On the 2001 Ranger 2.3L, what is the black box attached to the right side (in photo) of the intake before the throttle body? Is it the evaporative emissions system canister? 
What is this thing
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most likely a resonance chamber (box).
Wow, what is that? Does is help with power? Does it quiet the intake? If it does not help with power, can I remove it and plug the opening?
I do not have that attachment under (towards the front of the engine) the "E" in VALVE on mine. The bypass going into the intake stream is there, but blocked off.
http://dealerrevs.com/gallery/46695353.html
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Looks to be a resonator chamber to me. It is used to quiet the intake. Yes it can be removed and plugged if that truly is what it is.
Helmholtz Resonator
The chamber or box on mine is funky, in the way, and wobbles. All good reasons to get rid of it. I'd like to be able to see that side of the engine better. I have a Haynes manual in the mail off of Ebay ($10 shipped vs. nearly $30 in the store), so when it comes I'll have to see what it says. If it makes it louder, that would be great. Thanks.
Originally Posted By: Quest
most likely a resonance chamber (box).
Web searches and other car forums indicate it can modify the sound, quiet it or make it more throaty, it can also enhance power, and presumably if done wrong de-hance power. Easiest is to pull it off and see what happens. My 2.3L is 135 hp in the introductory year. Shortly after that, perhaps even 2002, it was increased to around 150 hp. I would like to get that extra hp if possible and wonder if the intake resonator is making a nice sound at the cost of power as I don't see that box on 2008 trucks.
Kestas
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It sure takes up a lot of valuable real estate under the hood!
Exactly. Next step is to find a suitable plug and remove it. If performance suffers, I can put it back on.
Originally Posted By: addyguy
Hey Paul...I don't see your F150 in your sig anymore...
Don't tell me you sold your beloved I-6 F150 for this thing!!!
Tell me it's not true!
Yeah, I wasn't on the forum much over X-Mas, so I missed the whole 'saga'..all cosidered, sounds like you did good. Looks like a neat littel truck!
I remember, in one of your UOA thread for the F150 you said you were going to get a Ranger 4-cylinder, and run Redline in it!
Any plans for UOA's with this new rig? You created a pretty complete history with the F150.....
The redline went in a few hundred miles ago. I want to run it 8000-10000 miles. I'll do a UOA around 6000 or so, depending on how blotters look. May go with Blackstone. I have used other labs, but lost my info on them and know that Blackstone seems to be talked about a lot as a good lab. It will be a while at roughtly 1000s mile per month, but I will post it on this site.
Well, I had 34 years driving the big 300 six ('77 F100 3-on-tree, '84 F150 4 speed, and the '95 F150 5 speed). One thing I notice is that people let you in a line of traffice more redily when you are driving a big nasty full sized truck.
Right . A sound attenuator.
Most performance gleaning guys lose that part [in many cars] immediately.
Throttle response is generally better. Who wants a tumor hanging on what should be a smooth pipe?
Like I say, soon as I can find a suitable plug. It's history.
If intake resonators were so good the performance aftermarket would be selling them. Looks more like an afterthought by Ford that quickly in the following years got unthought. I like a nice sound but not at the expense of a goiter on my trucks windpipe.
Thanks
Originally Posted By: mechtech2
Right . A sound attenuator.
Most performance gleaning guys lose that part [in many cars] immediately.
Throttle response is generally better. Who wants a tumor hanging on what should be a smooth pipe?
I have never seen an intake resonator do anything to hurt performance. It is completely out of the airflow and at the worst causes very small turbulence.
But every car is different. On this application it'll be all about noise, not 25 hp.
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