what mods for a stage 1 remap and possibly stage 2?

Jun 27, 2021
13
4
I have a 2.0TDI Leon 2007 140bhp. It currently has a decat delete and cobra twin back box and a PD150 hybrid turbo. Dpf is still in place, no other mods done. Looking at a stage 1 remap, possibly stage 2 depending what needs to be done.
What needs doing first for stage 1 and then stage 2?
Based in West Midlands so any recommendations for a decent remapper would be appreciated 👍🏻
 
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