MyBB Motorcycle Owners Thread

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CT_Biker said:
EFI is way better. Way more tolerant. Most EFI set up's are 'closed loop', there are O2, Throttle Position, MAF/MAP sensors to monitor air going in and the O2(Temperature and speed too in some cases) levels of air going in and the O2 content of air going out too. All this means is that there is constant adjustment to the amount of fuel input into the engine and monitor and adjust ignition timing, so you get a level balance of good fuel economy and power output.

Something you should note that EFI set ups produce more power and torque, and something that I like about aftermarket EFI systems is that I can 'tune for' peak power, peak torque or balance the two - and it is way easier as I have all of the data in front of me, in real time. I can do the same with a set of side drafts, but I need to tune and drill(I have really small drill bits for this) fuel and air jets to get the car to run in various environments without needing to change the jetting of a carb.
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Ahh I see, so absolutely no advantages to carbie then, quite rare that I think. Where a new motoring technology is completely in each and every way better than its predecessor.
 
SykomantiS said:
Nope. Why would it?
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Often the install of the exhaust system will place the O2 sensor too far up or down the exhaust tract which throws and error on the ECU. Not quite enough to throw the bike into limp mode, unless your installer already fitted a power commander and tuned the bike with the installation of the new pipe.
 
CT_Biker said:
Often the install of the exhaust system will place the O2 sensor too far up or down the exhaust tract which throws and error on the ECU. Not quite enough to throw the bike into limp mode, unless your installer already fitted a power commander and tuned the bike with the installation of the new pipe.
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I don't believe there is an O2 sensor on the exhaust (oem or aftermarket) but I'll have to check. A quick google and a hit from the gixxer forum confirms this.
 
CT_Biker said:
Often the install of the exhaust system will place the O2 sensor too far up or down the exhaust tract which throws and error on the ECU. Not quite enough to throw the bike into limp mode, unless your installer already fitted a power commander and tuned the bike with the installation of the new pipe.
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Should only do that if the catalytic converter was removed though shouldn’t it?
 
CT_Biker said:
IIRC the O2 sensor is right before the Cat.
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Yeah but it's usually in line with the same section of the headers, so if it's a truly full system the cat would need to come out.

if it's not really a full system most of that stays behind and then shouldn't give an error.

At least not for the bikes I've had anyway.

My Buell was a different nightmare not having a cat in the first place and running both a closed and open loop EFI system.

Fortunately, it was easy to plug into and I literally had it tuned from across the world while riding around with a laptop on my back.
 
gamer16 said:
Ahh I see, so absolutely no advantages to carbie then, quite rare that I think. Where a new motoring technology is completely in each and every way better than its predecessor.
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Well there is cost. EFI systems are not cheap to put in and not cheap to replace. And more often than not in modern vehicles the ECU runs a number of systems together so it would be silly to leave it out of the equation for only some stuff.

On the other hand over the light of the vehicle they require little to no maintenance and also rarely fail.
 
SauRoNZA said:
Yeah but it's usually in line with the same section of the headers, so if it's a truly full system the cat would need to come out.

if it's not really a full system most of that stays behind and then shouldn't give an error.

At least not for the bikes I've had anyway.

My Buell was a different nightmare not having a cat in the first place and running both a closed and open loop EFI system.

Fortunately, it was easy to plug into and I literally had it tuned from across the world while riding around with a laptop on my back.
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The reason why I asked if the O2 sensor was removed or not, AFAIK the K6's were catalyzed and using a full closed loop, unlike the SRADS and K2 which used a speed density system.

If the O2 sensor is in the same place as it was before, even with the full system in place there is no guarantee that it will trigger a fault on the ECU. If that is the case with the OP's bike, his ECU will already be compensating for the full system.

The easiest way to check this is to check the plugs for how the fuel is burning.
 
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SauRoNZA said:
Well there is cost. EFI systems are not cheap to put in and not cheap to replace. And more often than not in modern vehicles the ECU runs a number of systems together so it would be silly to leave it out of the equation for only some stuff.

On the other hand over the light of the vehicle they require little to no maintenance and also rarely fail.
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These days the ECU consists of quite a few systems. Cars can CANBUS systems in place which monitor all vehicle functions. They operate and function on a way higher level than when I was taught by my dad.

