NOS is also a coolant and perfect to use to cool down air and at the same time making more HP.
Depending on the use one ideal way to use it on low revs on full throttle to make power all the way until the turbos " take over".
one usually say that 25 hp nos makes an extra 10-15 hp because the intake air cools down so much that you can push more air in to the motor
As for choosing the turbo/turbos you can go single or stay twin dependning what kind of power you want and were you want it
twins cost more (hehe). And just because you can not find any info on twin seqs does not mean its impossible
