Before or After?
99 Z28 LS1
Ssra ( super sucker ram air )
Slp lid
Slp catback
Ported tb
If you're talking about taking your car to a tuner or sending your PCM out to have it tuned, then I don't have a great answer. However, as above, there are things that can be done that will help performance so if you have the money you could talk to someone and see what they'd charge. If you explained what you had planned, someone might cut you a deal on a tune now and an updated tune after you made more mods.
Do not buy a "tuner" as in hand held programmer for what you are trying to do. Take the car to be tuned by someone with professional software or start reading now and buy the software to do it yourself (EFI Live or HP Tuners).
If those are absolutely not options, you can get a mail order tune where you send off your PCM and have it tuned and sent back to you, but that will leave both power and drivability on the table compared to a street/dyno tune.




