R1 airvalve

[T/a Pierre]

I have an 2006 R1.

Two Brothers slip-ons, with the CAT removed. BMC aftermarket airfilter with PCIII.

Now, that airvalve, forgot the name now sorry guys. But the airvalve that opens up and push fresh air in to help burn unburned fuel, must I block it off?? The one from the airbox going into the cylinder heads. Was reading here somewhere about the same valve thing you guys take off the FJR. Is it the same type of thing or am I missing the bus here completely?

The clowns here in SA don't know, half say YES, other half say NO. But then again, this is Africa, don't expect too much we say here....... ha ha ha.

???????????

 

[FJamR]

I have an 2006 R1.
Two Brothers slip-ons, with the CAT removed. BMC aftermarket airfilter with PCIII.

Now, that airvalve, forgot the name now sorry guys. But the airvalve that opens up and push fresh air in to help burn unburned fuel, must I block it off?? The one from the airbox going into the cylinder heads. Was reading here somewhere about the same valve thing you guys take off the FJR. Is it the same type of thing or am I missing the bus here completely?

The clowns here in SA don't know, half say YES, other half say NO. But then again, this is Africa, don't expect too much we say here....... ha ha ha.

???????????

I think you're talking about the PAIR valve and it's removal. Don't know the specifics of the R1 desmog, but basically, you can get block-off plates to put onto the cyl. head. The plates will block off where the secondary air injection system attached (smog crap). After I perform this, I pull all the other smog rubbish. You'd probably want to check with R1 owners who have gone before you to see what you can dicard and how to reroute/remove vacuum lines.

 

[T/a Pierre]

Yamaha techies here say I must just block the pipe off inside the airbox? Can leave the rest as it is.....

That true?

Will there be a performance difference after I've done it?

 

[2WheelTiger]

The only advantage you'll gain is the POSSIBILITY that you won't get any deceleration "pop" from the aftermarket exhaust system. If you don't vent the crankcase in some way, you'll actually lose a fractional amount of horsepower.

So, unless you get a backfire 'pop' from the exhaust when you decelerate, don't waste your time.

 

[T/a Pierre]

I have that popping, but like it!

So I will leave it then.

Thx!!! :clapping:

 

[wfooshee]

Most of the removals were for the popping on decelleration, but just as much for the fact that the motor is just cleaner without all those hoses on top. Easier to work on when you don't have to shove the PAIR system out of the way all the time.

There's no performance gain by removing, it's simply a method to burn fuel that gets through the cylinder unconsumed into the exhaust. Emissions regulators don't want that fuel getting into the atmosphere, and the popping on decel is the fuel being burned in the exhaust pipe. Lots of little tiny backfires.