1: is it true that certain dealerships can tune the g35 sedan's engine to crank out the same hp and torque as the coupe? i think its a hoax but i wanted to make sure.
2: does anyone have info on what performance products are available for the sedan from nismo? factory warrantied?

Orvos - 2003.5 Brilliant Silver on Black/Premium/Sports Pckg/Aero Pckg

 

I'd want to know what it is they do to the engine to make that claim.

The coupe's extra power comes from only the intake, exhaust, and more aggressive ECU timings. So with a couple of parts and some programming, it's possible.

2003.5 G35 Sedan Desert Platinum/Graphite Premium/Sport/Aero/Nav/Winter