Looks like my OEM coils are starting to go, Car is breaking up on top,boost pressure drops and AFR goes rich then leans out with accompanying back firing. Car idles fine and runs fine through the mid range. What would be a good replacement option? Car is currently making 386 WHP/365 WTQ on a 2nd gen gtx2867. Is the ACCELL coil any good? Has anyone retrofitted a different coil to the Duratec?