After spending a year at stage 1, I have decided to take the next step and go to Stage 3. I have an Ahmed Bayjoo Stage 3 chip and I'm currently bidding on a brand new 3 bar map sensor and set of 803s. I only have standard T3 turbo and std intercooler at moment but hopefully around summer, I'll upgrade those 2. I'll be taking my Saph into Harvey Gibbs to have it set up with the above, but what sort of power can I expect? But what I really need to know is, do I need to upgrade anything else? I know I can't run too much boost with the standard T3, so will the head gasket be ok or does that have to be upgraded?

I'd appreciate any advice, cheers!