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Originally Posted by nismojunkie
Hey guys,
What advice can you guys give me on what pollution control equipment can and cannot be removed while not having to modify the ECU and so on.
I'm looking for some "free power" but still want decent driveability.
For example, do you need the carbon cannister, etc.
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Stuff taken off the internet for reasons why you might want to keep your pollution control equipment
Reason #1....engine design...
It's true the first primitive emissions control pieces added to engines in the late 1960s and early 1970s detracted from both performance and driveability, so removing them did make the cars run better. But that was only true because those engines were never designed with emissions controls in mind (having been first designed, for the most part, in the 1950s).
In contrast, late model cars and trucks (those built since the mid-1980s) were all designed from the get-go with emissions equipment as an integral part of their drivetrains. Removal/tampering of any of these integrated systems negatively affects driveability -- so no one does it anymore (at least, no one who isn't a complete idiot).
Reason #2....stop detonation & pinging...
THE EGR valve bleeds a small amount of exhaust into the intake manifold to reduce excessive temperatures, which, in turn, reduces NOx, the nastiest of the emissions. Engine timing and the fuel mixture are calibrated for the proper operation of this device, which only comes into play at cruising speeds. Disabling it can cause pinging and rough running if the engine is not retimed to compensate for its absence.
Reason #3....prevent your gasoline from evaporating...
CHARCOAL CANISTERS are used in conjunction with "sealed" gasoline tanks. A parked vehicle gives off fumes, which, if not trapped, float off into the atmosphere. This canister absorbs fumes and stores them until you start the engine. Vacuum then purges the canister, and the cycle begins again. This device does NOT detract from a vehicle's operation and should be maintained for no other reason than it helps keep your garage from filling with fumes on a hot day after you park your vehicle. Remember...gasoline fumes are HIGHLY voilatile....collect enough of them in an enclosed space & you might blow up your car!! Gas fumes and an open flame are NOT a good match...BOOM!!
Reason #4....to burn off your unburnt gas
The function of a catalytic converter is to burn fuel vapors that were not completely consumed in the engine. As such, it may be considered one of the most important pollution control devices on your vehicle.
And...the probably the most important of all....Reason #5...
The United States Environmental Protection Agency and the Clean Air Act passed by Congress...
http://www.epa.gov/oar/caa/contents.html
Get caught with missing emissions control devices and be prepared to pay some $$$$ in fines. Enforcement & Compliance varies from state to state though...most of the time law enforcement agencies get stuck with this task. Whether they do it or not, that's another story....but they can if they want to.
Anyhow, just so you know...reasons why to keep your emissions control devices....choice is up to you...
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