Rough running finaly sorted.

[Bendy toy]

Soo sorry.
Should have said in my experience, it's the best single mod you can make.
Should be flattered that someone remembers what I actually said.
Although, being objective about it, I still believe it's the best mod you can make.
Don't need a dyno to set it up, don't need to travel to get it done, easily fitted and removed to resell when getting rid of that 'keeper'. Wave bye bye to that £350 with your remap.
Is it better in terms of power and flexibility?
Don't know, same as everyone else. But I honestly doubt that there's unlikely to be any noticeable advantage in performance with a remap over AF-XIED.
There's obviously a limit on how much of a power increase is available by changing fuelling.
Maybe it's not as good as an AF-XIED!! That's me going to GS Hell.

This all makes sense though the remap might allow other features to be changed as well as fuelling. Whether this adds up to a value for money who can say. It would be great to see one bike mapped and tested, then put back to standard and AF'd and see the pros and cons of both.

I guess the AF-XIED suits those who like to "tinker" with the bike or are a long distance from the acknowledged remap tuner.
For those who want to fit and forget the remap might may be the better way to go.

The other issue is insurance.

 

[Bendy toy]

Cheers.
I just feel a little hard done by that I can't get better than 95ron in my little country.

Sent using hocus pocus........... boo!

That would be where octane boosters come in. Vizard explains how the octane change can be different from expected. He says that top end fuels contain up to 20% toluene which has an octane of 120 (IIRC).

 

[younger06]

Using boosters is a pain, you generally have to wait until you've an empty tank all the time in order to get the mix ratio correct.
Would love to have some 99ron available at the pumps but alas it's not to be......... some government ecomentalist put paid to that some years ago!!

Sent using hocus pocus........... boo!

 

[Roger 04 RT]

He talks about finding the correct octane values from about 1 hour into the lecture. But the A-Series engines under discussion have no knock sensors. He mixes fuel to have just the right octane and explains blending values.

An engine with knock sensors will automatically adjust the spark timing to suit the fuel. I know very little about the GS-911 but if you can read the spark advance setting with the engine in use you will be able to work out the best fuels or additives to use. Someone who knows the GS-911 might know if that's a usable feature.

Bendy, The GS-911 doesn't report any spark timing adaptation values so I don't know if you could tell from the spark timing values. The advance maps are quite complex and when I've ridden and plotted the values, for any rpm and TPS value, there can be multiple different spark advances even on a bike without knock sensors. So comparing two data sets at different octanes might be looking for a needle in a haystack.

 

[Roger 04 RT]

This all makes sense though the remap might allow other features to be changed as well as fuelling. Whether this adds up to a value for money who can say. It would be great to see one bike mapped and tested, then put back to standard and AF'd and see the pros and cons of both.

I guess the AF-XIED suits those who like to "tinker" with the bike or are a long distance from the acknowledged remap tuner.
For those who want to fit and forget the remap might may be the better way to go.

The other issue is insurance.

I see it the other way around: remapping suits those who like to tinker and lambda-shifting the O2 (which adds a simple % to fueling) is for the fit-and-forget crowd.

Remapping can alter many parameters other than fueling: spark advance, dwell, acceleration enrichments, etc. But in most cases one is in the dark about what is actually done by the remapper. And for anything other than timing or fuel, it's hard to imagine a remapper has the time or knowledge to improve on the factory. Also, the one thing they can't do in the surging-zone is add fueling, which is a known fix, since the closed loop operation of the ECU quickly reverts fueling to that specified by the O2 sensor.

In contrast, adding a lambda-shifter is like changing the setting on a thermostat. You set it and forget it, leaving the bike's ECU in stock condition but with a few percent more fuel.

But I concede this is all in one's point of view.

 

[comberjohn]

+1 on the tweaking idea, Roger.
Think I've moved the dials twice since I've had them, only by one 'click'. Didn't notice much difference.
They really are a fit and forget thing. After all, it's the ecu that's doing the tweaking while you ride.
The PCV was more 'involving'.

 

[Bendy toy]

I have a Power Commander V. it works of course and the bike is nicer to use, but it runs open loop so can't adapt when (such as) the exhaust back pressure changes. Fitting and removing bafles affect the air/fuel mixture.

Mine was bought used and set up so not a big cost but if buying new the AF-XIED has to be the better option.

 

[oldnfat]

Didn't you recently pick Bendy up on commenting about something he had no experience of? Yet you are stating as fact (not your opinion) that the AF-XIED is the best single mod, yet you haven't tried a Hill Top remap.

If fact I think your comment was that his words had "no validity"

Strange..

Good spot Mr Bean....STONE HIM!!!

Anyway, back to the conversation in hand, having read a number of Rogers posts and having had a Hiltop remap on my last TC (which was great), I decided to ask my brother in law in the US to buy me the AF-XEID units as a birthday present. no additional duty as they were a gift!

