(01-12-2022, 01:55 PM)Bazbro_imp Wrote:

(01-12-2022, 09:29 AM)PowerDubs_imp Wrote: Are you adding fuel in any method? Removing the cats will lean out the mixture...and these bikes run lean enough as is.

I'm not removing the catalysers, PD.
The Wyvern paperwork shows a picture of a catalyser along with the exhaust pics, which I'm assuming is fitted, because the paperwork also includes a Certificate (of Conformity?). It's all in Japanese at the moment, but I'll translate it tomorrow.

It's just the O2 Sensors that I'm not fitting, as per the Forum discussion link. I know it might be controversial, but I've read the evidence and, as it's VERY common to remove these Sensors (on a great many different 'bikes. with corresponding smoother running) I think it worth doing.
(And I've just noticed that I mis-wrote "dissembling" instead of "disassembling" in my write-up - a very important difference! I can't edit it out now...) Red Face

(01-13-2022, 04:27 AM)Tev62_imp Wrote:

(01-12-2022, 01:55 PM)Bazbro_imp Wrote:

(01-12-2022, 09:29 AM)PowerDubs_imp Wrote: Are you adding fuel in any method? Removing the cats will lean out the mixture...and these bikes run lean enough as is.

I'm not removing the catalysers, PD.
The Wyvern paperwork shows a picture of a catalyser along with the exhaust pics, which I'm assuming is fitted, because the paperwork also includes a Certificate (of Conformity?). It's all in Japanese at the moment, but I'll translate it tomorrow.

It's just the O2 Sensors that I'm not fitting, as per the Forum discussion link. I know it might be controversial, but I've read the evidence and, as it's VERY common to remove these Sensors (on a great many different 'bikes. with corresponding smoother running) I think it worth doing.
(And I've just noticed that I mis-wrote "dissembling" instead of "disassembling" in my write-up - a very important difference! I can't edit it out now...) Red Face

I'm sure I've read other 2017MY (an on) owners not getting any benefit from the 02 sensor delete on this forum? Can anyone else recall those posts? Found it, link below.

http://cb1100forum.com/forum/showthread.php?tid=6988&page=14&highlight=eliminator+kit

(01-13-2022, 08:42 AM)GoldOxide_imp Wrote: Is it unreasonable to add a heat tolerant connector to each of them in case one wishes to reconnect them?

(01-13-2022, 06:29 AM)Bazbro_imp Wrote:

(01-13-2022, 04:27 AM)Tev62_imp Wrote:

(01-12-2022, 01:55 PM)Bazbro_imp Wrote:

(01-12-2022, 09:29 AM)PowerDubs_imp Wrote: Are you adding fuel in any method? Removing the cats will lean out the mixture...and these bikes run lean enough as is.

I'm not removing the catalysers, PD.
The Wyvern paperwork shows a picture of a catalyser along with the exhaust pics, which I'm assuming is fitted, because the paperwork also includes a Certificate (of Conformity?). It's all in Japanese at the moment, but I'll translate it tomorrow.

It's just the O2 Sensors that I'm not fitting, as per the Forum discussion link. I know it might be controversial, but I've read the evidence and, as it's VERY common to remove these Sensors (on a great many different 'bikes. with corresponding smoother running) I think it worth doing.
(And I've just noticed that I mis-wrote "dissembling" instead of "disassembling" in my write-up - a very important difference! I can't edit it out now...) Red Face

I'm sure I've read other 2017MY (an on) owners not getting any benefit from the 02 sensor delete on this forum? Can anyone else recall those posts? Found it, link below.

http://cb1100forum.com/forum/showthread.php?tid=6988&page=14&highlight=eliminator+kit

I'm sure I've read other 2017MY (an on) owners not getting any benefit from the 02 sensor delete on this forum? Can anyone else recall those posts? Found it, link below.

http://cb1100forum.com/forum/showthread.php?tid=6988&page=14&highlight=eliminator+kit
I thought long and hard about this, Tev.
The sensors on the Wyverns are right up, under the engine, on the crosspieces between the pipes - IMPOSSIBLE to get at without dropping the system.
I only want to do this job once, so... As these sensors seem only for slow-running testing exhaust (a la VW!) but their removal actually improves slow speed control, I made my decision now rather than later. It may be that their removal makes no difference, but...

Here is the positioning of the sensors on the Wyverns...

(01-13-2022, 01:16 PM)PowerDubs_imp Wrote: Having the cats should slow down airflow enough to not ‘need’ to worry about fueling causing heat issues.

If you aren’t using the O2 sensors- leave them out and plug the holes. If you just unplug them- they will carbon coat and foul.

Good luck on the build- bike will be cool when it is done.


Sent from my iPhone using Tapatalk

(01-14-2022, 10:27 AM)Bazbro_imp Wrote:

(01-13-2022, 01:16 PM)PowerDubs_imp Wrote: Having the cats should slow down airflow enough to not ‘need’ to worry about fueling causing heat issues.

If you aren’t using the O2 sensors- leave them out and plug the holes. If you just unplug them- they will carbon coat and foul.

Good luck on the build- bike will be cool when it is done.


Sent from my iPhone using Tapatalk

Thanks, PDubs.

I'm confused about the need to remove the sensors? Why necessary? What's different between them if they're working or not?

"Good luck on the build- bike will be cool when it is done."
Thanks.
I personally believe that the CB1100 would have been a LOT more popular if the "Whitehouse/Wyvern treatment" had been a standard model/option from the beginning.