would the 91 nitrogen shell gas give more hp

 

Not unless you have a tune for 91 Octane.

 

What if you are tuned for 91 octane, I have Bamachips 91 race tune w/ JLT intake. Would 91 nitrogen gas work better or the same than regular 91?

 

"With Nitrogen Enriched Gasolines, our scientists have increased the effectiveness of our cleaning additive, offering consumers our most advanced technology ever."

Looks like the nitrogen petrol is just to clean carbon deposits, with no horsepower benefits. It can't be proven/disproven until someone volunteers to fill up with nitro-gas and run their car on a dyno.

My opinion? Probably won't help.

 

Dude whatever. This will shave at least 2 tenths off your times.