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The exhaust system is what muffles the engine sound keeps the fumes out of vehicle and away from the vehicles occupants and also filters the exhaust fumes out.
In a gasoline engine vehicle, the catalytic converter.
its so when you pee in the exhaust pipe it converts it into nitrous oxide (NO2)or "boost" and it filters out the water so its pure
air goes the warm filters that are heated
The filters in an air purifier ususally need to be changed around every 3 - 6 months but it also depends greatly on what kind of air purifier you have .
cooling and lubrication,filters,centrifuges,oil heaters,intake and exhaust
It is important to change the filters on your pitchers regularly. On average your filters should be changed about every 40 gallons or roughly 2 months.
I would look into the Hepa Filters, I ask your allegist if they have a recommediation. I have had real good luck with the hepa filters as long as you keep filters clean and changed.
All of them
Brita water filters are debated on safety. The filters do remove heavy metals, 99% of chlorine, and fluoride. The filters pose a danger because bacteria is not killed and if the filters are not changed properly the bacteria is in contact with the water.
Banks now makes a great exhaust system for your yj, but it can be pricey. also the split pipe 50 series flowmaster. as for air filters K&N is always a good way to go
Clogged fuel filters result in poor throttle response and lack of power. Filters should be ideally changed before that happens. The 2002 Trailblazer owner manual says fuel filter should be changed at 100k miles. I expect the 2003 manual makes some comment. I have a 2002 and just changed filters.