[adamjwilson]

(or it can be also be installed to compliment another part) is what was said. Personally, I would not add a bottle, but that is a personal choice from experience of replacing too much stuff over the years, but to each his own. I know alot of guys like the bottle, but to each his own.

It’s quite difficult to point out exactly what a bolt-on part is and what constitutes a bolt-on. A turbocharger or supercharger is technically a bolt-on – you can bolt it onto the engine. But it’s not a “true” bolt-on since it requires more know-how and ideally some tuning and possibly some internal upgrades to the engine for it to work properly at higher boost. Honest, it doesn’t really matter what it means. Most car guys/enthusiasts have differing opinions on what constitutes a bolt-on. I was just putting out a simple explanation and definition of what it is.