Just removed Hydrocarbon filter

Just got around to a full tank. OK, '07 V6 4x4 stock ride. 17.62 MPG today (on paper). Usual past records are 15.6-16.2 MPG. About 75 % city driving. NorthWest 10% Ethonal.
 
Do you NEED to disconnect the battery for this? Thinking about doing this sometime soon.


No need to disconnect the battery. If you pull the 20amp EFI fuse for a few minutes if that'll reset the computer. Resetting doesn't seem to be necessary but it won't hurt...
:cheers:
 
For the 4.0 V6:

It may have been posted before, but don't blame me for asking - being sick messes with my memory: Is the HC Filter located immediately after the Air Filter, in terms of flowing air to the engine?
 
For the 4.0 V6:

It may have been posted before, but don't blame me for asking - being sick messes with my memory: Is the HC Filter located immediately after the Air Filter, in terms of flowing air to the engine?

Yes.

Im going to give this a shot. I keep a running log of my MPG so it will be interesting to see what the outcome is.
 
I am still getting 17.0 around town, really got to plan a Interstate trip.

______________
2007 SE V6 4x4
 
Finally got around to doing this tonight. Don't ask me why I waited so long. It only took me 15 minutes and I was able to clean my MAF sensor at the same time.

I immediately noticed improved throttle response. Too early to tell if MPG's have increased but I can only assume that it will under the same driving conditions. I'm glad I did this mod and am pissed that I waited so long. Best part about this mod.....it's FREE!!! :party:
 
Finally got around to doing this tonight. Don't ask me why I waited so long. It only took me 15 minutes and I was able to clean my MAF sensor at the same time.

I immediately noticed improved throttle response. Too early to tell if MPG's have increased but I can only assume that it will under the same driving conditions. I'm glad I did this mod and am pissed that I waited so long. Best part about this mod.....it's FREE!!! :party:

WOW your not kiddding. I just did this this morning took all of 15 min. I just followed J.A.s post on the how to but I also removed the 20amp EFI fuse (as per CJ3flyer) for the duration of the extraction. All I can say is that she seems to be breathing a whole lot better and there is most Definately a big jump in throttle responce and smoothness. I just did this this morning so ill report MPG later in the week. Thanks for all the help fellas, wish I had the nuts to do this sooner!
 
My idle RPM is now about 600ish, down from 750ish. Not much but my anal retentive self noticed it. Anyone else experience this?

Edit: A/C off
 
May just be a coincedence but after removing it I no longer had the sulfer smell that comes with hard accleration.
 
Lol! didn't wait till I'll get home !

Just remove my HCF, I broke one corner using a flat screw driver since I don't have a chisel and pulled it while other rivets just unsnaped.
then drove 12mi in the freeway.

Throttle response improved!:bravo:

There is a part no., maybe we can just buy a replacement should it be required during inspections.

Like GMZ and Mtn.Rush said...No noise!
..unlike when it was there, as if I can hear the engine gasping for air...ahem
 
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My idle RPM is now about 600ish, down from 750ish. Not much but my anal retentive self noticed it. Anyone else experience this?

Edit: A/C off

Your idle did not change. It drops down to exactly 625 (read it somewhere) when it likes and raises to around 750 when it feels like especially with the AC on.
 
Your idle did not change. It drops down to exactly 625 (read it somewhere) when it likes and raises to around 750 when it feels like especially with the AC on.

Well that makes sense because I usually keep the A/C on, but its been nice here so Ive left it off.
 
Hello all,

I have been reading the posts in here for quite awhile and did not exactly post anything until I have facts on my hand. I took that crazy thing out in 2 minutes from opening the hood to closing it.

Noticed immediately a much more subtle idle with a bit lower rpm. Throttle response was almost instant when you step on it. After driving it for a couple of miles, I checked the ave mpg and it was at 18.4 mpg from 17.2 with the hydrocarbon filter ( an increase of 1.2mpg! not bad huh?)

Over the weekend, we went to Bakersfield CA. Normally this would be a 3/4 tank of gas going back and forth from Santa Monica. Lo and behold, when we got back, my tank was just a little less than half. The Ave mpg on the monitor was at 21.2mpg.

I would say my average speed was 70 - 75 mph with my rpm playing at the 2k mark. I'm driving a 2005 4Runner SR5 Limited V8.

I'm not saying that all V8's would be getting the same but this is what I got and am very happy with this very simple but effective mod. Does not cost you anything but 2 minutes of your time.

My 2cents guys.:driving:
 
Hello all,

I have been reading the posts in here for quite awhile and did not exactly post anything until I have facts on my hand. I took that crazy thing out in 2 minutes from opening the hood to closing it.

Noticed immediately a much more subtle idle with a bit lower rpm. Throttle response was almost instant when you step on it. After driving it for a couple of miles, I checked the ave mpg and it was at 18.4 mpg from 17.2 with the hydrocarbon filter ( an increase of 1.2mpg! not bad huh?)

Over the weekend, we went to Bakersfield CA. Normally this would be a 3/4 tank of gas going back and forth from Santa Monica. Lo and behold, when we got back, my tank was just a little less than half. The Ave mpg on the monitor was at 21.2mpg.

I would say my average speed was 70 - 75 mph with my rpm playing at the 2k mark. I'm driving a 2005 4Runner SR5 Limited V8.

I'm not saying that all V8's would be getting the same but this is what I got and am very happy with this very simple but effective mod. Does not cost you anything but 2 minutes of your time.

My 2cents guys.:driving:

Yup everything he just said!
 
take the number from the avg mpg screen minus about 2.2ish and u get ur actuall mpg. i get 22.1mpg which really is around 20mpg(recalculated at the gas station, *"miles counter" divide "amount of gas in"



removing the HCF doesnt really affect mpg, just throttle response. ive always gotten around 23-22 on screen and without the HCF i get 22+ (city/hwy). been driving around 2000 miles without it.


ps i get this harmonic sound at 1500rpm (during load), also sounds kool, maybe its the trueflow xdi intake?
 

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