View Single Post
djdawson2 djdawson2 is offline
Registered User
Join Date: May 2009
Location: Evergreen, CO
Posts: 231
Send a message via Skype™ to djdawson2
CIS = continuous injection system... it is an early generation of Bosch fuel injection, and commonly known to be... um... less than excellent, and doesn't typically respond well to engine mods.

Bar = pressure, turbo pressure or "boost" in our world. 1 bar = 14.7 pounds per square inch. Stock boost level on a 930 is .8 bar. Typical mod is to increase it to .9 or 1 bar. The turbo itself is what forces induction on a turbocharged engine... and the compressor ("cold side") is driven by exhaust gas flow from the engine being sent through a turbine... known as the "hot side" of the turbo.

An "upgrade on the wastegate section" probably means that he changed the wastegate spring. Changing this spring is what raises the boost level from the stock .8 bar to something higher.

None of this is as complex as it might sound. It's an NA engine with a hairdryer.
Old 12-14-2009, 07:53 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #23 (permalink)