Hptuners for the 3.8 and lt1s have their own editing software. I'm not sure what it's called. But u can datalog and see how the engines running and modify parameters .
96 Pontiac Firebird Y87-3.8 v6 bored .030 over with forged speed pro pistons, ARH cam, P and P heads , double timing chain , comp cam oe-r racing lifters, comp 125lb springs,titanium retainers, comp hi-tech pushrods, ported upper and lower intakes, slp lid,SSRA, pacesetter headers, TSP rumbler cat back, pcmforless tune.built 4l60e with corvette servo, shift kit and Carbon band, 3000 stall, 373 posi rear. 50hp dry shot... for now