I would like to fit a stadard AUDI turbo to AUDI A3 1.8 20V (APG ENGINE CODE). My engine block has no holes where the turbo is to be mounted, can i have this engine block sent to an engineer to have the holes drilled into the engine block?

SOURCE: Difference between Audi A6 1.8t engine and 1.8 engine

on the 2001 models:
1.8 - 125bhp
1.8t - 150bhp
1.8t - 180bhp

the only difference in the two turbo models is the ecu setup

SOURCE: engine audi a6 1999

HI,AT WHAT SPEED DID THIS HAPPEN,IF AT IDLE OR VERY LOW SPEED,HAVE A NEW BELT FITTED IF IT RUNS NORMALLY YOU ARE LUCKY,IF IT RUN ROUGH WITH BAD MISFIRE OR NOT STARTING AT ALL THE VALVES ARE BENT,PLEASE LET ME KNOW,ANDY.

SOURCE: turbo= not working

Most likely the turbo is gone. What ever part of the turbo went, just replace the entire turbo. Not serviceable 99% of the time. The engine will not like being driven for any extended period of time with a bad turbo.

SOURCE: engine light on, heavy smoke and engine burning smell (Audi 1.8T)

First off, how the Hell did they issue a DOT Cetificate, if the Emissions are known to be off the clock. Without causing stress, do you have, or can obtain the Emission Test Result Print Out from the Testing Station test Equipment. This is something they cannot refuse. DO NOT AUTHORISE ANY REPAIRS Come back TO ME with your story.
Regards,DT

SOURCE: have an engine code for a check engine light 1423

P1411 - secondary air injection system flow too low Bank 2.
P1423 - secondary air injection system flow too low Bank 1.
Check vacuum hoses to combi valves ,
most common split air injection pump which is riveted with aluminum rivets,ck rivets if they coming out ,pump doesn't build enough pressure.
In this case take pump out and put bolts instead of rivets all around pump case.Repl. all rivets not only broken one.Bolts sold at HomeDepot , just find a needed size.