How to get more boost...

No way. Not enough airflow to allow the jet engine to do more than idle, even that would be pushing it.

No way you'd get this kind of flame from an engine that's sitting ar idle and no way it's road legal.
 
Interesting ..............Andy you will see my brother in-laws Audi round your parts?.....he drives a S3 Silver outside the Hilton on GW road
 
^ Ha ha, that's just around the corner. I'm a block away. Not a road I often walk down, I'll make a point to now though.
 
He walks to work all the time as it is not worth his while to drive it...there only gets to go out in it in the weekends (shame)