what bhp to expect from a remap for my a4 2.5 tdi 163bhp?

Don't buy a decat pipe, break the internals out of existing cats, saves money.
Ive got a 155bhp with a RR print out of 204 BHP.
 
Remove both precat and main cat, clamp in vice 1 at a time, bash the guts until all out, I used a 3 ft lever bar. Easy job.
 
Panel filter, both cats removed and custom remap by Zaviz International. Complete EGR deletion
 
the egr deletion can you buy one or is that a plate you slip in done that to my mondeo, i'll be using torque tronix's there one of the best tuners here in northern Ireland mapped my last motor
 
I removed completely and put blank plates on ex manifold and in manifold and removed vacuum actuator & hoses. And of course mapped out!
Bit fiddly to get to bolts on exhaust mind you, loads of room in the V now.