air chamber on carb boot?

[450RGNCC]

what exactly is the purpose of the plastic chamber on the rubber boot b/w the airbox and carb? I heard somewhere that if I remove it, i will get better throttle response. is this true?

[DirtDevilBT]

It is said to be for quieting the intake noise by using these for resenators. I am trying to do a test with the intake boot when I have my head ported. I'm gunna try the completely stock intake on a flow bench. Then I'm going to try the resenator off and use a plug to plug the hole, then put it on the flow bench. I have a feeling though that it's not about flowing a certain amount but maybe air on tap when you crack the throttle is what the box is for. Kind of like an expansion chamber.:confused:

[speedfreaksguy]

There was a thread on this months ago. I believe it was by Chad502ex. He determined there was a drop in HP when the resinator was removed and plugged off. Someone correct me if I'm wrong.

[red2004 TRX450R]

Originally posted by speedfreaksguy
There was a thread on this months ago. I believe it was by Chad502ex. He determined there was a drop in HP when the resinator was removed and plugged off. Someone correct me if I'm wrong.

that is want i remember

[XCRACER26]

Glad some one brought that up because I was fixing My air box and I was Like WTF is that thing for. it made no sense. On my 400ex I think the vent for the crank case goes there.

[KRMit]

I've also heard it's for having air on tap for instant throttle response. You probably don't need it if you remove the airbox lid. The HRC kit comes with a replacement plug.

[450RGNCC]

the dyno in that post does show a drop in HP and Torgue with that plugged off, i guess I will let that alone. thanks guys.

[K-Dub]

How many horse we talking about? I made a plug for mine and feel that it has better throttle response and more bottom end(seat of the pants feel). Im running the HRC lid.

[450RGNCC]

the actual dyno is near the end of this thread, it shows alot less power at the bottom, but maybe the actual seat of the pants feel is better?

[450RGNCC]

woops, heres the linkhttp://www.exriders.com/vbb/showthread.php?s=&threadid=146716&highlight=resonator