The light hasn't came back on but a week or two had a p0455 and went away and hasn't re came up. I believe it's a fuel or air issue
It's plausible but without having the car in front of me it's hard to say for sure. Have you had it scanned for codes?
Partsbimmer1 if you could share some of you knowledge on another thing it would be much appreciated. So from what I can tell on my 323 I should have one line going from the upper intake boot to the brake booster. Now previous owner removed upper boot and replaced it with a metal pipe. The line that would have gone from the upper boot to brake booster is now just capped off with a mini spectre ait filter. Would this cause any vaccum issues at all?? I can't find any info anywhere.