Secondary air filter?

How do we change these and how often? Did a search and came up with nothing..

DCSB V6 4.0. 4x4

 

It's not replaceable.

Well, unless you buy a whole new intake assembly for several hundo.

 

cut it out

 

Don't do this, no reason to.

 

It's the charcoal filter for gas vapor emissions sake. Not replaceable/no need to replace.

 

Thank you

 

What is the guy before me cut it out any issues with it missing ?

 

I'm not recommending to cut it out but out of curiosity I did it myself not too long ago. Reset the ecu and all was well. Barely any change. Maybe a slightly more sensitive throttle on the lower rpm but I wouldn't remove it on a newer vehicle. I have about 170k and that secondary filter wasn't looking too hot after the recent air filter change.

 

Nothing really will happen. You might get a slight gas smell in your garage rarely, that's about it. IIRC it's there to absorb any gas vapor coming from your fuel tanks pressure relief valve/vent when your truck isn't running (that would normally get sucked back into your intake when your engine is running). Emissions compliance thing.

Also, there's a thread somewhere in TW where they tested MAF #'s before/after removing it and it was determined that it doesn't provide any restriction aka no benefit to removing. I could be remembering wrong but I'm 90% sure for a N/A engine it truly doesn't matter if you remove it. Although at 170K miles as above it may be clogged enough to make a difference. *shrug*

 

Don’t need it. One of the first things I rip out of my tacos.

 

I usually take the tomatoes out.....

 

Why?

Did you remove your doors too? You don’t technically need those either?

 

Or the hood, just unnecessary weight.

 

Gives up too much air flow for something that is not a concern to me. I don't care about some possible fumes coming out as much as I do about my engine being able to breathe properly.

 

I'm with you on this one!

 

Zero benefit removing it

 

Read the results for yourself. I’ve never kept my charcoal filter on any of my tacos. One I sold got it at 40k miles and sold it at 150k miles. My 13’ I got at 60k miles and now have 100k and never had any issues...

https://www.tacomaworld.com/threads/diy-secondary-air-filter-removal.2012/

 

but there is no benefit in performance to removing it .... so why remove it?

Also if you live in CA and have a smog tech thats thorough you will fail smog if this secondary filter is removed.

 

I wouldn't say there is "Zero" benefit as outlined by this video. https://www.youtube.com/watch?v=F1JmOKKAgyQ You probably get 3-5% increase in hp and torque which will likely not be noticeable but still isn't zero.

 

Hell no false information