First of all i want to thank u/seanwee2000 for helping me with the shunt mod.
Now that that it's done we can talk a bit more about the specs, it's a Lenovo legion Y540 15-IRH laptop it was produced in 2019 so it's not that new but still work pretty well (at least good enough for now as i want to change soon) .
Concerning the pure hardware it's packed with an Intel I5 9300H (4C/8T) (undervolted to -0.150mV), an Nvidia GTX 1660Ti mobile (OC/UV 1920mHz at 0.875V and shunt moded to around 90W or so as the VRM's isn't that beefy enough to safely allow more), 2x8GB of RAM (Crucial 2660mHz) and some thermal mods like having PTM7950 on both CPU and GPU, completely changed all thermal pads for some Arctic TP-3 thermal pads and (on the last image) put the old VRAM's pads on the heatsink so that some heat can be transferred to the plastic chassis even if plastic have a really poor thermal transfert it help quite a bis as it offer a better thermal mass and add a source of dissipation.
As of all internet its the only score i can find of a shunt moded GTX 1660Ti, i have never seen someone does it and posted about it.
As for the resistance used i know it's not the right size but i was the only one available when i did my mod that had th right value.
Thanks for seeing my post, have a happy overclocking session folks