Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums - Camaro5.com - View Single Post

PMJ · 05-27-2013, 10:30 PM

For a while I've been working on "reducing" the lean spike after a gear shift. Occasionally it will cause knocking so avoiding is ideal to avoid timing to get pulled (or something worse). After much review, I had an ah ha moment today...the lean spike isn't the issue...it’s a "boost spike".

I never noticed this before, but on a gear shift, i will occasionally see a "boost spike" like pictured below. The boost spike is significantly higher than my "normal" max boost (i'm running 15-16psi, and the boost maxes out my MAP sensor at 22.3psi). As a result I get a lean spike and ultimately detonation.

Any others with a super charger seeing this boost spike on gear shift? Has anyone solved it?

05-27-2013, 10:30 PM	#1
PMJ Seeking 9s on M6... Drives: 2012 2SS/RS LS3 aka "BlackWidow" Join Date: May 2012 Location: Houston, TX Posts: 397	Boost Spike For a while I've been working on "reducing" the lean spike after a gear shift. Occasionally it will cause knocking so avoiding is ideal to avoid timing to get pulled (or something worse). After much review, I had an ah ha moment today...the lean spike isn't the issue...it’s a "boost spike". I never noticed this before, but on a gear shift, i will occasionally see a "boost spike" like pictured below. The boost spike is significantly higher than my "normal" max boost (i'm running 15-16psi, and the boost maxes out my MAP sensor at 22.3psi). As a result I get a lean spike and ultimately detonation. Any others with a super charger seeing this boost spike on gear shift? Has anyone solved it? Attached Images __________________ [SIGPIC][/SIGPIC]