does anyone know the best engine additive to get to lower emissions for my 92 prelude or NE injection car???

Question

or any modifications I could do??

Answer 1

none of those things will help, good piston rings, a good cylinder bore and tight valve ring seals and guides all keep the oil in the crankcase, and out of the combustion chamber...
You can usually better lower emmissions if you are trying to pass a smog test, by thoroughly warming up the car, like after driving an hour in bumper to bumper traffic

Answer 2

An engine additive is not going to help lower your emissions - you need a fuel additive that cleans the combustion chambers in your engine. STP, Valvoline, Chevron, amongst others make complete fuel system cleaners that will help do this (I wouldn't recommend Lucas as it doesn't contain the ingredients needed to clean your combustion chambers despite what the product says). Note that you will only be able to lower emissions if you have deposits that have built up in your combustion chamber over time. Given that you have a 92 prelude and I'm guessing that you've never used fuel additives, you have deposits - they can form after as little as 5,000 miles!!!
Deposits will serve as insulation on the inside of your combustion chamber thus resulting in a higher temperature. At the higher temperature you create many of the emissions that show up in emissions testing.
So...clean the deposits, lower the temperature, reduce the emissions.

Answer 3

sounds like the 14 year old Honda failed emissions test. First off did you have fresh oil in the beauty? Secondly did you warm the car up fully? Third did the emissions station give you any printed results With HC, C02, C0, and N02 reading on the paper Technicians can really tell a lot about how the engine and emission controls are working with the numbers after the above gasses. Hydrocarbon, carbon dioxide, carbon monoxide, and nitrous oxide Use another five ponits and tell what the paper said that failed the emission test

Answer 4

the emissions test is a joke, they tried to pass the law in orange texas. they built a huge brand new building and thought they would stick it to us! It turned out people who bought brand new cars and took the test failed .. to make a long story short they sold the building and didn't pass the law but you had to have the smog control to get a inspection sticker!!but octane booster injection cleaner cleans your valves!!

Answer 5

you can get a device called an ecoflow, which when fitted to your fuel line will reduce emissions by 20-50 percent and will also reduce fuel consumption by somewhere in the region of 20 percent for around fifty earth pounds. happy hunting, p.

Answer 6

if your engine is really worn out use thicker oil for the test,but dont use it in the winter time. get the car tuned up right and it should pass unless its burning a lot of oil.

Answer 7

Alcohol will burn cleaner, but you will have to find a dealer that sells it in your area.