4 Cylinders, 2 Turbos, 1 Supercharger....Insanity!!

mikeyb

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01 BMW 325xi Touring
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His goal is to make 800+ WHP. Best part is....the a/c is still in tact and the car gets driven....at 26 mpg when the supercharger is off! The STi has 2 GT30's and an AMG Supercharger.
 
i don't even know what to say to that...awesome freakin job. how he fit all that s*** in there, I'll never know. And the AC is still intact? my god...
 
Ok some body tell me how it works! Do the turbos feer the super?

turbos-intercooler-supercharge-intake

Or what. I just can't see it. That just kinda seems over kill though. I wonder why they did that insted of just using 2 big turbos and uping the boost. But then again I know nothing about boost.
 
i too am wondering about the flow. would it all be sequential? i suppose maybe the supercharger is more for power while the turbos are spooling? again i am with the guy above. i know very little when stuff gets that complicated.
 
Hughes412 said:
Ok some body tell me how it works! Do the turbos feer the super?

turbos-intercooler-supercharge-intake

Or what. I just can't see it. That just kinda seems over kill though. I wonder why they did that insted of just using 2 big turbos and uping the boost. But then again I know nothing about boost.
Don't quote me, I didn't look at the car. Most I have seen like this use a roots type blower for low-rpm boost. Once it hits a certain rpm/psi, (turbos spooling the whole time) a bypass valve opens and routes air around the blower.
 
From what I can see it's Intake-Turbos-Supercharger-Intercooler. The Intake to Turbos is pretty obvious. If you look at the engine on the stand (the shot from the front) you can see the Supercharger inlet pipe right under the wastegate. The poished pipe directly under the airfilters is the Charge pipe from the left turbo that tees into the charge pipe from the right turbo (not visible) and then the visible supercharger inlet pipe. The supercharger outlet is just infront of the passenger strut tower and routes to the intercooler. From there the charge pipe runs back up the driver's side and connects into the intake directly below the pipe connecting the driver's side turbo to the supercharger.
 
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