roller cam,smidgen higher compression with sequential injection & maf...195i had slightly better airbox or snorkel & steel headers to go with 195i tune.
Was it better to stock vt 304...little bit better but for the extra money it cost really didn't set the world on fire however they did have much nicer manners down low due to roller cam & sequential injection.
Are you running complete vs s3 ecu or vt ecu setup as in sequential injection,maf set up? Bolt on mods?
If it's to get it running with vs s3 or vt ecu getting vats off is fine....if you're running roller cam engine but with vr or vs ecu etc that is map based hen yeah I'd prefer memcal tune to suit what is in there.
Ride says vr commodore yet engine roller cam s3 or vt...so what ecu/loom & transmission combination mates it all together?