audi a4 b5 modifacation tips

I have a audi a4 tdi se 1999 110bhp.
I was wundering what else I can do to tune up my motor a bit. Iv recently had it chipped up to about 143bhp and iv felt quite a difference in driving especially with how much more responsive the turbo is. Im not sure what else I can do to help tune her up maybe without spending a fortune. Could anybody please help.

get some .216mm injector nozzles that will add a bit more power, and then a front mount intercooler! Grins all round then!

Rich

thank i will have alook into it.

Does anybody know of any sites where I can get .216mm injector nozzles so I can get some prices