Converting to return fuel system? (turbo)

overlord

Hi everyone,

I just traded my roomate for his Twin Turbo 370z (I'm sure many of you are familiar with the car, silver with GTM turbo kit and nismo s-tune ground effects) Anyways...

The car fuel cuts hard, especially when cornering, unless you have over a half of a tank. Also, sometimes it seems to bog even in a straight line depending on the manner you give it throttle.

I would like to do a return fuel system with a real FPR with vacuum reference line attached. I dont feel comfortable running ~460hp on a returnless fuel system and I would also like to add a surge tank to help with the sloshing.

If I convert to a return system, will the car need to be re-tuned? I am assuming that because the stock FPR does not have any manifold pressure/vacuum reference, that by adding this in I will need to tune the ECU accordingly.

Any advice is greatly appreciated.