Dude, its been done. And it works. And it works well. Not to mention.... I did it and it works incredibly well....

i didnt mean to sound like a know it all or anything man
if it worked ill take your word for it
but i will still stick to my guns on it not being as efficient
but it is unique so i guess to each their own
(its been a long day didnt want to sound like a prick haha)

Read the threads I listed earlier.

Twincharging does work, it is just not economically feasible to do it for OEM, and you need to be able to fab parts if you want to do it yourself.

i read it....and im not trying to start ---- dude.....but also realize that there are other people on here that know it as being less efficient too....you made it work and thats cool
i was throwing in my two cents on why i wouldnt do it and i have actually heard of damaged parts and other issues....im not claiming that it wont work all together because as you have displayed it can work.....ill just leave it alone cool?

Pics, dyno?

idk about that..

It sounds like over all it would work well but I agree with KJell on it being less eficient, but none the less it will work and work well.

Wouldn't it be easier and cheaper to build your motor, NOS it on the bottom to make your low end power and use a larger turbo for big HP numbers. 575 ponies on that Opel w. Volvo engine seem good, but I know NOS and large turbo would throw out bigger numbers. It would be cool to be twincharged, but again... seems the HP to Cost ratio would high. It's a neat idea and if you have done it... Good job! It's cool that we are all experimenting and making ideas in our heads come together. Hell, if none of us tried something because it was inefficient or no one thought it would work... where would we be with our current technology? Do what you want and have fun. To the original question... twincharging is possible, but you could make more power for less following a different route.

thats what i was getting at
wasnt trying to squash fun or creativity im all for that

search for reddevil its actually a really cool thread about it and his project was very nicely done