JDM_DURAMAX2.8LWN_ML

Ok. I didn’t want to mention it but I was thinking about twin-turbocharging my truck. I got to thinking about it and how in efficient even turbos are (compressor efficiencies of about 80% at best). Since a turbo’s function is to pressurize incoming air and force it into the upper motor, and turbos are driven by high pressure exhaust gas created from the combustion process, couldn’t I just bypass the turbo altogether and route my headers back into the throttle bodies?

I’ve been thinking about how fast the GMC Syclone was for 1991. With its a Mitsubishi turbocharger and Garrett intercooler, its 4.3 L LB4 V6 was advertised as being capable of over 280 hp and 350 lb·ft of torque (dyno-tested numbers are closer to 300 hp and 400 lb·ft). It also had a custom Borg Warner 35/65 split transfer case and was the first production truck to have anti-lock brakes. With these innovations, it could do 0-60 mph in 4.3 seconds and complete a quarter-mile in 13.6 seconds.