#109486, "RE: turbo advice needed" In response to In response to 2
On my phone now so I will reply with more information later.
.50 compressor means nothing. You need to understand how to match airflow of a compressor to produce the desired HP level. Read Garrett's site and search this section for a post regarding compressor maps.
Again saying ".50" means nothing at all. Read and do the math for airflow and fuel requirements to obtain 500+ bhp.