View Single Post
GJF GJF is online now
Slantnose from HELL
GJF's Avatar
Join Date: Dec 2004
Posts: 809
AFM744 your dead on you just added the next step (IC). Hobieboy all turbos, for the most part, will hold the same boost, but a larger turbo (compressor) will be able to make the same HP as a smaller turbo but with less boost because it moves more CFM than the smaller turbo.
Remember, boost is just a reference. Let's say you have a turbo that flows 600 cfm, and you have another that flows 800 cfm. Each turbo is rated at let's say 15 psi (almost 1 Bar) the 800 cfm turbo will flow 200 cfm more volume of air at the same boost level. So if you turn the boost down on the 800 cfm turbo to let say 10 psi. It would roughly make the same HP at 10 psi as the 600 cfm turbo at 15 psi. This is just an basic explanation.
87 911 Carrera platform
Twin Garrett's, Big Valve, Xtreme Cylinder Heads, JB Racing cylinders and machine work, custom JE pistons, GT2 EVO cams, GT3 oil pump, modified 3.2L intake, 80mm TB, custom Intercooler, equal length headers, DFI, KEP Stage 2 custom twin disc, G50 custom gear set, LSD, Tilton trans pump, Fluidyne cooler
Old 07-15-2008, 12:42 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #5 (permalink)