I have a 1986 dodge daytona turbo..when I crank it up it won't sit and idle.when u give it gas it will sit and rev itself up and down.that's when its almost to the floor..any ideas on what's goin on?

Though I am not a mechanic, what you describe suggests to me that the it might be worth finding some way to check the modules controlling fuel. A quote from this website: http://www.allpar.com/mopar/22t.html "In 1986, fuel injection systems were controlled by a pair of computers, the Logic Module and Power Module; the logic module controlled ignition timing, the air/fuel ratio, emissions control devices, and idle speed, while the power module translated the logic module's demands for air/fuel ratios and timing into signals sent to the fuel injector (altering the length of its pulse) and the distributor."

Another web page of interest: Dodge Daytona maintenance and repairs http://www.allpar.com/model/daytona/performance.html

Honestly it can be a few things, can I ask at what RPM''s does it reach before it down throttles? As the owner of 6 Daytona shelby's, I seen this happen due to the mass airflow sensor or even the coil not being strong enough.