if u talk to any engine builder they will tell u that u gain 7 hp with ever 100 u make on gas when going to alky.i learned that when i was 14

and yeah n2o and alky isn't a great mix.u gain from the alky but lose in the n2o so its like almost breaking even but less then where u were..if i remeber correct most people lose like 2-5 thou..not sure though i aint looked into it in like 2 years but thats what it was i'm sure its probley still the same.