[acmillr]

I just installed a NOS (brand) Noszle system on my Mustang. I am taking it to Dynospeed Friday to have it tuned, but I wanted to make sure everything was working right. However, I was scared of giving my motor more than it could handle without a tune, so I armed my system and engaged it without the nitrous bottle in the car to verify fuel flow. Next, I placed my bottle in the freezer and let it set for a while. After it was good and cold, I put it in the car and hooked it back up. The nitrous gauge was reading ~450 lbs. when I armed the system and went full throttle this time. Everything worked as planned and I experienced no damage (that I know of).
Finally, I have a question from this experience. How much does bottle pressure affect HP?? I know that when I squeezed the trigger last night there was no where near 125HP being put out by the system. I am just wondering if bottle pressure will make that big of a difference.

[Timber]

I'm still on my first bottle so I don't know how low pressure will affect power. But if you go by what everyone says, bottle pressure should be at 900 psi. So when you sprayed you were at exactly half the psi of optimum.

Why did you put it in the freezer?

[acmillr]

Originally Posted by Timber I'm still on my first bottle so I don't know how low pressure will affect power. But if you go by what everyone says, bottle pressure should be at 900 psi. So when you sprayed you were at exactly half the psi of optimum. Why did you put it in the freezer?

I put it in the freezer to lower the output pressure so I wouldn't have to worry about having to much N2O and not enough fuel for the timing I have on my 93 octane tune..........

[Timber]

Ah, I see. That was a good idea.

[HMUSN]

you just answered your own question bro.

why do you think we get bottle warmers?

[acmillr]

Yeah, I know, but I am wondering what kind of HP drop comes with losing bottle pressure.

[acmillr]

BTW John, I am getting an aluminum flywheel and a Spec stage II clutch put in Friday as well.

[HMUSN]

Originally Posted by acmillr Yeah, I know, but I am wondering what kind of HP drop comes with losing bottle pressure.

well if it was at 400psi and should have been at 900psi and you were running 125 shot .. you probably got around a 75 shot instead.

nice... you'll love the clutch... where are you getting it installed?

[acmillr]

Originally Posted by HMUSN Originally Posted by acmillr Yeah, I know, but I am wondering what kind of HP drop comes with losing bottle pressure. well if it was at 400psi and should have been at 900psi and you were running 125 shot .. you probably got around a 75 shot instead.

I can see your logic, but when you factor in the fact that I was also getting about twice as much fuel as I should have been getting, I would think less than that. I guess I'm just worried that nitrous is not going to be all it's cut out to be.

[HMUSN]

haha

you say that now!

get a tune and a bottle warmer and hit the No2 and let the butt dyno tell the difference...

i ran 125 shot for a while... it throws you in your seat... trust me man!

[Timber]

Originally Posted by acmillr Originally Posted by HMUSN Originally Posted by acmillr Yeah, I know, but I am wondering what kind of HP drop comes with losing bottle pressure. well if it was at 400psi and should have been at 900psi and you were running 125 shot .. you probably got around a 75 shot instead. I can see your logic, but when you factor in the fact that I was also getting about twice as much fuel as I should have been getting, I would think less than that. I guess I'm just worried that nitrous is not going to be all it's cut out to be.

I thought about that for a minute and let it go since I'm not sure. I don't think half psi would necessarily equal half a shot. Even so another thing was bothering me. You've got a dyno tune so your timing is jacked up. If you got a ping you didn't hear (possible with your exhaust) but the knock sensor picked it up then it started pulling timing and things went downhill from there. It's exactly like when I finished my install with a tank of 87. It sprayed, but there was no power, just ping.

I know you weren't getting any detectable detonation. I'm just thinking out loud of the possibilities. I put it out of my mind until I could fill up with 93 then all was well. I wouldn't sweat it. I'm sure after Joe gets done with your car you'll be happy with it.

Flywheel and clutch too, eh? If you drive through Montgomery when you move we've got to meet up.

[acmillr]

I'm taking the first week of May off to go find a house in Ft. Pierce and to take some time with the wife. My parents are keeping the girls, so we'll probably take the car. I'll email you with an exact date of when we're going to be there, and I will stop by for a while.

[MeZ]

Look you want to spray at your ideal pressure ... around 900 psi .. you don't want too much pressure .. but you def. don't want too little ..

I never use a bottle warmer cause in NC its usually warm enough when I'm spraying outside I actually have to put the bottle in the shade to get the pressure down ...

Theres no point at spraying at 400 psi .. you're just not being efficient with the gas ...

[Timber]

That'd be awesome, just let me know when you're coming.

[acmillr]

Originally Posted by Timber That'd be awesome, just let me know when you're coming.

Check your e-mail. I had another offer today.

[acmillr]

Originally Posted by MeZ Look you want to spray at your ideal pressure ... around 900 psi .. you don't want too much pressure .. but you def. don't want too little .. I never use a bottle warmer cause in NC its usually warm enough when I'm spraying outside I actually have to put the bottle in the shade to get the pressure down ... Theres no point at spraying at 400 psi .. you're just not being efficient with the gas ...

I intentionally sprayed at 400 psi as a test run only. I think you are missing the point.....

[Timber]

Originally Posted by acmillr Originally Posted by Timber That'd be awesome, just let me know when you're coming. Check your e-mail. I had another offer today.

You're kidding... I knew that guy would come to his senses. I can't use the PM feature here at work (it locks up my internet connection for some reason) and I can't check my home email from work so it'll be this evening before I can read it.

[acmillr]

Originally Posted by Timber Originally Posted by acmillr Originally Posted by Timber That'd be awesome, just let me know when you're coming. Check your e-mail. I had another offer today. You're kidding... I knew that guy would come to his senses. I can't use the PM feature here at work (it locks up my internet connection for some reason) and I can't check my home email from work so it'll be this evening before I can read it.

I'll talk to you tonight.

[Darrell]

Originally Posted by acmillr I just installed a NOS (brand) Noszle system on my Mustang. I am taking it to Dynospeed Friday to have it tuned, but I wanted to make sure everything was working right. However, I was scared of giving my motor more than it could handle without a tune, so I armed my system and engaged it without the nitrous bottle in the car to verify fuel flow. Next, I placed my bottle in the freezer and let it set for a while. After it was good and cold, I put it in the car and hooked it back up. The nitrous gauge was reading ~450 lbs. when I armed the system and went full throttle this time. Everything worked as planned and I experienced no damage (that I know of). Finally, I have a question from this experience. How much does bottle pressure affect HP?? I know that when I squeezed the trigger last night there was no where near 125HP being put out by the system. I am just wondering if bottle pressure will make that big of a difference.

Yes bottle pressure equals horsepower. You need bottle pressure to be between 900 and 1000 psi for optimum performance.

[Darrell]

Originally Posted by acmillr I put it in the freezer to lower the output pressure so I wouldn't have to worry about having to much N2O and not enough fuel for the timing I have on my 93 octane tune..........

It doesn't work that way. You actually make your chances of problems greater buy doing that. Too rich with nitrous can crack and lift the ring lands on the pistons. At such a low power level there isn't much to worry about anyway. You can't do much damage at low power levels........most of the time.