What is a Pair Valve removal?
- Thread starter Boyer
- Start date
Do a search for the step by step. My understanding is it's different for Gen I / Gen II. This is normally done when an after market exhaust system is added, turbo or supercharger. The pair valve as I understand it adds air to burnt gases. It serves no purpose once the factory exhaust is replaced. Removing it reduces the weight of the bike.
One method / example :
https://www.hayabusa.org/forum/gen-ii-busa-information/88656-pair-reed-valve-block-off.html
https://www.hayabusa.org/forum/gen-ii-busa-information/88656-pair-reed-valve-block-off.html
Only weight loss... 2lbs?...
No horsepower gains.
Stops small backfiring in modified exhaust setups.
Also can do marble mod if not concerned about the weight loss,but want the backfiring to stop. 5-10min job(with Break) and yield same results as pair valve mod. Any common marble works.
Pointless on stock exhaust and most slip-ons/bolt-ons.
It's something people can say they have done to their motorcycles when boasting about performance Mods.
No horsepower gains.
Stops small backfiring in modified exhaust setups.
Also can do marble mod if not concerned about the weight loss,but want the backfiring to stop. 5-10min job(with Break) and yield same results as pair valve mod. Any common marble works.
Pointless on stock exhaust and most slip-ons/bolt-ons.
It's something people can say they have done to their motorcycles when boasting about performance Mods.
Last edited:
MikeSomething
Registered
I actually did it so I could get at my header bolts easier and so when I dyno tune it, it'll have more accurate readings... that's the only thing I boast about. What's wrong w/ doing a cheap 1hr MOD Strife?
Stock exhaust?
