[19gtp98]

Well i have a 98 gtp with the 3.4, custom air, ported headers, high flow cat and exhaust, screen removed, and at one point the reprogrmamed chip. One day i was running it hard and at high speed service engine appeared took it to my mechanic fried spark plugs 3 and 5 he said my chip most likely leaned it out removed chip, pu tin new plugs, same thing 3rd cylinder fried plug so we checked the fuel system changed the filter clean injectors, and then 3rd time was a charm 3 and 5 piston popped the crack iin the top right hand side of the piston, went all out got a full warranted long block installed and started it drove it down the block and then bang again the plug melted what would cause this lean condition it would not be the missing screen at the maf? now i have a tap that sounds like it comes from the fuel rails, any tips out there??