Can I read boost levels with VAG-COM?

yes, you can read boost levels with the vag-com, block 115. but i don't believe that the AEB has the pressure sensor, so it'd just show the requested boost, and not the actual. and it's measured in absolute pressure in millibars

AEB's do not have a pressure sensor. Before I start logging I read MB 115 #3 with the engine off to get the ambient pressure and substract that value from the readings.

veedubbob said:

If yes, how? My `99 AEB is very lazy. Trying to find out if the turbo is working at all. Also, it might be related, every time the engine is decelerating there`s a metallic rattle comming from the wastegate area. Any inputs apriciated

Rob

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When I had a metallic rattle/grinding-type noise during deaccel with my AWM, the dealership found a busted hose of some sort, and it was fixed under warranty.

SirWired

There's also a heatshield or the airbox in that area.

Can't log boost on an AEB, but you can log block 003 and check max maf readings.

log block 114 for specified and actual load, just as useful.

sirwired said:

When I had a metallic rattle/grinding-type noise during deaccel with my AWM, the dealership found a busted hose of some sort, and it was fixed under warranty.

SirWired

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can you find out exactly what was fixed and let me know?

veedubbob said:

...every time the engine is decelerating there`s a metallic rattle comming from the wastegate area...

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You need a new turbo. It might only be the wastegate, but replacing the wastegate on a turbo as old as yours would be a waste of time. Just get a new turbo. Good excuse to get a K04, GIAC PC-16 file, 3 bar FPR and 310cc injectors. Wake that AEB up...

P.S. Get a boost gauge. The most important gauge for a turbocharged car.

doesn't the pc16 require fmic also?

Rusty said:

You need a new turbo. It might only be the wastegate, but replacing the wastegate on a turbo as old as yours would be a waste of time. Just get a new turbo. Good excuse to get a K04, GIAC PC-16 file, 3 bar FPR and 310cc injectors.

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Yup, I`m pretty sure the rattle is a loose wastegate flap. A new turbo it is. I`ll see what I can afford. Btw, does my stock cat bolt on to the K04, or I have to get a down pipe too? Thanks for the help guys! :thumbup:

k04-15 is a complete bolt on

RustyP.S. Get a boost gauge. [I said:

The[/I] most important gauge for a turbocharged car.

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x2

when i got mine, i just thought of it as something "cool," now i dont know what i ever did without it

D.Passat00 said:

doesn't the pc16 require fmic also?

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pretty much, its the high boost file. i think PDK16 is the stock AEB file.

dutch-mountains said:

AEB's do not have a pressure sensor. Before I start logging I read MB 115 #3 with the engine off to get the ambient pressure and substract that value from the readings.

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hey, thats a nice tip! thanks!:thumbup: