Firstly, if only by the codes, I'd say you have a vacuum leak somewhere because of the low air flow but your turbo is flowing more?. Also your CEM and ECM are complaining about the fuel pump relay, or could be old codes. Clear them and see if they come back. The rough start...I can think of a few th...

While not really similar, I am experiencing several problems with HU650. Thread is a few below this one, or maybe 2nd page.

In my country it could easily fetch $10k or more maybe less because of the age, but a 2007 will surely get this much at least.

Took me a while but finally found it. It was a cam cover leak. A little bit of headgasket sealant on a very small area has so far fixed it. Obviously time and driving conditions will tell.

I could only imagine it being a vacuum leak. So my advice is to try spraying around hoses and intake manifold and throttle body with carb cleaner, should reveal any vacuum leaks. Vacuum hoses(in bad condition) when reinstalled tend to be in much worse shape than before taking off as the act of pulli...

Do not for the love of God remove the o2 sensor and run it like that. I stupidly did this at the behest of a friend whilst disregarding my own better judgement and severely damaged the firewall insulation in a matter of 10 seconds.

All of them are new. Varying brands so not volvo, but I believe one of the two causes accelerated damage to the other. So a shot lower torqurod places a lot of strain on the top one and vice versa. But also a problematic transmission that shifts oddly say jerking between P and R would also accelerat...

Here is the build log https://www.swedespeed.com/threads/volvo-s60r-gt3582r-dyno-692-580-awhp-torque-tuned-by-urbastuning-wordpress-com-gustav-aka-contrast.562977/ https://www.swedespeed.com/threads/dougys-s60r.159820/ The shims do move but no reports of liners popping up. https://www.swedespeed.com...

Step 1 unplug the VVT solenoid connector and see if it still idles badly.

Ahem, the compression of a healthy B5244S/S2/SG/S6 engine should be 180 psi at least. Those are naturally aspirated, for turbo I'd imagine slightly lower than this. The most important thing is to check for evenness in compression, you don't want to see more than 5% difference between any cylinder.