the1andonlyGR81
Dedicated LVC Member
as many know ive gone through a few motors here lately and am in search of some good info. i have a 98 lsc with a set of comp cams 106100, great idle good power, bad vlcm toasted another motor. when did ford stop using the imrc's? if i put 'c' series head 99-01 tumble port, and the 99-01 cobra intake will my computer work anymore, i mean obviously will need a tune, but can i still use computer? next, if i go to the 5.4 navigator head and cobra intake, same question, and third what about the 03 cobra head same question, basically do i need imrc deletes, or are the heads designed to be used without them and the ecm yes or no. im leaning toward the navigator head and cobra intake