You mentioned smoke at WOT and on boost, which can be a sign of turbo problems. Now that we know you have new 99 spec twins, probably not a culprit

 

ok ive really been looking for my oil pressure sender and i just cant find it. i looked below the oil filter and on the block and i just dont see it. my engine is from a 99 spec jdm FD. some of them had a boost gauge instead of the oil pressure so maybe thats why i dont have one???