ECU remap or chip or neither?

Hello all, what's the current thinking on this?

Subject vehicle is 2009 3.2 Mitsi Triton auto 140,000 km. Runs fine, but I feel not really getting the full benefit of the 3.2, and a tad thirsty too. I have already turned off EGR with an electronic mod, otherwise it's stock as far as I know.

Am I really going to gain much power/economy by chip or remap? What are the advantages, disadvantages & risks of each option? I've tried researching online but am bamboozled by the numbers and competing claims of the providers. Any real-life advice welcome. cheers

Some of the plug and play chip/ECU's you can get are nothing but a time bomb. There are a couple of good ones but they aren't cheap.
Same goes for a reflash. You need to see a reputable specialist to get it done or you will melt pistons.
I've seen too many trade me or Aliexpress specials that have done serious damage.

Steinbauer are a very good plug and play ECU type

https://www.steinbauer.cc/nz/

My one may have been a lemon, but it lunched the sun gears in trans at 175. Always serviced at the stealer at 10k intervals and never really had heavy towing. Just something to put in the back of your mind