The size of turbo you can run on a lancer isn't large anyways, you're looking at a T-28 or 16G which have quick spool and low lag anyways. Adding a second turbo would just be pointless.

You can put a normal turbo and get one of those electric turbochargers that increase hp like .000000000001% to hook up to your intake and call it a day j/k

But in all honesty I don't think twin turbos on our lancers is practical. Too many restrictions to bypass

pointless to try.
if you dont want lag throw on a small turbo.
max boost you'd see (on a built lancer) would be around 18-20 psi. and thats with a lot of work. i could see a twin set up good if you are pushing higher boost levels but your not.

As has been said before, it's not worth the money and tuning. The car gets a decent boost out of one turbo. 2 would be overkill. Plus, how small of a turbo would be needed to spool up quick off of just 2 cylinders? It would look cool, but not be best for performance.

yeah, the whole point is in the grand scheme, stock or heavily modified. Obviously you're limited on boost with a stock lancer...I'm surprised you think 20psi, I've heard 5-7psi tops without significantly modding the internals. I mean, I guess it could be done, but I'd be scared with that setup as a daily driver without supporting mods.

Maybe I should throw a hypothetical argument in. I'm not planning on 300whp or anything like that, I'd be satisfied with 200-250 with a car this size. I've had 300+whp on a car MUCH heavier than a lancer, and frankly that kind of horsepower in a daily driver is a bit silly without the weight to stabilize it. If I was considering a track car, the sky would be the limit.

I'm think in a scenario where you'd want peak performance and response in the 0-4500 rpm range, with plenty of beef and response in the 4500-6000 range for passing/etc. I can't see any kind of *legal* situation needing more beyond this outside of a track. Obviously I'm biased in this hypothetical situation with a 6000rpm limit I've been told by others (honda guys mostly) that turbo's will make FULL boost by 3-3300rpm...so wouldn't having a twin turbo setup that was matched perfect be the ideal situation to pick up after 3300rpm?

I've always heard with imports that for daily driving, a small turbo is the best option for more overall performance. And that if you are going for drag racing, get a larger turbo, but dont get one larger than it needs to be, because you will actually lose peak horsepower. This is because it does actually take energy to push the turbo, and if you are pushing it harder than it needs to be, you are just wasting horsepower to push air through the blow off valve. So my thought was that if a smaller turbo could work to drive horsepower for the larger turbo, then it would be a win/win situation...

Obviously the amount of boost doesn't matter if the turbo's an inefficient bastard, so my hypothetical situation would involve two highly efficient turbos running optimally cooled air...

So this is what I see so far for turbo choices, with the T2/T25 [small turbo, common on 300zx twin turbos, hybrid t2 turbine side, t25 compressor side]:

T-25, 14B, S16G, B16G, T-28, Evo16G, 18G, 20G TD-05, 20G TD-06, 50 trim, FP Green, 60 trim, FP Red, 60-1, FP3052, GT30R, SCM6152, FP3065, SC6152, FP3565, GT35R, FP3575, T-67, GT40R, T-70, T-72, GT42R
from approx 250whp to 1000+whp

Found this interesting article on picking turbos: http://www.gnttype.org/techarea/turbo/turboflow.html just, fyi

i was thinking the same thing

most twin turbo supras make it a single turbo

You either need a supercharger or a tiny turbo like a t25. There is no reason anymore for a sequential setup anymore

You can indeed run 20 PSI but you need a built motor and a small turbo.
A turbo making full boost at X RPM does not mean it is useless after that RPM, you want a turbo to peak midway through your RPM range so it doesn't kick in too early and run out of steam before redline or kick in too late and be effectively useless. You also don't want a turbo to make full boost all the way to redline, if you look at stock dyno plots of turboed cars, they always taper down at redline in order to prevent engine problems (since the stress put on a motor goes up by a factor of 4 with RPM).
Boost pressure has nothing to do with the blow off valve (at least in this sense), you are talking about the wastegate.
I suggest you do a lot more research on how turbo systems work since you are making some fundamental errors in you statements.

Agreed, although its a novel idea, theres just so much more to it than just using one turbo to power another, or one for low rpm and on for high.
Engine bay constraints aside, the rev range just isnt there. Its only gonna take one turbo to make steady boost thru a 3-4000 rpm range.

And i dont know about the rest of ya, but i'd much rather have a turbo in my car than get head from a midget!!!

jwick76, for your goal (no lag, power range in the lower rpms), your best bet would be supercharging. But, honestly, a T-28's lag on a Lancer is practically non-existant, while still be able to make a respecable amount of power (as far as what the 4G94 can handle)

I think any sort of twin turbo offering on any inline engine will soon be a thing of the past. Variable geometry turbochargers make a sequential setup obsolete.

dont forget with fwd, lag is aka traction control. Having a turbo/supercharger with very little lag will cause you to spin the tires badly in the first few gears. A simple t25/28 will have some lag to give you traction and still have the ability to hold power till redline. In my TT, i have ~300wtq at ~3k and its hard to plant the power since its almost insta-boost.

Yep just what people said!!!
Now let me Twin turbo my 350z. JK even though i have a potential engine for twin turbo, i rather have a big single turbo!!! i am more of drag than track!

8 turbo V8 http://videos.streetfire.net/video/I...7-is_55761.htm

There is a new VW engine that i would love to import. It is a 1.4L engine that has twin charger on it from the factory. Twin charger for those that dont know is a super and turbo charge setup. It only makes like 200bhp but just imagine the possibilities!!!