whats this

[whitequasimodo]

hey justed wanted to ask what this is and also on an 88 turbo, what the normal oil pressure. i have a nock sensor going off and im not getting any oil pressure. so im putting two together, and thinking thats why im not getting any pressure. o i do get pressure when the turbo kicks in but it goes up than just goes down when its not active. the pressure line is just above the bottom.



and last but not lest what does it mean when the turbo starts and your car seams to stutter befor u get full boost?

thanks