Any modifications to reduce emissions
- Thread starter SIVART
- Start date
grease_monkey
Member
- :
- 2002 Protege5 & 1973 Chevrolet Nova
Honestly, and unfortunately unless you have a high performance, high output, engine, Intake and Exhaust mods really don't change much. Basically just make sure everything is in good working order before you take it into get emissions test. Slight tune-up maybe? Change the plugs and the filter. Routine stuff. Good luck with emission testing. You're lucky, I gotta get my '73 Nova tested before the end of the month and its currently not running and besides that it's got a high performance double pumper carb...no passing :/ lol
I won't say it isn't possible because I can't think of anyone who has checked this out but I will say I doubt there is any way to reduce emissions from these cars while also adding power - usually the opposite is true. Hell, I have no catalytic converters, a breather filter, I've removed the VTCS valves and none of my intake pipes are CARB approved. If I lived in a state with more stringent visual inspections or actual emissions testing I'd be screwed...
AZ still sniffs? That sucks! you don't even get tested in MO. Well, safety.
grease_monkey
Member
- :
- 2002 Protege5 & 1973 Chevrolet Nova
Ya unfortunately. But we have so much dust out here i don't see how it matters lol
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- 2002 22A P5 and 2007 TR MS3
I believe he's talking about Mother Earth...not a mother in the car...
My understanding would be that the process of making the engine more efficient by using modifications is shown to work. If you maintain your driving habits while increasing the efficiency, or horsepower, or the engine, you would in fact conserve gas and decrease harmful emission.
Without any proof, or any real factual basis for my hypothesis, I would imagine it is possible. The following modifications could be made without creating an increase in emission, and could in fact reduce the emissions of the engine.
The wagner exhaust manifold, which keeps the primary cat.
A cold air intake
Cat-back exhaust would have no impact on emissions
Lightweight Flywheel
Change out 5th gear to reduce RPMs at cruising speed
Lightweight or Underdrive pullys to reduce parasitic loss
Nology Hot-wires to help efficiency of combusion
Engine management could also create higher MPG and better/cleaner combusion, although you won't pass California emissions tests.
Theoretically you could add additional Catalytic conveters to the exhaust to catalyze more harmful emisions.
So, I think you can definitely improve the performance without increasing emissions, but reduction of emissions would be very difficult or minimal at best.
My understanding would be that the process of making the engine more efficient by using modifications is shown to work. If you maintain your driving habits while increasing the efficiency, or horsepower, or the engine, you would in fact conserve gas and decrease harmful emission.
Without any proof, or any real factual basis for my hypothesis, I would imagine it is possible. The following modifications could be made without creating an increase in emission, and could in fact reduce the emissions of the engine.
The wagner exhaust manifold, which keeps the primary cat.
A cold air intake
Cat-back exhaust would have no impact on emissions
Lightweight Flywheel
Change out 5th gear to reduce RPMs at cruising speed
Lightweight or Underdrive pullys to reduce parasitic loss
Nology Hot-wires to help efficiency of combusion
Engine management could also create higher MPG and better/cleaner combusion, although you won't pass California emissions tests.
Theoretically you could add additional Catalytic conveters to the exhaust to catalyze more harmful emisions.
So, I think you can definitely improve the performance without increasing emissions, but reduction of emissions would be very difficult or minimal at best.
Engine management... lean it out so that it's close to stoich... should limit hydrocarbon emissions...
Intake, headers and exhaust... add a high flow cat, and you should still pass emissions in a state without visual inspection. Last I checked, my car still passed emissions even without a cat, but local emissions guidelines aren't very strict... EURO II equivalent, I think.
Intake, headers and exhaust... add a high flow cat, and you should still pass emissions in a state without visual inspection. Last I checked, my car still passed emissions even without a cat, but local emissions guidelines aren't very strict... EURO II equivalent, I think.
yup that the mother i speek of, Right on thanks, much better no effect on emissions than worse you know
grease_monkey
Member
- :
- 2002 Protege5 & 1973 Chevrolet Nova
Well honestly think about it. How do high performance engine builders make their engines so powerful? They take every piece of that engine and make it run without any limitations and make the engine performance at is "perfect" (impossible but in theory achievable). Making you're engine run more effecient adds more horsepower and (usually but not always) adds MPG. Ex.Such as changing your cam to a higher lift camshaft. The fuel system is still going to push out the same amount of fuel no matter what, so allowing your valves to open more allows that fuel to flow in easier, or more effeciently.
Just start thinking of anything that inhibits the engine. For example the power steering pump, A/C, but of course you don't want to remove those but you get the idea.you'd think reducing emissions and increasing fuel economy would go together, but not necessarily. in-cylinder temperatures during combustion affect the type of pollutants created, and controlling combustion temperature to reduce pollutants does not necessarily correlate with increasing fuel efficency. I'm no combustion engineer, but I do know what goes on in a cylinder during combustion is way more complicated than simply rich/lean and timing. air temp, fuel temp, chamber shape, swirl, pressure, fuel particle size....
car makers balance economy, power, longevity, emissions, manufacturability, servicibility... and hope they create a product that sells, doesn't kill them with warranty costs, and doesn't result in EPA fines.
people who mod for performance are choosing to balance that equation differently than the manufacturer. you could just as well mod for emissions, but I don't think the aftermarket industry is putting much engineering effort into developing those products.
like p-funk said, keep it running right and drive reasonably.
ride your bike to work if you can. I cut at least 50% of my emissions that way.
car makers balance economy, power, longevity, emissions, manufacturability, servicibility... and hope they create a product that sells, doesn't kill them with warranty costs, and doesn't result in EPA fines.
people who mod for performance are choosing to balance that equation differently than the manufacturer. you could just as well mod for emissions, but I don't think the aftermarket industry is putting much engineering effort into developing those products.
like p-funk said, keep it running right and drive reasonably.
ride your bike to work if you can. I cut at least 50% of my emissions that way.
grease_monkey
Member
- :
- 2002 Protege5 & 1973 Chevrolet Nova
very true, none of us are experts
if you all think you are better than the auto manufacturer's engineers in developing something that's clean as well as performing decently, then my hats off to you
till then, so long as I care, I'll leave my car 100% stock (but I don't really, so that's why it isn't stock)
till then, so long as I care, I'll leave my car 100% stock (but I don't really, so that's why it isn't stock)
