Pairs mod

[Ellis]

Hi people first post on this site.
I recently did the pairs mod on my 2018 model I blocked the pipe from the air box and unplugged the connection to the valve. Upon start up the management light stayed on so I back tracked and plugged the valve back in  The light still stayed on so I removed the blockage in the valve management light went out. Any thoughts ?

[Skids]

Originally Posted by Ellis

Hi people first post on this site.
I recently did the pairs mod on my 2018 model I blocked the pipe from the air box and unplugged the connection to the valve. Upon start up the management light stayed on so I back tracked and plugged the valve back in  The light still stayed on so I removed the blockage in the valve management light went out. Any thoughts ?

The PAIR Delete mod (completely removing the PAIR system) worked well on the previous engine (02-13 VFR800) to help reduce some of the hesitancy in the throttle at low rpm. The Crossrunner (with the new 14+ engine from the new VFR800F) doesn't seem to have the same issues, at least nowhere near as bad so I have not considered making any engine adjustments at all, other than fitting a clearer and lighter end can.

As this is a different engine, I don't know if this mod works the same as on the previous engine.

[Ellis]

Thanks for that I thought the same that throttle hesitation wasn’t that bad but I went ahead and done anyway lesson learned. While I had the tank of I bought a replacement air box, removed the snorkel and drilled two 40mm holes above the rear throttle bodies I am using a piper cross air filter and an Arrow end can. As soon as I can get out in the country side I’ll let you know how she breaths and sounds.

[Skids]

Originally Posted by Ellis

Thanks for that I thought the same that throttle hesitation wasn’t that bad but I went ahead and done anyway lesson learned. While I had the tank of I bought a replacement air box, removed the snorkel and drilled two 40mm holes above the rear throttle bodies I am using a piper cross air filter and an Arrow end can. As soon as I can get out in the country side I’ll let you know how she breaths and sounds.

Please do.

Why replace the airbox?

I've never heard of the 40mm hole mod before; where did you hear about that?

[Haddo]

Shouldn't have any problems on your model the efi will adjust to your riding ie. If you give it a gut full for a while the fuel will adjust, then when you slow down it will take some time to re- adjust hence snatching @ low speed. Bit like the older efi 20 minut retune. I'd say the engine light was a AI from exhaust miss match.I have a Arrow on my 15 & no retune or mods required, it will sort itself out. Going up a couple of teeth on the rear changes alot unless you want to ride @ 200kmph everywhere.

[Ellis]

I replaced the air box because I didn’t want to destroy my original.
The two 40mm holes above the rear throttle bodies was just an idea Of mine to get the rear cylinders to breath evenly as any air that enters the box seems to be nearer the front two cylinders also you can’t beat that air box rasp as you open the taps.

[Skids]

Originally Posted by Ellis

I replaced the air box because I didn’t want to destroy my original.
The two 40mm holes above the rear throttle bodies was just an idea Of mine to get the rear cylinders to breath evenly as any air that enters the box seems to be nearer the front two cylinders also you can’t beat that air box rasp as you open the taps.

Hey, I'm no design engineer but I reckon after 22 years of development, Honda will have made that airbox about as efficient as they can, with the correct amount of air going to each inlet. The noise may be better, but since they removed the flapper valve, I don't think the intake will ever sound as good as when that was removed.

[Ellis]

Honda also had ever evolving noise and emission regulation to contend with, so I figured there might be some room for improvement flouting regulation.If none of it works and It runs like a Foden then I’ll return it to standard and no harm done eh.
I recon a few weeks of lockdown in the Gararge with my CR has got to be better than toshing the house over with the the missus in your ear hole any day.

[Skids]

Originally Posted by Ellis

Honda also had ever evolving noise and emission regulation to contend with, so I figured there might be some room for improvement flouting regulation.If none of it works and It runs like a Foden then I’ll return it to standard and no harm done eh.
I recon a few weeks of lockdown in the Gararge with my CR has got to be better than toshing the house over with the the missus in your ear hole any day.

I reckon the best thing you can do is get a non-Euro 5 end can, unless you really want to delve into technical stuff.

My DAM end can should arrive within a couple of weeks.

[Haddo]

I take it you removed the baffle from the Arrow, if so next step with full airbox mods I can think of would be headers less cat converter & AI then dyno.