if this is the wrong section feel free to move it.

Well guys after searching for quite a while now i think ive found a car that i want. it seems perfect. its an 02 thats got a basic 3.4 setup and looks really clean. my only concern is the guy has a zzp pcm in it. now i know zzps tunes are notorious for running lean, the guy says it is a bit lean and it throws a code every once in a while.

My question is.. is there a sure fire way to test if the engine is damaged, without pulling it all apart? im mostly woried about a chipped piston, but im sure there are other things that can result from running too lean.

im going to look at it tommorow, all input will be greatly appreciated. TIA