It's not legal - period. Tampering with emissions equipment is against federal law anywheres in the country.
Yeah but how many feds do you see enforcing those laws? Some states don't have emmisions tests or any form of inspection at all other than police officers saying a tire is too bald or a windsheild is too busted after you get pulled over for speeding or something. I wouldn't worry about a thing.
Yeah but how many feds do you see enforcing those laws? Some states don't have emmisions tests or any form of inspection at all other than police officers saying a tire is too bald or a windsheild is too busted after you get pulled over for speeding or something. I wouldn't worry about a thing.
That's why I said that nobody usually checks these things. Over in Europe they have technology to see if you have a functioning catalytic converter from the roadside while you're driving by! I also know someone who got busted for running a catless h-pipe and it wasn't by an emissions test station - the cops had the car impounded and the owner had to pay $2500.
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2007 Tundra 5.7 4x2 RCSB slate metallic
2005 Corolla - all stock, cause it's the wifes
1986 Mustang GT - the stereo is under the hood
1990 Corolla - cause it was really cheap
All of the non-TRD CARb legal intakes do not have the charcoal filter. I suspect it is a device required by the mfr., but not to pass CARB smog requirements. Or, Toyota put it on to 'feel good', and it's not necessarily required- none of the other vehicles in my family have any such device, not even my mother's Volvo (and you'd think that would have it!!).
OK, My 2007 Tundra Crewmax 4x4 5.7l with 11700 miles. Last night I ripped out the HC filter and disconnected the battery. On my drive to Boston this morning my computer showed 19.4MPG when it normaly shows 17.2-17.5. I know some of it has to do with the battery disconnect and the the computer working out the MPG new from scratch, but that is a big jump.
When I get back from my trip and drive home, I hope to see the MPG's stay the same.
The 19.4 came from a mix of city and highway at 65-75 while on the highway and 25-40 city. Total trip length was 63 miles. Not a true test by any means, but a start.
OK, My 2007 Tundra Crewmax 4x4 5.7l with 11700 miles. Last night I ripped out the HC filter and disconnected the battery. On my drive to Boston this morning my computer showed 19.4MPG when it normaly shows 17.2-17.5. I know some of it has to do with the battery disconnect and the the computer working out the MPG new from scratch, but that is a big jump.
When I get back from my trip and drive home, I hope to see the MPG's stay the same.
The 19.4 came from a mix of city and highway at 65-75 while on the highway and 25-40 city. Total trip length was 63 miles. Not a true test by any means, but a start.
Will let you know more latter.
I am surely it has to do something with ecm reset together with removing the charcoal filter, but you should tried it first with just reseting the ecm without removing the charcoal filter and see for yourself of the result. This is a " FREE MOD" that we can always go back to the stock if we dont believe and dont see any improvements and results.
Maybe the HC filter is the missing piece Toyota needed to get the Tundra certified as a ULEV vehicle. How much pollution can possible result from not having this filter? If you think about it, the moment you turn off the engine, the fuel injectors shut off immediately but the engine will rotate a few turns sucking in the rest of the intake air. So with that scenario there can't be much of a gas contaminated charge left in the intake runners, not to mention the throttle body is shut as well further trapping everything. California regulations really sour it for us in terms of legally modding vehicles.
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2007 Tundra 5.7 4x2 RCSB slate metallic
2005 Corolla - all stock, cause it's the wifes
1986 Mustang GT - the stereo is under the hood
1990 Corolla - cause it was really cheap
i yanked mine just cause i was bored but i doubt it really makes a difference...all of you who claim mpg increases after this and ecm reset are just getting the benefit of an ecm still learning, and thats been posted time and time again that it just goes back to where it was. as for this thing causing a 3-5 mpg change? hahha yeah right. that and a tundra can get 19.5 to 20+mpg....:roll eyes:
I'm not at all saying this won't help out in the mileage but the best I've ever gotten before the mod was 19.1 mpg. I always get a little over 18 mph so hopefully removing the that carbon filter will equate to better breathing and a minor increase in MPG. I'm not expecting 3+ but every little bit helps no matter what it is.
I certainly don't think this mod will hurt anything..
i yanked mine just cause i was bored but i doubt it really makes a difference...all of you who claim mpg increases after this and ecm reset are just getting the benefit of an ecm still learning, and thats been posted time and time again that it just goes back to where it was. as for this thing causing a 3-5 mpg change? hahha yeah right. that and a tundra can get 19.5 to 20+mpg....:roll eyes:
Thats cool that you know that my mileage didn't actually increase like I said it did or anyone elses for that matter.
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2007 DC SR5 4x4 4.7
De Badged
All Weather Floor Mats
Painted Wheels
1 3" core 26" power stick mufflers
N-fab pre-runner light bar
Satin Black Head Light Mod
Like I said, I'm sure it something to do with the ecm reset but I never came close to 19MPG and now it shows 19.4MPG.
So do me a quick favor. If you haven't done this mod yet, go reset your ecm by disconnecting the neg terminal on the battery for 30mins and drive you truck at a mixed drive of 30-40mph and then jump up to 65-75mph for a total of 65 miles. Let us know what you show.
It didn't cost me a thing to try this and when I get home, I will drive the same route again and see if it changes.
Just got back from another round trip from work and back home. On the trip to work (24 miles) I averaged 20.8MPG and by the time I got back I was looking at a trip average of 18.8MPG. I did have to pass another vehicle this time and that might have affected the average.
My speed on this trip is 65mph, for anyone interested. I am also running Mobil 1 0W-30 to see if the heavier oil degrades fuel economy. If this trip is any indication it has not.
500 mile road trip driving 73-75 mph before removing filter average was 17.72
375 mile road trip driving 73-75 mph after removing filter and resetting computer average was 17.11
500 mile road trip driving 73-75 mph before removing filter average was 17.72
375 mile road trip driving 73-75 mph after removing filter and resetting computer average was 17.11
More confirmation of what I've been saying all along. Although I didn't actually expect mileage to decrease, I was just saying that it would not jump by 1-2mpg.
Re: 19.8mpg after HC removed!
Linear Mode
