Why does it feel weak?

Hey guys, so recently i noticed my fuel return lines from my injectors were wet with diesel when i would use the car and drive. so i changed the lines, and bled the system, but after i did that the car feels weak and from what i've noticed the turbo isn't spooling up as much when i put my foot down as it used to. Any ideas what it could be? and by feels weak i mean as in it feels like it has lost power.

You need a vag com scan to see if codes have been thrown.

Probably either left or inadvertently knocked off a vacuum line or if they are original, almost any movement of them causes breaks/etc. Also a cracked or broken hard line from the master cylinder brake booster is often cracked on the back side where it's hard to see. Any vacuum leaks affects the turbo actuator.
First things to check on a long list of possibilities.

Interweb guessing the leak was not in the fuel returns, but an injector or the pump or maybe a fuel line. You can rule out leakage by observation, then move on to low power issues.

@bobnOH the leak was in the return lines because after i changed them, there is no diesel leaking. its just after i changed the lines and bled the system, for some reason the turbo isn't spooling up as high in the higher end as it used to

PeterV said:

You need a vag com scan to see if codes have been thrown.

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I'm guessing a simple obd2 scanner won't work?

El Jimador said:

I'm guessing a simple obd2 scanner won't work?

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Results will vary. Worth a try.

ANY obd2 scanner will pull your codes. VCDS will help you work on the car if you need it.

Main cause of limp mode or loss of power is usualy a vac/boost line gone bad or a boost leak or lack of boost on demand. Many other issues cause limp mode but this is the most common. Pull the codes at autozone for free and report back.

hey guys. checked codes with OBD2. said something about my MAF. when i checked it the sensor was unplugged lol it works properly now

Apparently self inflicted??

yeah lol. I took off the air intake to take the serpentine belt off and disconnected that wire and forgot to connect it again

Make sure the vacuum vent hose gets reconnected to the airbox, too.
It will help keep debris from being sucked into the vacuum system.

flee said:

Make sure the vacuum vent hose gets reconnected to the airbox, too.
It will help keep debris from being sucked into the vacuum system.

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I've done that!