Nitrous has gone down in popularity. I guess since you can half *** turbocharge for about 500 bucks now,
$500, that's cheap. The best thing about nitrous is your car can pass smog, just hide the solenoids in the back of the engine. The only downsides to nitrous is it takes time to warm up the bottle and that it costs money to fill up the bottle.
it costs $30-40 to fill up the bottle. It's good for 8-10 1/4 mile passes. A lot of civics at my track have it. They run anywhere from high 14's to low 13's. I actually met a dude last time with a 5speed 7th gen civic. He was running 14.8 all day long.
The guy still hasn't paid me. He won the bid but hasn't paid yet.