when its WOT the car doesnt shoot lean at 4k. only when your slowly accelerating then the car will hit lean. Spark plugs and wires have been changed in the last 30 days.Also changed the fuel filter as well. my fuel system is 255 Fp and 720cc INJ. and like i said earlier ,the car feels the same whether its on high boost or low boost. and its extremely sluggish between 1-3k. still trying to spot out the problem here. spent quite a bit of money thinking its this or that and i got nowhere.