I don't have on hand for CIS-E, but for CIS-E3 opening pressure is stated as 4.3 to 4.6 bar. Ben [Date: Tue, 10 Feb 2004 11:36:45 -0500 From: "Brendan K. Walsh" <bkwalsh4201 at hotmail.com> Subject: injector opening pressure? Anyone know what the opening pressure is for the cis-e and e3 systems? TIA Brendan]