What's all this stage 1 stage 2 bollocks

As title really .. noticed loads of cars on ebay advertised as stage 4  remap .  Stage  2 tuned .

WTF is that all about  have they all been playing granturismo


"Oh yeah bro my WRX is a stage 3"

"so, what does that mean, what's done to it?"

"You know, just stage 3 stuff, it's upgraded"

"So, is that a clutch and turbo upgrade, suspension, brakes... orrrr?"

blows vape cloud as he don't have a clue

They all do it inc Vauxhall and ford owners and it annoys the shit out of me stage 3 remap so they have ... bhp err no generic map or not every car is different engines produce different figures

Newer cars tho they all have exactully the same bits on and that's something I like about the R no two are the same. Yes bits are similar or if something works use it but no 2 are the same

It's been about for ages ... used to describe state of modification so stage 1 was like air filter exhaust ...and so on ... now it's used in terms of generic maps along with mods it's pretty much been bought about by tunning company's who offer tuning packages... tut modern day cars a lol