and regarding the VW side of 1.8t tuning. 2000 1.8t's can get 45 from a chip alone, making 195hp. 2001 1.8t's can get 65hp, making 215, and 2002 1.8t's can make 45hp, totalling to 215hp.
a full downpipe/exhaust is usually a 10-15whp increase on top of the chip.