I have a 99 gt. Mods include bbk CAI, BBK 75mm TB, C&L Plenum, BBK LTH, 10 1/2's in the back and 9's up front. Do I need to get it tuned? Will the gain be worth the money? How much of a gain should I expect? Thanks in advance.

 

You will find a little "lost" power but it will probably not justify the cost of a tuner. I just bought one and have less mods than you but I need it to fix my speedo after my gear install. If you plan to do gears I would just get one as it is nice to have vs. a speed cal that you can use for only one purpose.

 

you will also get some by the 93 octane tune

 

+1 failed to mention that specifically