Twin Charged FD - Fraternal Twins

RX SE7EN · 03-15-2011, 02:15 PM

The flow will be:
Clean Air -> Turbo -> Supercharger -> Throttle Body -> UIM

I was originally going to have some valving, allowing the turbo to bypass the supercharger at high RPM, but have since decided to keep them in series (compounding) all of the time. Once I have it working, then I'll do some R&D to see if I can come up with a bypass system. I've got a good design for it, but time constraints and cost will keep me from exploring it for a little while.

Your confusion may have been caused because I copy/pasted my old build thread from the other forum, and skipped a lot of the discussion around which routing combination to use. My research concludes that compounding the turbo into the supercharger is absolutely better than vice-versa. I do like the idea of a bypass system (would really come in handy if I decide to use a smaller than stock supercharger pulley, so i can almost over-rev the supercharger by 6k rpm engine speed for even more boost down low and then let the turbo take over). But that can wait until I have a basic system that works.

And I swear I'm not an alcoholic. My kitchen table triples as a liquor cabinet and car part picture taking stand haha.

03-15-2011, 02:15 PM	#1
RX SE7EN Rotary Fanatic Join Date: Feb 2010 Posts: 183 Rep Power: 16	The flow will be: Clean Air -> Turbo -> Supercharger -> Throttle Body -> UIM I was originally going to have some valving, allowing the turbo to bypass the supercharger at high RPM, but have since decided to keep them in series (compounding) all of the time. Once I have it working, then I'll do some R&D to see if I can come up with a bypass system. I've got a good design for it, but time constraints and cost will keep me from exploring it for a little while. Your confusion may have been caused because I copy/pasted my old build thread from the other forum, and skipped a lot of the discussion around which routing combination to use. My research concludes that compounding the turbo into the supercharger is absolutely better than vice-versa. I do like the idea of a bypass system (would really come in handy if I decide to use a smaller than stock supercharger pulley, so i can almost over-rev the supercharger by 6k rpm engine speed for even more boost down low and then let the turbo take over). But that can wait until I have a basic system that works. And I swear I'm not an alcoholic. My kitchen table triples as a liquor cabinet and car part picture taking stand haha. Last edited by RX SE7EN; 03-15-2011 at 04:08 PM.