yeah... there really is no reason for twin turbo other than that fact that you can say "i have two turbos" one single turbo is way more effective that twin. also, there is more potential for power and stuff if it turbo'd. i prefer turbos.

^^^^^i'm lazy and it requires too much fabrication and money, though i do realize people will convert supra, skyline, and even 300zx to single turbo. Though the turbos are parellel on my car compared to a supra or skyline so ......

huh? i miss what you are saying

there is a turbo on each exhaust manifold

and your car is?

1991 Nissan 300zx TT ??

i thought zx's were set up the same way?

yes what is your car?

no it's not set-up like a supra or skyline partially because it's a v-6 compared to the skyline and supra being a inline-6 and yes my cars are in my signature

cam tuning could have ment two things, either getting a cam that was made for running turbo or supercharger or retarding or advancing the timing as to change valve movement

I thought that having a twin turbo was good. I thought they put on one smaller turbo so that you get a turbo at lower RPM's and then they put a bigger one in so you get a Turbo boost at hight RPM's and that it decreases turbo lag?

When people super or turbo there car, do most add a bigger throttle body, and intake mani's?

Depends on the twin turbo set up, I have a v6 (vg30dett if you want to look it up) There is a turbo on each exhaust manifold where the have there seperate piping and run into seperate throttle bodies and come together in the intake manifold. Then they have twin turbo set-ups like you said with a smaller turbo that leads to a bigger turbo. Some people like it some don't which is why some will switch to a single turbo.

Also when people that supercharge or turbo a car people will add bigger throttle body and ported intake manifolds but not all will. I'm sure you'll yeild greater results by doing it though because it helps increase air into your engine.

Ok so compression ratio, What exactly does that mean? so if it says 8:1 what does that mean?

What is the compression ratio for the 3400? Is it a good ratio or bad?

that application is generally reffered to as Bi-turbo. a truw twin turbo setup is 2 turbos the same size. Bi-turbo applications can be found readily on maseratis. they come to mind with me first when i hear "bi-turbo"
it also doesn't really work THAT well. i stand by my statemnt that one larger turbo can make the same and in most cases more performance.

it represtents how much compression of the fuel/air mixture takes place in the cylinder between when the piston is at the bottom, and when it's at top dead center.

Compression ratio.....Someone can chime on more knowledge than I have though what I do know the lower the compression ratio the better it is for boosted applications, higher compression ratio is better for a naturally aspirated motor and I forgot what the alero has but I'm sure someone else on here knows it.

well... in boosted applications, you are forcing more air/fuel into the cylinder, the higher the compression, the more chance of spontaneous pre-spark detonation of the mixture. that = bad. so you need to run higher octane fuels to supress that.

i think the aleros v6 is 9.5:1 ... my rex pushing 12.4 psi stock is 8.4:1 ... ive increased it to 14.5 with no knock.

So 8:1 would be like 8 parts fuel to 1 part oxygen?

What exactly is it measured in? like parts = what?

no... lol. that would be like if you had 9 cups of fuel/air mixture and then the piston compressed it down to the volume of 1 cup before it was ignited

You have a Rex Nate?