80210

iTrader: (23)

I'm running a TBE with testpipe and after reading An Inconvenient Truth, I'm honestly feeling a little guilty about the fact I can smell the gasoline burn off of my catless exhaust...

I know of options such as high flow cats, etc. but does anyone have any suggestions on ways to reduce emessions while keeping the testpipe? Perhaps tuning will help lean it out a bit, any other advice? Perhaps find a way to increase MPG?

I doubt this post has ever came up on evom... but I've been feeling a little guilty lately.

mdsevo06

iTrader: (41)

A CAT is your best bet. It's about a 10hp loss, but with less guilt.

Silk

iTrader: (4)

Buy a hybrid. The 4G63 is one filthy engine

80210

iTrader: (23)

Any point in having a downpipe/catback with the cat?


Haha, just a reminder Im not looking for a hybrid of any sort, just looking for ways to clean up my exhaust a bit or increase MPG

DrakeV

shouldn't have bought an evo, or any high performace car for that matter! nothing would get you better mpg (maybe a different tune) but having the cat would definelty lower emmisions (and power)

robertrinaustin

iTrader: (5)

A cat and tune for 14.7 afrs. I think that's the point where emissions are the least. You could tune to maximize your mileage at 16:1, but you won't burn as clean.

Robevo RS

iTrader: (16)

change the fuel to ethanol...
i you can convert your car to use ethanol..
and the ethanol 85 octain is equal to 105 gas octain...
short video:

http://flextek.com/commercial.htm

install info if its works on evo:
/i do not know it will,but somebody have to try it/
http://flextek.com/installers.htm

i hope it helped

Robevo RS

iTrader: (16)

sorry double post

80210

iTrader: (23)

Definitley glad I bought an evo, your missing my point Drake.

I'm fine with stock emissions, I'm just trying to increase power without really increasing emissions. My evo is my DD.

Perhaps I will throw the cat on again, however, I'm uncertain the catback and downpipe will do much if the exhaust is getting restricted.. what are you guys' thoughts on this? Will the dp and CB stil help?

ShiftySVT

Feel guilty no more:
http://video.google.com/videoplay?do...62022478442170

A couple other points:
1) Al Gore is nothing but a huge hypocrite. He uses about 20 times the amount of electricity than the average american.
http://www.usatoday.com/news/opinion...re-green_x.htm

2) Cats actually increase greenhouse gasses:
http://en.wikipedia.org/wiki/Catalyt...ter#Criticisms

ShiftySVT

How would 16:1 be less clean? And how do you change the closed-loop AFR?

80210

iTrader: (23)

ShiftySVT, can't wait to watch the video! Thanks!

Zeus

iTrader: (66)

Beat me to the political retort... alas, this is not the place for such non-sense... ALL FURTHER POLITICAL SIDEBAR NEED BE IN ANOTHER TOPIC WHERE APPROPRIATE!

Back on topic:

The best compromise in my mind is a nice 3" 100 cell metallic cat. PM me for details as this is not something "I" sell, but know where to get! Peace of mind is not necessarily cheap...

80210

iTrader: (23)

What exactly is a 3" 100 cell metallic cat?

j1

iTrader: (1)

You could buy TerraPass for your car to offset your CO2 emissions.
http://www.terrapass.com/

Depending on where you live, you may also be able to buy greener
power for your house. I live in Austin where there is the option to
buy electricity from renewable sources for about a 30% premium.
http://www.austinenergy.com/Energy%2...oice/index.htm

Other random ideas to reduce your global warming impact:

You could fly less.

You could become vegetarian.

You could move closer to work.