[teknochild]

Originally Posted by MichaelATL

Therefore, a LSD would help in many circumstances, especially a launch with a lot of power

it will also make your car explode if the dsc kicks in after you put it on

[BoostedBMW]

Originally Posted by Corey

Experience is better than theory, and I'm quoting the experience of JGTC cars over the last decade.



So you can spin off the track as soon as the turbo spools coming out of corners?

I have a turbo car also, so i'm not some newb on here that is new to boost. I wasn't saying that you would spin off the track as soon as you hit boost, but I guess you can quote me and take it to the extreme if you would like. I was just saying that its not always an ideal setup to have a large turbo for a road racing. Obviously you disagree, more power to you if you like to race with lots of turbo lag, worse throttle response, and boost that hits hard in the top of the rev-band with a sucky mid-range.

[freddiemac]

There are a lot more road racing 930's, 935's and other single turbo'd 911's out there than 996TT and newer porsche 911's. I'm not talking about 20 min sessions of DE. I am a member of the PCA club, so if you go out to any PCA races, you'll see that twin turbo 911 cars out there are very very rare.

the newer 911 engines are efficient and large enough to run 2 large turbos (each being relatively efficient in terms of high end exhaust flow), so it's not really part of this conversation.

Spool in road race is actually not as much of an issue since you're > 5K rpm at all times. You'd want to configure a turbo that flows alot yet has a very linear and predictable power delivery.

Originally Posted by BoostedBMW

^ My friend use to own a 996TT with larger turbo's and currently owns a 996 RUF GT2 and through him and his friends I have seen tons of high HP porsche's, but I have never seen one single turbo conversion. I have even heard of twin GT40's, but never a single turbo on that car. I guess its safe to say that its not common if it is done, and yes, large single turbo's flow more up top, but just because that is the best application for some platforms such as the RX7, it doesn't make it the best choice for road racing in all cars. On a drag strip I could understand, but why would you want the turbo to take a day and a half to spool and hit hard all at once around a circuit?

[ksfrogman]

Originally Posted by herbz

What comes after ECU/Exhaust?

The new M3.

[freddiemac]

Originally Posted by Corey

Experience is better than theory, and I'm quoting the experience of JGTC cars over the last decade.

If I remember correctly, the FD's that have ran in JGTC are single turbo'd, and if I remember correctly, RE Amemeiya team have ran an NA 3-rotor in the recent years.

Originally Posted by Corey

So you can spin off the track as soon as the turbo spools coming out of corners?

A properly configured turbo/engine combo will have very smooth and linear spool up characteristics, which is often valued over peak hp in road racing.

I'm not saying a single is always better than twin, What's I'm saying is:
IN ROAD RACING ONLY, one large free-flowing turbo > 2 small turbos designed for the street. If your engine is big enough/generate enough exhaust energy, then 2 big free-flowing turbos would work well too.

[Corey]

Originally Posted by BoostedBMW

I have a turbo car also, so i'm not some newb on here that is new to boost. I wasn't saying that you would spin off the track as soon as you hit boost, but I guess you can quote me and take it to the extreme if you would like. I was just saying that its not always an ideal setup to have a large turbo for a road racing. Obviously you disagree, more power to you if you like to race with lots of turbo lag, worse throttle response, and boost that hits hard in the top of the rev-band with a sucky mid-range.

I was just making a joke, nothing serious.

I'm not saying a single is always better than twin, What's I'm saying is:
IN ROAD RACING ONLY, one large free-flowing turbo > 2 small turbos designed for the street. If your engine is big enough/generate enough exhaust energy, then 2 big free-flowing turbos would work well too.

This I will agree with!