http://www.akmcables.com/ http://www.tunercat.com/tnr_desc/do_tc.html
Data Master (TTS) is another but their help line sucks.
You have an 86 it uses a chip and the 95 has a programable computer the driver can change.
I use data master to moniter the engine and tuner cats or lt1 edit to program the car.
Just make sure you down load your data before you change any of it.
To just see what the engine is doing about $300.00 or so