Yes you would need a tune. If you go with those 2 parts do a front mount intercooler and some larger injectors probably at least 42lbs. Also do some...
The 10% overdrive will make a lot of heat. You will feel an improvement when you nail the throttle which will quickly go away as the ACTs will spike...
1990 Thunderbird Supercoupe 35th anniversary 29,000 miles. Single owner car. This car was garage kept its whole life in a climate-controlled garage....