No more emissions laws!

chris4x4 · Apr 27, 2012

SnowroxKT said: ↑

Well, I gotta do some more research then!
Click to expand...

http://www.tacomaworld.com/forum/technical-chat/19967-how-air-goes-thru-your-engine-basic.html

bjmoose · Apr 27, 2012

I have to modify what I said - there's one "take some emissions stuff off" modification that much of TW seems to believe actually has a small but measurable amount of improvement in top-end power:

http://www.tacomaworld.com/forum/performance-tuning/2012-diy-secondary-air-filter-removal.html

But that's for the 4 banger not the six.

benbacher · Apr 27, 2012

I was just reading that thread you posted, it seems like some of the V6'ers noticed gains in MPG? Am I reading that wrong? And will this make any difference with the Volant CAI I have coming in the mail? I don't think any of those secondary filters stay on do they?

Torspd · Apr 28, 2012

Doug Thorley long tube headers. First cats removed, and you still have the factory ones on the factory headers. So in a sense, you didn't tamper with them. Then, the URD y pipe. Second set of cats removed, and same technicality principle. Lol.

benbacher · May 14, 2012

Do you see loss or gain in the low end when going with that set up? I love the idea but I don't want to sacrifice 4x4 ability when getting muddy. Sorry if that's a noob question.

joes06tacoma · May 26, 2012

bjmoose said: ↑

I've said it before, and I'll say it again.

It's not 1975 any more.

In 1975, auto makers needed to comply with new stricter regulations, so they added some bolt on filtering to their 1974 models. Not surprisingly, there was less power.

So you could increase power by removing some factory parts and kind of retroactively turning your car into a 1974 model.

Now, that was 30 years ago, and automotive engineers have been working with emissions controls laws as a design constraint since before most of them came out of college.

So modern cars are designed to optimize across a set of criteria that includes

*COST

*POWER

*ECONOMY

*EMISSIONS LAWS

The entire design from end to end is working with that in mind.

So, how do you make your car more powerful than it came from the factory?

Well, one way would be to go down to your local performance shop, where they've got a dynamometer, a machine shop, and a handful of dudes who know their shit, and you say to them: "Here's $20,000. Build up my ride. Make it run fast. It doesn't need to pass any emissions tests when you're done."

You'll probably come out with a stoked engine, low restriction inputs and outputs, a blower, a requirement to run premium gas, and custom electronics tuned to the new configuration.

But if you just get out your toolbox and start randomly unbolting shit, like you would have in 1975, it's more than a coin toss you're gonna end up hurting performance more than helping it.
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Well put!

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No more emissions laws!

#21
chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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bjmoose Bullwinkle J. Moose

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Welcome to Tacoma World!

No more emissions laws!

#21 chris4x4 With sufficient thrust, pigs fly just fine. Moderator

#22 bjmoose Bullwinkle J. Moose

#23 benbacher [OP] Purveyor of Fun Vendor

#24 Torspd Tor-nication

#25 benbacher [OP] Purveyor of Fun Vendor

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#21
chris4x4 With sufficient thrust, pigs fly just fine. Moderator

#22
bjmoose Bullwinkle J. Moose

#23
benbacher [OP] Purveyor of Fun Vendor

#24
Torspd Tor-nication

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benbacher [OP] Purveyor of Fun Vendor

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joes06tacoma Well-Known Member

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