max]

eprom is an acronym ( abbreviation ) for; Erasable Programmable Read Only Memory.
It consists of a special memory chip which is programmed under special circumstances which normally never happen
in a working computer and can not be accidentally changed by the computer, it's pretty safe once programmed.
The memory is in fact a lot of fet transistors that get "set" to either a one or a zero, ( conduct current or not ) they all have a specific place in the chip and can be "addressed" by a request to read the contents of that address, ( an instruction: do this....... , a value of something "max speed", a message to the user "fault code" etc. ).

In our case it controls how our bike behaves and precisely sets the rules how the bike responds, wrong instruction; it mis-behaves according to that instruction.

The eprom can be removed, re-used in another piece of equipment ( ecu ) and re-programmed, since the transistors remain in their on or off state there is no need for a battery to "refresh" the transistors like is done with conventional "ram" memory in a pc, which loses it's contents when the power is switched off ( Random Access Memory ).

However these days the use of an Eeprom ( Electronically Erasable Programmable Read Only Memory ) is used instead, the advantage is that it can be programmed and re-programmed when the computer is running ( but in a special state to access the memory only ) without the need to replace the chip ( when it's soldered inside the waterproof e.c.u. ).
So a usb programming lead is used to write new software into an e.c.u.

As lord Popgun emeritus explained.

Which brings me to the next question;

Since this thread has elaborated somewhat is it possible to extract the relevant parts like pictures and ways to repair the new methods in a compact Read Only format under a similar title such as; cb1100 idle speed instability repair advice?

[E11even_Hunnit]

what is an eprom?

follow up question E11even.. given your age why didn't you buy a 600 supersport, (more in line with your age group) which would undoubtedly run more than 112 mph, and be much quicker as well, rather than an old man's retro UJM which everyone KNEW was over weight and under powered given the capabilities of today's manufacturers?

BTW when I was 27, I bought a new 1977 KZ1000 Kawasaki which had 85 hp, weighed about 550 pounds and had a 12.8 quarter mile time @ 103 mph (numbers sound familiar? lol) ...but at the time it was one of the most powerful bikes on the planet. Also at 27 I found out what the top speed was on every bike I rode lol.( It was rare to find that that would go more than 13 mph faster than a CB 1100 will go). So I understand the need to push the boundaries.

and yes my grand daughter is but a few years younger than you, and I took no offense.

600cc Supersport was actually my very first "street bike" at 21. She was fun until she wasn't, when she wasn't enough I had to upgrade in under a year to this beast.. the one and only vehicle I've bought brand new till today lol

Still wasn't enough as-is so I had to dump a few grand in upgrades to get her where I wanted, including a $1,700 Graves Titanium low mount system. The sound on this thing was out of this world

At this point she was more than enough power anyone would want/need, enough to make me sh*t my pants at times. Absolutely WONDERFUL bike.
For those wondering, 164MPH was the top speed I ever hit on the R1

We parted ways last November since I've been out West for a few years now and she was just sitting back home in FL. I was nearly depressed the day her new owner picked her up, even being 3,000 miles away

Sure I could've had it shipped, but quite frankly I didn't want to deal with the stress of owning these highly targeted bikes, also these NorCal freeways got so many potholes it just didn't make sense in my mind. Then you factor in your mortality awareness that inevitably comes with the years, which made me appreciate and look for other bikes that aren't geared to be be pushed 100% of the time in order to really shine.

All that being said I still have a craving for speed, and although the CB is a completely different beast, we all know it's capable of more

[Lord Popgun]

Your’re really Ensign Chekov aren’t you? good thing you are wearing a gold shirt as we know what happens to red shirts that beam down...

Max, I’m glad you typed all that. I figured they could Google eproms if interested and no way was I going to toss in EEPROMS!

[Cormanus]

And you’re apparently Lord Popgun ‘emeritus’. From what have you retired?

[peterbaron]

And you’re apparently Lord Popgun ‘emeritus’. From what have you retired?

Thank you, I was going to ask the same question....

[Cormanus]

eprom is an acronym ( abbreviation ) for; Erasable Programmable Read Only Memory.
It consists of a special memory chip which is programmed under special circumstances which normally never happen
in a working computer and can not be accidentally changed by the computer, it's pretty safe once programmed.
The memory is in fact a lot of fet transistors that get "set" to either a one or a zero, ( conduct current or not ) they all have a specific place in the chip and can be "addressed" by a request to read the contents of that address, ( an instruction: do this....... , a value of something "max speed", a message to the user "fault code" etc. ).

In our case it controls how our bike behaves and precisely sets the rules how the bike responds, wrong instruction; it mis-behaves according to that instruction.

The eprom can be removed, re-used in another piece of equipment ( ecu ) and re-programmed, since the transistors remain in their on or off state there is no need for a battery to "refresh" the transistors like is done with conventional "ram" memory in a pc, which loses it's contents when the power is switched off ( Random Access Memory ).

However these days the use of an Eeprom ( Electronically Erasable Programmable Read Only Memory ) is used instead, the advantage is that it can be programmed and re-programmed when the computer is running ( but in a special state to access the memory only ) without the need to replace the chip ( when it's soldered inside the waterproof e.c.u. ).
So a usb programming lead is used to write new software into an e.c.u.

As lord Popgun emeritus explained.

Which brings me to the next question;

Since this thread has elaborated somewhat is it possible to extract the relevant parts like pictures and ways to repair the new methods in a compact Read Only format under a similar title such as; cb1100 idle speed instability repair advice?

Max, this is an attempt to do that. Is it what you had in mind, or have I gone too far?

[Lord Popgun]

And you’re apparently Lord Popgun ‘emeritus’. From what have you retired?

Thank you, I was going to ask the same question....

Thank you, I was going to ask the same question....
I’m not getting this. What am I missing?

And no questions about what a FET is?