[bry]

wondering which tuning device seems best eectuner or tweecer.(or some other device i havent heard of.) my car is 87gt,5 speed,powerdyne 9psi blower, b cam, stock mild ported heads, 91 pcm, 93 cobra maf, 24lb inj. runs 12.8@108mph with factory pcm no chip.

[GTRaptor]

The Tweecer has something EECTuner lacks, multiple programs available at the flip of a switch.
The Tweecer RT version has also a better datalog than the EECtuner.

In terms of what you can tune, both are almost the same.