Holley and FAST both sell speed density systems that will work with the modular engine and have specific Coyote harness converters to run these engines. The 5.4 FAQ talks about the a 5.4 DOHC swap. Their bundle saves time, money, and headache when wiring up your ride. ", but had I noticed that someone resurrected a two year old thread with a "gee, what's going on with this project" question my post would have been far more entertaining. There are so many conflicting opinions Do I get the 5.4 2v? This wire can be run behind the splash shield on a Mustang to protect it. An accelerator pedal that uses a potentiometer to identify the position of the pedal is matched to the throttle control. The following are brief synopses of the Ford computer systems: The EEC-IV computer was installed on the earliest modular engines in full-size Ford cars. The Fora platform includes forum software by XenForo. Manage Preferences - The throttle-by-wire systems include this servo motor thats attached to the throttle body to move the throttle plate. Some sell pre-programmed tunes based on experience, but specific tunes are generally left to the experts. I'd just wait for a 2v block or get the 3v motor and use 2v internals and heads on it. They didn't come that way as a regular production option. Currently, the best choice for operating the Coyote engine and later engines with VCT is the Ford Performance Control Pack. This one is tucked up under the dash of a 1952 truck. As more gadgets continued to consume computer resources, the computer needed to evolve. There are low profile aftermarket aluminum manifolds for . The PCM won't be able to tell the difference between the old and new. (A friend test drove a newer Mustang GT and while he was cruising at 95 mph and backup system threw a minor code. That's the cam phasing + 6 speed auto.