Offroad Trailblazers and Envoys

Removing air box on top of motor?

Trailblazer and Envoy related, but not off-road related...

by DmccartneyFF2TB » Tue Sep 20, 2011 5:50 pm

I thought I saw some one did it just wondering what the advantage to this is????
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by Gordinho80 » Tue Sep 20, 2011 5:55 pm

That box that sits on top of the I6 motors is the intake resonator. Many aftermarket intake kits bypass the resonator, some do not. No real power difference, I don't think, just more for sound.
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by bgwolfpack » Tue Sep 20, 2011 6:19 pm

I removed mine and DIY'ed a new pipe instead. The intake noise is quite a bit more noticeable especially at WOT. This is a mod more for fun then performance IMO. :cheers:
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by MrSmithsTB » Tue Sep 20, 2011 6:52 pm

:Iagree: I dislike it because the resonator gives the illusion of a semetrical motor, as well as provides protection for the ignition coils.
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by KE7WOX » Mon Sep 26, 2011 9:35 pm

How's the engine efficiency without it? given that more hot air will come in
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by tbangert » Mon Sep 26, 2011 10:17 pm

My K&N intake kit bypassed that resonator. I'd say there are minimal gains in removing it, but I am going to modify it to go back on over top of the motor to keep crap off of the coils.
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