no turbo-charging/supercharging options

[MOTORTRENDmitch]

why is it that in most cars you can only install one of the _______chargers?
it makes no sense really.. and other cars that you cant at all? i dont understand PD's reasoning about that

 

[EAGLE 5]

Just like in real life, cars have certain limits as to what you can do to increase their volumetric efficiency so turbocharging and supercharging in GT5 may or may not be possible for a number of reasons.

One is basically room and availability of parts. Some cars just simply cannot have a forced induction system installed because there's no room. Take the 350Z it took a long while to get a turbo kit engineered by aftermarket companies because they had to work out the limitations of the space in the engine compartment. Supercharging was available but you had to cut the hood in order to fit the compressor (like in the stillen kits).

Another reason is the "why would you?" reason. Why would you waste money buying components (providing they even exist) to increase the performance in plain and basic economy cars? It doesn't make sense from a money standpoint when you can buy a better car right off the bat.

Finally it is quite difficult to turbo/supercharge cars that have very high compression ratios from the factory because it becomes significantly easier to induce detonation or suffer from spark plug blowout which results in either a blown motor or if you're lucky an incomplete combustion stroke which doesn't yield the power you're looking for.

When you take these factors in consideration you see why a lot of vehicles don't give you that option in the game. Still for all the vehicles that fall outside these categories I fault the lack of data that PD required to produce accurate performance models to reflect the different levels of trims of turbocharging or supercharging. Simply put they didn't have enough material to make an accurate model of the performance in many of the cars.

Basically as nice as it would have been to have an array of tuning options for each vehicle the reality is that we are lucky we have what we have.

 

[brycepunk]

I was going to say something, but Eagle5 seems to be the authority here. I defer to him.

 

[savage388]

EAGLE 5 I believe that it more or less boils down to personal opinions within pd. Anything American pretty much has a supercharger while Japanese cars have turbo options and for the most part European cars have neither except small displacement hatchbacks.

 

[Torque_13]

EAGLE 5 pretty much sums it up. But I wanted to add, (if I remember correctly) that cars like the BMW M3 (E92), M5 (E60), Lexus IS-F, LFA, and the McLaren F1 uses ITB's (individual throttle bodies.) I don't think that you would be able to add forced induction without replacing the throttle bodies at least.

 

[CSLACR]

EAGLE 5 I believe that it more or less boils down to personal opinions within pd. Anything American pretty much has a supercharger while Japanese cars have turbo options and for the most part European cars have neither except small displacement hatchbacks.

Yup, because nobody believes in stereotypes like the boys at PD.
Twin Turbo Vettes have been around for 20 years, Turbo Trans-Ams about 30 years, and twin-turbo Vipers for at least a decade.

It seems non-turbo Japanese cars can get Turbo's or Superchargers, and they're pretty much the only ones. I figure one quick look at the 1000 car lineup gives away all the answers though.

 

[RufusGonePunk]

EAGLE 5 I believe that it more or less boils down to personal opinions within pd. Anything American pretty much has a supercharger while Japanese cars have turbo options and for the most part European cars have neither except small displacement hatchbacks.

This.

Any car can be turbo'd, even if you have to get creative with the placement of the turbo and it's ancillaries.

 

[GTP_Monkey]

There is also another issue, Take the Mclaren F1 for instance IRL it does'nt have a turbo and also you cant fit ine in GT5. So PD could well be replicating real life in some instances. And i note that a few american cars cant have turbos but can have superchargers, now im not sure here but I understand some time back that was the prefured method in america and not turbo's.

 

[analog]

There is also another issue, Take the Mclaren F1 for instance IRL it does'nt have a turbo and also you cant fit ine in GT5. So PD could well be replicating real life in some instances.

That doesn't explain the ability to turbocharge other cars which also aren't turbocharged in real life.
I think instead of just the real life technological limitations (which EAGLE 5 pointed out and which are probably taken into account also) it's mainly a choice made by PD based on what's considered 'appropriate' or what's commonly done in real life on these cars.
If you take the McLaren F1 you mentioned as an example, I know Gordon Murray hates turbos and prefers N/A engines, combined with the fact there aren't many F1's and the vast majority (I think all of them actually) aren't fitted with an aftermarket turbocharger PD perhaps thought it would be inappropriate to offer a turbo.
Having said that, it's completely 'inappropriate' to fit a turbo on a Jaguar XJ13 or Ferrari P4, yet it is available on these cars for some reason.
Maybe that's due to these cars being so extremely expensive that the only way to tune them is to fit something you can remove again.

 

[SkateNj]

How about give us an option to turbo and supercharge an engine

 

[sumbrownkid]

I think in the long version of ending credits, Amuse is thanked by PD for providing performance parts data.

Maybe they did try to see if the cars can be turbo'd or supercharged.

Or maybe they just googled it.

 

[I'm Motarded]

How about give us an option to turbo and supercharge an engine

I know, right.

Out of all the Nissan's I'm shocked to see there's no "March superturbo" One of the few road cars to come with both chargers fitted straight from the factory.

 

[Tornado]

I think it would have saved everyone a good amount of time if the first response had been "the tuning in GT5 isn't very good," because that's about the size of it.

 

[MOTORTRENDmitch]

thanks for the great answers everyone, ecspecially eagle 5!

 

[Raven_WET01]

You can turbocharge absolutely any engine. Engine compression can be lowered with a change of pistons and a few other changes to get it dialed in with boost. If anything, you should have two engine upgrade paths that you can follow, because they require different builds. One would be a naturally aspirated engine build, and the other would be for engines that are boost reliant. That way you would be allowed to add more boost (until you need to upgrade your turbo system) as you upgrade your engine to handle it. Some engines will be better off being built one way or the other, just like in real life.

Besides, has anyone else actually looked at the boost gauge in both this and previous GT games? Something tells me a stock Daihatsu engine can't handle that much pressure...

As for room, they make rear mount turbo kits which take up very little room (if any) in the engine bay. You can also relocate the battery, perform an AC delete, etc. to free up more space. The aftermarket bolt-on kits are designed to work with an otherwise stock vehicle with very few changes. An afternoon's worth of effort will allow for plenty of room in most engine bays.

In addition, you don't need an available bolt-on vehicle-specific kit for a turbo to work. They sell compressors. They sell intercoolers. They sell BOV's. They sell piping. They sell oil lines. Very few people I know buy the actual kit for their vehicle; they usually just piece them together based on what they have to work with. If they spent a little time freeing up their engine bay, they're usually able to route the pipe better than what's available in the kit.

Superchargers are a different story though lol