[CBR929 Junkster]

Has anyone done the pair valve mod on their 929??

Need to get instructions on how to..

Anyone got any good info let me know!!:specs

 

[Ian]

Pair valve?

The HTEV valve in the exhaust or the flapper in the airbox? :confused

 

[Sirkbac]

PAIR Valve write up I did a few months ago.

 

[Sirkbac]

Ian said:
Pair valve?

The HTEV valve in the exhaust or the flapper in the airbox? :confused

Neither, it's an Emissions valve. Pulse air injection, into the exhaust manifold to burn off unspent fuel. It's where the popping on deceleration comes from on a 929/954. If you ever plan to Dyno tune the bike you need to either block it off by pinching the lines to the motor, or remove it all together. If not, the air injection will throw the A/F readings off. No real power gains from removing it, or weight loss.

 

[Ian]

Gotcha, had a brain cramp on that one... Yamaha calls it the AIS. Kawi, the KLEEN thing.

 

[Joel_Cool]

Sirkbac said:
PAIR Valve write up I did a few months ago.

That was a good writeup.

 

[Sirkbac]

Thanks. When I went to do this I couldn't find any info either. Hopefully this helps a few people.