What the hell is this shit?

Really?
That is odd because the PAIR dumps into the exhaust ports, not the combustion chambers, so the vapors will just shoot out the tail pipe. I suppose the exhaust may be hot enough to burn em up. I guess it is better than dumping them into the intake manifold where they would pollute the air/fuel charge.

Either way, I pulled it all off and capped the holes above the exhaust ports with no negative effects to report.

 

I disabled my pair system and took O2 sensor readings, the change is so minimal that I had to use a wideband sensor that was way more sensitive to the changes. I still have no reliable way to proove if it makes a difference to power but I cant feel a ridability issue so Im in process of removal this winter.

 

Pair system is not plugged, how could it be? it only has about 5000kms on it before i disabled it. I had to reenable it for the sask inspection but since im here for a long time im going to take it off. as for why I couldnt read it, stock O2 sensors are just better than junk, the wideband I use or tuning can read changes in the 0.001volt scale, thats 100 times more sensitive than stock of 0.01volt changes. The changes the pair system can inflict is to provide a oxygen rich exhaust for the O2 sensor to read thus increasing the fuel charge without increasing the oxygen in the cylinder. this rich environment burns slower and cooler while providing a longer pressure wave. this increased wave to piston contact thus produces more power, the only thing is I have not seen if its torque or HP or if it just allows the engine to burn fuel cooler to pass emmissions testing (makes less NOx's). All of this can be done with variable valve timing (our system is not valve timing but adding a valve to provide better breathing). without some special devices to read the actual cylinder its almost imposible to tell and honda wont.

 

I had an 1986 zL 600 that was a CA bike and it was garbage. Had the charcoal canister and all that other crap. When I traded it in and went to a Nighthawk, it was a revelation :rip: nighthawk...

I believe that back in those days, the CA bikes had the canisters, different cams, different black boxes, etc. Mine used to get vapor lock alot when I would fill up at petrol stations as I used to fill it all the way to the neck. Total junk...

On my gen 3 bike, I plugged the air box with plugs and cut and welded up the old steal lines on the cylinders. DONE DEAL, and carbs are easy as shit to take off bike, when you have to (thanks TOE)...

Cheers....

 

As I have an 87 700f2 I can assure you that
nothing is injected into the exhaust.
They are just one way valves that open from the vacuum caused when the throttle is opened.Thus allowing the stored vapours that are trapped in the canister to be recycled through the combustion cycle.
After a run all the gases from the hot oil is not allowed to escape through the usual exit point ( the airbox ) by the valves that are now shut, but diverted to the canister.

 

Can you just plug the pair valve lines that go to the carbs..??

 

Yah but you still have all that messy plumbing in there. It will work though. It is all hidden behind the fairings so I suppose it is a matter of personal preference.

 

Exactly what I did on my 4G.