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davidmay

Joined: 25/08/2009 05:53:00
Messages: 5
Location: Houston, TX
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Aren't ALL vehicles used on US roads emission controlled vehicles?
GreenDieselEngineering
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Joined: 10/07/2009 07:25:47
Messages: 366
Location: Southeast Michigan
It is very typical for after market products to stipulate "for off-road use only". This is a caveat in the US emission laws that allows performance products to be sold in the US. The disclaimer is to reduce the cost of bringing products to market without requiring full blown emission compliance. This puts the responsibility in the hands of the consumer. For instance, if one buys a performance muffler many times it will have the same disclaimer, and ususally means no emission testing was performed in developing the product due to the high cost associated with it. It does not necessarily mean the product is bad for pollution, but rather never tested.

Before circa 1970 the US did not have much in terms of emission laws from motor vehicles, since the clean air act we have been progressively reducing the emissions of motor vehicles minus greenhouse gas emissions (CO2). The US pumps as much greenhouse gas as it wants at the current moment fo rthe most part. New laws have recently been enacted to curb our CO2 production including the cap and trade program for plants and higher corporate average fuel economy (CAFE) for motor vehicles. Diesels are naturally lower in CO2 production by about 30% versus a similar sized gasoline counterpart.
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yakers

Joined: 13/08/2009 19:10:10
Messages: 7
Location: Pasadena CA
Well, yes, AFAIK. But some of us use our Jeeps off road. Some common mods to Jeeps are for off road use although some folks have been known to drive to and from the off road run.

“There are only two ways to live your life. One is as though nothing is a miracle. The
other is as though everything is a miracle.” - Albert Einstein
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yakers

Joined: 13/08/2009 19:10:10
Messages: 7
Location: Pasadena CA
GDE types faster than I do.

“There are only two ways to live your life. One is as though nothing is a miracle. The
other is as though everything is a miracle.” - Albert Einstein
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davidmay

Joined: 25/08/2009 05:53:00
Messages: 5
Location: Houston, TX
Offline
So then, if I am going to take responsibility for the effect on my vehicle's emissions if I purchase the "Eco Performance Tune", can you tell me if the vehicle will pass emissions testing after the tune (assuming it passed before the tune)? Will it pass any state's testing? Will it pass California testing? I don't see any mention of the emissions before and after on your web site (if there is mention, a link would be appreciated).

I would also be interested in an answer to the same question for the "HOT Tune" and the upcoming "Stage II Turbo Upgrade".
GreenDieselEngineering
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Joined: 10/07/2009 07:25:47
Messages: 366
Location: Southeast Michigan
All the tunes and kits from GDE will pass the yearly or bi-yearly emission tests that some states enforce. These are rudimentary tests used to do basic checks on the vehicles to ensure they are running in normal condition, i.e. there must not be a CEL on or the vehicle fails. One additional test for diesels in some states is a free acceleration in park or neutral, here they are looking for normal levles of smoke (particulates). All our tunes have lower smoke than production in this operating zone. Additionally, there will be no CEL with our tunes as long as all the sensors/wiring is plugged in like a stock vehicle.

There are other emission tests that OEMs (original equipment manufacturers) must perform, i.e. FTP75, US06 and SC03. These require million $+ facilities to even perform the testing and cost a small fortune. These are used as a basis for selling vehicles in the states mandated by the federal government. In-use testing is based on each state's requirements for individual owners and never involves such invovled testing like the federal government.
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