thanks for the info . i for got to tell that the car has been tunned already with ls1 edit. also i do plan on buying the box for the bw. my question now is why reflash the pcm to a newer model vehicle. also why 85mm maf is that because thats what the ls6 intake manifold uses on the zo6 and if i whent with a lsx intake manifold should i still use the 85mm maf. i dont know if theres any gain going from a ls6 to a lsx. i know i wont need a 90mm manifold. thanks for your help