Pair/Reed Valve block off...

[Strife]

When I use to work as a auto mechanic the air pump was used to pump air into the exhaust to help the catalytic converter do its job. Burn off unburned fuel(hence the backfiring). If the air fails to be pumped into the converter it would eventually help in it clogging up. Would take a long period of time though.

Motorcycles have a large capacity catalyzer, Which is similar?

[semperfi]

Good idea no the furniture caps.

[MFFJM2]

The popping sound is the sound of afterfire or small explosions of unspent fuel in the exhaust. Afterfire occurs in engines that have an emission system malfunction (air injection system diverter valve, or pair valve), exhaust leak or unburnt fuel in an exhaust system. When a driver shifts up and lets off the accelerator, the engine has a moment of running rich or with insufficient oxygen. This causes an incomplete burn which causes the fumes to explode in the exhaust system. The marble is the best and cheapest mod to fix this problem. There is no gain or loss in Hp by doing this mod, it just stops the popping sound.

[WarBirdII]

Ask he said above! I need to plug mine up to stop the popping noise after my r77 install!

[RatherBusa]

Marble worked for me.

[wscycle]

I installed a cap on the air box but installed a filter on the hose its that ok or the hose need to be sealed.My keep with the poping but i like that sound but if going to damage my bike i will do the correc way.Let me know guys,thanks

[ks-waterbug]

Shouldn't damage the bike (popping...)

[Jay]

08 - 09 Pair valve blockoff plates

[ogre]

haven't done it yet, hopefully i'll find some time this afternoon. tire won't be here til tomorrow anyway.

[gill_grissom]

Originally Posted by Jay

08 - 09 Pair valve blockoff plates

cool...

[Guclu]

thanks for the topic

[mattstang]

is it true the blockoffs cause the ecu to throw a FI code? im gonna do the marble mod but would like to do the blockoffs to eliminate unneccesary stuff if i can.