Twin Charged FD - Fraternal Twins

RX SE7EN · 03-15-2011, 07:18 PM

A few different ways:
1. the wastegate on the turbo will be opening earlier due to the compounding multiplier effect that the supercharger will have on the turbocharged air. Meaning the turbo will actually have to do less work in order for the engine to see any desired PSI. And since the supercharger alone will never produce more than 10-15psi (due to pulley sizes), the turbo wastegate will regulate all boost above those levels by reducing turbo CFM (allowing more exhaust air to bypass the turbine).

2. Intercooler. My above post is flawed, sorry about that. the true flow is this:
Fresh Air -> Turbo -> Supercharger -> Intercooler -> Pipe to throttle body (methanol added) -> throttle body -> UIM.

3. The methanol mentioned above will also reduce heat

03-15-2011, 07:18 PM	#11
RX SE7EN Rotary Fanatic Join Date: Feb 2010 Posts: 183 Rep Power: 16	A few different ways: 1. the wastegate on the turbo will be opening earlier due to the compounding multiplier effect that the supercharger will have on the turbocharged air. Meaning the turbo will actually have to do less work in order for the engine to see any desired PSI. And since the supercharger alone will never produce more than 10-15psi (due to pulley sizes), the turbo wastegate will regulate all boost above those levels by reducing turbo CFM (allowing more exhaust air to bypass the turbine). 2. Intercooler. My above post is flawed, sorry about that. the true flow is this: Fresh Air -> Turbo -> Supercharger -> Intercooler -> Pipe to throttle body (methanol added) -> throttle body -> UIM. 3. The methanol mentioned above will also reduce heat