Tuning for a Jimny

Hello together, I bought myself a Jimny about half a year ago. As far as I can remember, it is the 86 hp variant of the petrol engine. The other cars in the family are diesel and have around 160-200hp. That’s why I think the Jimny is a little undermotorized. I bought with the Jimny to be able to drive with it through the terrain. But I like the car so much that I now travel with it every day. But the big question is now: What can you do with it? the little bit more power? If I have seen it right, there is the option “Supercharger”. So you could double the power for a price of approx. 3-5,000 EUR. I find it a bit happy now. Then there is the option “Chiptuning”. Once as a classic tuning with fixed characteristic lines in the control unit. Cost approx. 500€ Then as a component between control unit and injection nozzles for 200€ Then any gas pedal tuning for 100€ And any OBD plug for 200€, the anblbl I should also change the engine characteristic or reprogram the control unit. kA, the company GAN offers something like this. Have you had experience? What really works?