problems with the ecu / boost

[lind4hl]

hi, my car is only rolling @ 0,7bar boost, i got these codes from the box:

00519 - map sensor
65535 - Internal Control Module Memory Error

someone know how i can fix it ?
or is the box crap so i just will buy Vems instead?

[A80Avant]

could be your map sensor in the ECU dead.Also the second code comes up sometimes if you are using generic chips.

[lind4hl]

can i only change the mapsensor in the box?

[A80Avant]

yes you can.although bosch 3 bar Kpa sensor is difficult to find anymore.Try ebay.de there a shop selling them

[BRY]

Is it chipped?
Have you got the standard chips to put back in?

[UrS4boy]

can i only change the mapsensor in the box?

You might want to read this (and the link out to VMAP):

http://forums.audiworld.com/s4s6/msgs/140335.phtml

[lind4hl]

it completely standard under the wintter i have built an 3" stainless exhaust and took out the carguard alarm that didnt work, thats all. (i took of the battery when i welded) and after the winter i tought it didnt go so good installed a boost gauge and only 0.7 bar boost

[UrS4boy]

it completely standard under the wintter i have built an 3" stainless exhaust and took out the carguard alarm that didnt work, thats all. (i took of the battery when i welded) and after the winter i tought it didnt go so good installed a boost gauge and only 0.7 bar boost

When people with UrS4s have chronic low boost, I point them to the moisture trap (ususally there are no codes). Here is a post on how to find and fix the proble for a C4 UrS4. Your's will be similar, but different:

http://forums.audiworld.com/s4s6/msgs/230668.phtml