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Old 08-20-2011, 01:42 PM   #24
Steve.804
Scooby Specialist
 
Member#: 68647
Join Date: Aug 2004
Chapter/Region: MAIC
Location: Richmond, VA
Vehicle:
07 STI
Rotated 35R Jorge Tuned

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Wow this thing with some Dinan software would be a monster. 1000ft/lbs of torque all of a sudden does not seem that far away

I want an X5Md!

Quote:
Originally Posted by arghx7 View Post
Not sure if serious but... I speculated about this in another thread. Based on what I have seen from regular sequential turbos (Supra, Rx-7, Legacy) and twin charged engines (VW), it could work like this:



Basically the electrically driven compressor (electric turbo, whatever you want to call it) will supply boost at the lower rpm range and a butterfly valve will separate its air from the two actual turbos. The exhaust will spool up the two turbos and a relief valve (kinda like a blowoff valve) will be open while they come up to speed. Then when it's time for the twin turbos to come online, the butterfly valve will open, the relief valve will close, and the electric compressor may be de-clutched.
I like everything but the electic turbo. That thing would be crazy expensive if it failed out of warranty.

It would have to be quite the exhaust manifold, but what if you could have a butterfly valve in the EM that was driven off an actuator similar to a boost activated exhaust cut-out. That way once boost reached a certain pressure it can shut down the smaller turbo and focus exhaust pulses at the two larger ones.
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