When I took this video I thought I had a boost leak. The legacy would whistle and it would increase with revs.
I was achieving about 10psi max when this video was taken.
Prior to no boost (But vacuum still reads about the same, minus the boost part)
Now I have no boost at all, the whistle is gone, but the car still runs just fine (Minus boost of course).
I read roughly -10 vacuum at idle, and it goes up to about -1 during acceleration and that is all.
My DAM reads 1.
I am getting no feedback knock/Fine knock learn.
My A/F ratio sits right around 13-14, unless I let off the gas. Then it jumps to 20ish then back down.
My car idles good.
I only go through a quart or so of oil an oil change. (5w20 Castrol Synth blend, dealership)
Wastegate duty starts out at 90% upon initial acceleration, then drops down to about 70%, but cruising speed it sits at a low %.
When I am driving, the car goes fine until about 3k rpms, then it feels like it is choked. (I'm assuming the AVCS is kicking in to retard timing for the expected boost)
I am running Cobb stage 2(Which I reflashed in case it was a tune related issue). Invidia Catless DP. No Name Catback. Turbo XS BOV.
I noticed my intercooler end tanks bending the tabs out a little on the lower intake side of the intercooler. I presumed that was the sound.
I have checked all the vacuum lines I can see (Including the T below the intercooler). They all are attached.
Bottom middle tab is cracked, and broke off when I tried clamping the core back against the end tank. (I have a replacement intercooler coming in today)
I can rev the car at a stand still and I don't get any turbo sound/pressure build up at all.
I feel like the turbo may be seized due to oil starvation (I will check shaft play when I replace the intercooler).
What other possibilities are there?
Waste gate stuck open?
Plugged vacuum line?
Boost Control Solenoid?
A Cracked hose in the intake tract?
Loose hose in the intake tract?
Up-pipe may still have cat and it is clogged? *Highly Doubtful there is still a cat (That would probably throw a CEL though if it was clogged)
I'm going crazy trying to figure this out!
Thanks in advance.