Hi everyone, I am new to the mustangs and I just recently purchased a 98 cobra with 83000 mi. I just had a basic tune up done with plugs, O2 sensors etc. I have a problem with my IMRC, according to the dealer techs one is bad and needs to be replaced. they are trying to charge me over $800 in labor and parts! any advice on my dillema? maybe changing out to a new high performance intake manifold, or maybe getting rid of my imrc motor , put aluminum welds and tune?