What modifications do you need to do to before installing a twin turbo in a Nissan 350z?

Answer 1

You would need supporting mods for the increase in power. first thing would be fuel control. you would need some kind of air/fuel ratio controller during different rpms. obviously there will need to be an increase in fuel entering the motor under boost

Second, you would need some monitoring equipment to make sure your motor doesn't blow up.

Gauges:

Boost (self explanatory)

Wide band- use Oxygen sensor's voltage reading to determine your AFR(to see if your running too lean or too rich during different rpm ranges)

EGT (exhaust gas temp- for best monitoring you would actually need two gauges. one for each bank, or one for each side of the motor.)

you also some way to monitor knock in the motor with some sort of logger.

you might also need a LSD in the rear end if you don't have one.

Your best bet would be to join a good 350z forum. That is only some of the things you would need, just to give you an idea. there will be tons of information on there as well as people who have done the conversion and can give you advice.

Good Luck. There is nothing like Twin T's