I dont think there are any solderless modchips mate, the only way I know of to play imports/backups without a chip is to use Action Replay, an original game with a big file size and a knife/credit card to manually open the disc draw, its quite dodgy and if you get it wrong you can really mess up your PS2, that is why I stopped doing it and got a none swap disc modchip installed, cost me about £90 last christmas and has worked perfectly ever since.
naah they are emulated 110% now
here is me with tekken3 on epsxe (see pic) with all settings on high (anti alias, texture smoothing etc)
some games do need to have settings changed from time to time but either way both are now emulated better than the original system themselves. they still havent solved the wobbly backgrounds though
running this at 200fps is crazy lol but still playing better than the ps1 itself
I was recommending the site for the PS2 modchip, not the xbox modchip as I dont see any point in getting a modchip for the xbox when it can be exploited to run imports/backups without even having to open up the case.