Just a question for those that know. I installed a Ford 70 mm TB from a 5.4, it is NOT FRPP. There is a little more power and the exhaust tone changed (very cool) but the RPM's "hang" for several seconds at about 1,200 rpm's before it goes to 800. It is a little annoying. Will a dyno-tune cure this or is this permanent? I'm tempted just to get a real FRPP 70 mm TB. I guess this is a cheap experiment. Thanks.