Hi guys, I just bought a Alpha throttle body and I need to clear a doubt.

There's a nipple on top front of it which connect to the front of the butterfly by two little holes. I need to plug this nipple?

 

This is the nipple:

https://honda-tech.com/attachment.ph...1&d=1388453104

 

Either way you need to plug it if not being used

 

thanks, that's what I think but I need to be sure.

 

That is for the EVAP canister. It can be blocked off with no worries. I personally just pull the tube out and tap the hole for a plug. :-) Never have to worry about rubber failing again. At least on your car that is. Hahaha!

 

that throttle body was designed to fit all variations and years of Honda motors, the 92-96 civic had a tb just like that with the nipple in that spot for the evap canister. since I'm pretty sure you aren't using one just slip a rubber cap over it and secure it with a ziptie. or you could pull the nipple off the tb and make a small metal plug that you can just hammer in

the rubber cap method is much easier, especially if you sell it later and someone needs to run the evap purge line to the tb.. the second method is really only if you're concerned about aesthetics

 

Thanks guys, for now I'll pass to tap the hole, I just put a rubber plug with ziptie.