What type of cold air intake do you have? I have a 1989 jetta 1.6td I am always looking for more hp, I have done the 2.5 downpipe and full exhaust getting a giles pump then will put my boost controller on turn up the boost to 20psi. I have an egt guage and boost guage. Does your shop have a web site?
Trev0rbr with only a half turn above stock fueling i feel safe (my tires don't)
A pyro is only $150. I work for a diesel performance company and I sell a pyro like an insurance policy.
1300 Pre turbo is about all you want to go with. This usually equates to about 1000deg post turbo. That is starting to get pretty hot. I wouldnt want to be there all day long, but shorter runs at that temp you are going to be ok.