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Go Back   Auris Toyota Club > Car Parts and Maintenance > Suspension

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Old 03-18-2014, 08:19 AM   #1
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Now before I post the pics I ll put the disclaimer!

When i removed this part of the CAF my mpg rose dramatically without anything else being done to the car or changing how I drive it. It does however cause a slight drone around 1800rpm. When the car was brand new it managed 35mpg (iirc) at an indicated 75mph. This rose to around 39mpg with age. Last week it did 44mpg at 75mph and 2 days ago it was showing 45mpg when I got to London, much better than last time when I got 39mpg.

However I am not saying this will work for you, maybe something else has happened to my car during the night but its worked for me

I did this whilst I had all the plastics off so I could fit new bulbs which made access much easier but I think you could probably do it in situ or by only removing the battery cover.

How it comes as standard



The part you remove



And how mine is now



This has resulted in the cold air not being brought round a tight 90 degree bend and it isnt pointing backwards anymore! And I ve driven it through awful awful rain and it hasnt got wet inside the pipe yet!

Cheers

John

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Old 04-01-2014, 12:56 PM   #2
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I would stick a small cone filter in there.
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Old 04-11-2014, 06:45 AM   #3
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But then you would have 2 filters and less airflow
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Old 04-24-2014, 08:32 AM   #4
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Sounds interesting, I must try this. Any increase in power or just mpg?

Have you had it off long enough to go through a tank of juice, as it may just be the computer giving false readings. If it is working then you ll no doubt be getting further on a tank.
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Old 06-20-2014, 10:27 PM   #5
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Thanks John

I did see this when i was checking the air filter but didn t think it came off!
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Old 07-15-2014, 01:34 PM   #6
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Yeh i done the same you can feel the air sucking alot more with it off it does work but not sure on performance maybe a little bit of torque?.
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Old 08-08-2014, 02:52 AM   #7
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Quote:
Yeh i done the same you can feel the air sucking alot more with it off it does work but not sure on performance maybe a little bit of torque?.
Might sonnd like an obvious question, but this part must have a function? Is it for keeping the air clean as it enters the engine or something similar? If you take this out of the equation would you degrade something else somewhere down the line?
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Old 09-29-2014, 05:17 AM   #8
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Colder air actually uses more fuel

Think about it, it is more oxygen rich therefore to keep thw AFR perfectly balanced more fuel is required. - which is why engines have a cold start system or choke, to either dump a load more fuel in, or bring in less air.
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Old 10-10-2014, 12:07 PM   #9
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Quote:
Quote:
Yeh i done the same you can feel the air sucking alot more with it off it does work but not sure on performance maybe a little bit of torque?.
Might sonnd like an obvious question, but this part must have a function? Is it for keeping the air clean as it enters the engine or something similar? If you take this out of the equation would you degrade something else somewhere down the line?
That part is just a normal tube, like an extension i think, if it has a important role i dont know
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Old 02-04-2015, 10:41 PM   #10
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Judging by the way it is fitted, it is no more than an extension.

The only purpose i can think it serves is to keep things like leaves and other bits from getting into the pipe. With it on the air intake faces backwards making it less likely for things to get into that pipe.

There is still a big filter there so that isn t the issue, the issue may be leaves clogging up the pipe restricting airflow. Still i think its unlikely.

I will have to try this at some stage, with more air flow it might help reduce the flat spot before max torque / low revs.
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