First let me start off with I have done a search on this subject and came up with a liittle info. After i installed my front mount i have been experiencing studders @ wot sometimes it comes in at 12 psi sometimes lateit changes. I have read it may be because of running rich but I would like to know ALL of the possible causes so I can start trying to cure it because buick night is this wednesday and I need to be there. Thank you for your help....ukau