87 octane tune

[6gear]

I just did and 87 octane tune on my 09 Silvy 5.3 so what all does that include? Does it kill my mph limit or set it to a different number? does it kill any torque management, firm up the shift, change max rpm? add any power?

[mikel]

TM is reduced, timing and fueling are optimized. Adds about 15 rwhp/25 ftlbs

SPeed limiter can be disabled in the adjustable parameters.

[6gear]

So I need to plug my unit back in to disable the speed limiter? Where will I find this setting?

[mikel]

after you select the tune go to modify tune, modify parameters and select rev and speed limits. set the limiter to OFF and press ESC until it asks you if you want to reinstall the tune, choose yes.

[6gear]

THANK YOU

[pelicandivebomb]

how much power is the 87 octane tune supposed to give a 6.0?