By the looks of your picture, U have stock exhaust.
IMO, think about fitting 3" exhaust sys (muffler / CAT) and while doing that remove the nuts that hold the EGR pipe flange up against exhaust manifold and fit a solid blanking plate and also do other end at the inlet manifold (then leave broken pipe in place). This mod (blocking EGR) is a good option and is part of the NADS installation that is beneficial for the engine performance and life. Part of the upgrade (NADS), U need a scan tool so to clear trouble codes as you will possible get a fault code P0401 - means that the engine computer has detected that the Exhaust Gas Recirculation (EGR) system flow is insufficient (resulting from blocking EGR assy). A scan tool is required and is a very useful diagnostic tool.
With larger exhaust sys and blocking EGR assy, consider installing "manual boost control" Dawes or Tillix and a needle valve. These mods will provide an improved run and controlled max boost @ say 16-16.5 psi and your EGTs will improve(reduce).
For boost management you need a boost gauge or say an UtraGauge (scan tool) that can provide boost measurement up to 22.3psi (would be adequate for stock engine or even for a ECU remap running boost of 22psi.
Suggest installing a Catch Can (ie: ProVent 200).
Gauges: Need EGT and Boost gauges. For the EGT gauge, the exhaust sys require to be fitted with a pyro probe and most provide this option.
The result would be good, something to think about.
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