Back then to change a fuel/timing map you needed to write an EPROM and solder it onto the board. Fun stuff. These days with the advent of ECU flashing and spliced in tuners its a bit more messy and easier to brick an ECU.
 
CT_Biker said:
The reason why I asked if the O2 sensor was removed or not, AFAIK the K6's were catalyzed and using a full closed loop, unlike the SRADS and K2 which used a speed density system.

If the O2 sensor is in the same place as it was before, even with the full system in place there is no guarantee that it will trigger a fault on the ECU. If that is the case with the OP's bike, his ECU will already be compensating for the full system.

The easiest way to check this is to check the plugs for how the fuel is burning.
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Yeah for sure, but there are still thresholds in play.

I know for instance BMW loses its mind if you fit the full system which is why they have a factory map just to adjust the thresholds.

I reckon that is the case for any generic map that isn’t specifically manually tuned for a given bike.

It makes it run well enough without breaking anything or throwing any errors, but not at its peak.
 
SauRoNZA said:
Yeah for sure, but there are still thresholds in play.

I know for instance BMW loses its mind if you fit the full system which is why they have a factory map just to adjust the thresholds.

I reckon that is the case for any generic map that isn’t specifically manually tuned for a given bike.

It makes it run well enough without breaking anything or throwing any errors, but not at its peak.
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From what i have noticed that is the case. A engines stock map will be safe, with a lot of headroom for automatic adjustment.

The second you start tuning, you start decreasing the headroom you have in order to tune the engine. The issue is not necessarily timing as that is limited per engine(compression, combustion chamber size and shape) and the grade of fuel. The biggest issue I always run into injector size and its duty cycle, most manufacturers leave about 20% headroom on the stock injectors...so this where the issue lies.
 
not to rub any noses in it, but, I love riding a bike, that 'out of the box' is 100% what I want - I couldn't be bothered fiddling with pricy after market mods
 
I could be wrong, but I believe the K5/6 was the last bike before Suzuki introduced cats- hence why the K7 onwards had dual exhausts. The motors were also euro III compliant only. I could be wrong on both but I doubt it. I do know the bikes had SET valves (basically a butterfly valve to help low end torque), but from memory, no other funny stuff like sensors or cats.
 
Bundu said:
not to rub any noses in it, but, I love riding a bike, that 'out of the box' is 100% what I want - I couldn't be bothered fiddling with pricy after market mods
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While I’m not a mod geek I do like to make changes here and there over time that you can take note of.

So I do still want to put a nice pipe on my RS in time but there pretty much all, just for a nicer noise but not anything too over the top.

One thing I however simply cannot fathom is selecting stuff off the factory parts list straight out of the box before I even tried it stock.

How can you spend so much money without getting any real sense of what it brings to the party?

The nicest thing about changing pipes is actually feeling and hearing the difference.
 
carstensdj said:
I'd check with other spares places? If you in Cape Town, maybe try Craigs?
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Thanks dude, they came through for me,
Nobody Important said:
War Eagle got back to me, unfortunately they cannot assist with the headlight covers without me coming in. They are in Pretoria and I am in Durban, so that's that.

I will just have to try and see if I can come up with a DIY solution, like I did with my panniers.
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I did that will my custom nose fneder on my YBR, justed slotted a lens infornt of the bulb, but before the plastic?

Maybe try this guy, he might ship to you
https://goo.gl/maps/pM6CuydrQ1ZXi6Tc7
If not I might be able to pick up the piece and post it to you.
 
Tpex said:
Thanks dude, they came through for me,

I did that will my custom nose fneder on my YBR, justed slotted a lens infornt of the bulb, but before the plastic?

Maybe try this guy, he might ship to you
https://goo.gl/maps/pM6CuydrQ1ZXi6Tc7
If not I might be able to pick up the piece and post it to you.
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You made the curved plastic lens cover by yourself? Mind posting some pics?

The link is for Adventure Rider, I will drop him a mail. I bought the panniers and DIY bracket kit from him. So silly of me for not thinking of emailing him.
 
Nobody Important said:
You made the curved plastic lens cover by yourself? Mind posting some pics?

The link is for Adventure Rider, I will drop him a mail. I bought the panniers and DIY bracket kit from him. So silly of me for not thinking of emailing him.
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LOL no, he sold be like a 4cm wide round lens and I popped it in

IMG_20190619_181330.jpg
 
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