And yes, we need them…
Imagine - you just designed the perfect engine to go into a road super car, but you want it to enter some form of a race and oh no, FIA restricted the power for the certain class, and now you need to cut 101hp off the road going version.
So to make it easier - eg. not to retune the whole thing, just restrict the air flow
sounds reasonable?
I have to say, this is relevant to me and my cars 
How relevant is it overall? I have no idea
I think motorsport won’t be a thing in automation.At least untill some dlc’s
As restrictor plates are only relevant for racing applications I’d say that Automation doesn’t, in fact, need them. Sure, they’d make engine tuning easier for forum competitions but they’d bring nothing to the core Tycoon gameplay that Automation is being built for.
That being said; if the work required to implement this idea wasn’t time consuming and easily doable then I’ll put my hand up and say “I agree” if Killrob etc. ask for a show of hands! 
That sounds like some UI space taken up by a thing that doesn’t really have a gameplay reason to exist.
For now if you need to restrict your engine for a forum challenge you can simply make you exhaust pipe too small on purpose.
Yes, but wouldn’t a restrictor plate have almost the same stats effect as that anyhow, whilst taking up valuable UI space, and not being useful for anything besides forum challenges?
I don’t really see the advantage?
an actual restrictor would be more precise e.g. you can cut off from say 668hp to 505hp without much effort
and yes, agreed on the fact that there’s no UI space left, but hey, a man can dream, can’t he? 
at least I’m not asking for laser ignition 
How many production cars (100+ built and sold) throughout the years had restrictor plates? 
How many had laser ignition? 
Define production! haha All of the cars used on the NASCAR circuit have them. There are more than 100 built for any given season. Though, I suppose, they’re not “technically” available to the general public (and cost between $100k-200k each)
I’m not sure but I think Honda had restrictor plates in the 1.5i Civic (5th Generation) engines. When you changed them you had noticeable more than your standard 90hp.
a gain of 10-15bhp AFAIK
and that’s probably the only one i can think of that was done that way…
IDK how modeled the world will be in tycoon, but some countries have their taxes based on bhp instead of emissions or actual engine size
Honda had the right idea at the time, model with D14A3 has 75hp, D14A4 has 90hp, same engine still and different tax and insurance, done very cheaply…
In addition to restricting the exhaust size could you also restrict the rev limit to simulate this?
Not so much without undercooking the power curve. I don’t know how badly that impacts performance index, but I can see how that would make many of us twitch
I know the performance index takes into account power beyond the peak. before I knew better I would put the red line at peak. When the PI was introduced i amended my engines and the cars were much better around
Actually it might. Lets say youve just built a car but for the next year emission regulations are tighter and you cant change the car or engine for some reason, so you put on a restictor plate on the engine.
[quote=“Ianvincible”]
Actually it might. Lets say youve just built a car but for the next year emission regulations are tighter and you cant change the car or engine for some reason, so you put on a restictor plate on the engine.[/quote]
Restricting the intake flow is unlikely to help emissions greatly.
Emissions control devices don’t work by reducing power output, it’s a side effect of the system’s operation. Exhaust gas recirculation systems do cause a small but significant drop in combustion efficiency, for example.
And seriously, at this point it seems like you folks are just trying to come up with reasons to justify restrictor plates being a thing, rather than actually wanting them for a good reason
[quote=“Sayonara”]
Emissions control devices don’t work by reducing power output, it’s a side effect of the system’s operation. Exhaust gas recirculation systems do cause a small but significant drop in combustion efficiency, for example.[/quote]
Yeah I know I just got mixed up between air-fuel mixture and restrictor plates, thanks anyway.