Done about 400 miles on them now. At first I was slightly disappointed as there was not the instant uplift I experienced with the remap. I also knew they need some time to learn so after a couple of tanks I have to say I have what seems to be the best fuelled GS ever. Is it better than a remap? To honest, without riding the bikes back to back , I can't tell. What I can say is that there is no snatch on and off throttle. Pulls like a train from any revs. Much smoother with the 4500rpm hole all but gone as is the harshness I was experiencing at 5000-6000 rpm.

Thoroughly recommended and potentially cheaper than a remap if you come to sell the bike.

So, having had my previous 2 GSAs remapped by Hilltop to great effect, I would now go down the AF-XIED route.

Hopefully this meets the "Bean" standard.

 

[younger06]

Someone remind me again......what is the cost of this AF-XIED witchcraft??

 

[comberjohn]

At last!! We have someone who has had a remap and uses the AF XiED units.
I'm very interested to hear this as you always think, should I have gone for a remap?
Like I've said, I'm sure the remapping is a good option, but it's nice to have an alternative path to take.
When I got mine, Roger told me that the guy in Beemer Boneyard reckoned at least a thousand miles to fully adapt and, with hindsight, I would agree. They'll get better as the miles go on.
And Keith(younger06), I'M FED UP TELLING YOU THAT THIS IS WHAT YOU NEED!!
They cost me about £350 including vat and taxes. About the same as a remap but great for lazy gits who don't want to have to across the water.

 

[younger06]

At last!! We have someone who has had a remap and uses the AF XiED units.
I'm very interested to hear this as you always think, should I have gone for a remap?
Like I've said, I'm sure the remapping is a good option, but it's nice to have an alternative path to take.
When I got mine, Roger told me that the guy in Beemer Boneyard reckoned at least a thousand miles to fully adapt and, with hindsight, I would agree. They'll get better as the miles go on.
And Keith(younger06), I'M FED UP TELLING YOU THAT THIS IS WHAT YOU NEED!!
They cost me about £350 including vat and taxes. About the same as a remap but great for lazy gits who don't want to have to across the water.

Cheers John.
Did you put up a post on the install of the AF-XIED units?? Would love to see pics of them installed and what extra wiring/gubbins are visible.

 

[comberjohn]

Enjoy.
http://www.ukgser.com/forums/showthread.php/418381-Standard-vs-PCV-vs-AF-XIED

 

[Bendy toy]

What about the insurance issue?

 

[younger06]

Enjoy.
http://www.ukgser.com/forums/showthread.php/418381-Standard-vs-PCV-vs-AF-XIED

That's the one. Cheers John.

 

[younger06]

What about the insurance issue?

Declare it, I can't see it making much of a difference.

 

[oldnfat]

At last!! We have someone who has had a remap and uses the AF XiED units.
I'm very interested to hear this as you always think, should I have gone for a remap?
Like I've said, I'm sure the remapping is a good option, but it's nice to have an alternative path to take.
When I got mine, Roger told me that the guy in Beemer Boneyard reckoned at least a thousand miles to fully adapt and, with hindsight, I would agree. They'll get better as the miles go on.
And Keith(younger06), I'M FED UP TELLING YOU THAT THIS IS WHAT YOU NEED!!
They cost me about £350 including vat and taxes. About the same as a remap but great for lazy gits who don't want to have to across the water.

Yep, that's what the guys at BB told me...about 3 tanks they reckoned. Interestingly my fuel consumption has improved over the last couple hundred miles by 2-4 mpg. I will need more miles to get a meaningful reading but early indications are good. In truth I "feel" the result is better than the remap but that may be because I want it to be. The harshness as 5000 rpm is almost gone, something the remap didn't achieve. Having said that the remap was on a different bike and they all are slightly different.

Took 30 mins to fit...including tea and talk with a pal so really is simple to do.

Will report back after a trip in two weeks time that will put 1000 on the bike.

 

[gerarddwatts]

Got my AF XIED bits today....not a catchy name is it?

No VAT, no duty, just an envelope in the post....

Now to fit.

 

[comberjohn]

Another one!
Yeah, told Roger it was a crap name.
Easy to fit, just be careful removing the covers underneath the heads when plugging the connectors into the O2 sensors. The bolt heads can wring off.
Keep us posted on your impressions.

 

[Roger 04 RT]

And I told the manufacturer, Nightrider, that too. However, Nightrider's biggest market is Harley and for years they've had a range of fueling devices that work with that ECU: XIED, ViED and AF-XIED.

The AF-XIED was modified to work in the BMW product line and he kept the name.

Www.nightrider.com

 

[Gordon T]

Just ordered my AF-XIED set. Will let you know how it pans out when they arrive.