well I have learned...(should of done to begin with)
but the nozzle placement on a dry shot of N2O is a major factor in the performance you get out of it.
Link below shows the way I had it.

http://www.fquick.com/garages/viewga...ewimg&id=68542

The way I had it, I could run a 125 shot, and it was barely producing around 70HP.. Horrible... I had thought this was an OK spot for the nozzle..NOPE

So now I have the new nozzle placement... and all I have to say is OMFG.
I have the 75 shot in it right now playing around... I have never felt my car feel the way it does with the 75 shot in it.
WOW.....

I spun my tires up so hard last night playing around from 45 - 80... DAM.
So this race season is going to be alot funner then last year, since I have had a season to play with N2O...
This season I will be using the N2O..

 

Be a man and take it to 150 at least!! HAHAH!! JK Congrats!

 

oh I am.. I am actually tuning it for 200 shot of the N2O.
I need new injectors, and an inline fuel system to top off the factory fuel.
42lb injectors.
and the inline that will sustain a 700HP vehicle..Not sure of brand yet..

But I will be moving up this season... I have my tune done.. it just needs a little adjusting... and blam... should be good.... we shall see this season.

 

This is one of the reasons why I just went with a plate conversion. Do you have a wideband on your car? Just interested to see how your A/F ratio reacted.

Good job on the switch. Let us know how the dyno numbers turn out.

 

NO wide band.. have not bought yet... I would like to of seen the a/f also...
I will def. keep you guys updated on what this did for the dyno..

Like I said, before on the dyno, the biggest shot was not even producing 70 HP.....

and my 75 shot in right now, feels like it produces bigger power then my 125 shot did in the old location.....
location... location...location....

 

thats weird...i have my dynotune dry nozzle in the place of your first one and i got 72rwhp out of the 75 shot...

 

that is odd.. Well a little bit from what I learned and why I moved it..
I was not getting the hit I have been expecting from a shot of nitrous..
I had a few buddies tell my right off bat.. Ira move that nozzle, you need it closer to the MAF heat bars so it hits it good and registers good.

I did not move it.. and after doing the whole dyno deal... With my biggest shot I was not getting more then 70 HP that was showing..
I did not try with the 75 shot, but from where they both hit on the lid..
It could be I was getting the same no matter what..

Also 2 weeks ago, with low bottle pressure, when the N2O would shoot out of the nozzle, it was dumping out onto the air sensor that is right there.
And when it was hitting the sensor, my car was completely bogging down.
As if the ECU was turning off and shutting everything down..

I KNOW I KNOW>.. sounds ******* crazy...
my tuning buddy said the same... So he raced over to the house to see what the hell I was doing....

His response after I showed him was WTF... it never did this before...
I was like NO... just started doing this out of no where...
So I dont know if hitting that sensor was causing the issue, or if maybe the sensor was malfunctioning when getting hit with 125 shot of N2O right into it, it was freezing the sensor completely... LOL.. (now that was kind of cool)

So did a little playing around and seen that when I hit the N2O from the other side.. OMFG......

So I changed nozzle placement..... AND DAM...
I have not ever felt this hit the way it does...
75 shot spunn my rears off the ground insane.....

it is def. odd...... but its now fixed.. so I am not going to worry about what was happening.. I am just keeping the stuff far from any sensors.....

 

75 shot you guys need to be in something that hits with a 250+ shot, night and day difference.

 

I am tuning my car for a 200 shot this year..
So from my barely getting 75 to the wheels.. because of nozzle placement..
this coming year I am busting out with a 150 shot, then 200..
So I will get to experience the night and day difference that I know is going to be major.

 

If you had this on the dyno, the charts should show your AFR.
Secondly, it's not that odd. Too many people think that the "same" car should be/run the "same". They don't.
I'm sure if you look at the before/after charts, you'll see the AFR and Injector DC are different. You could have tuned them in, or like you did, play with the nozzle place AND direction.

A little while back I ran another vette. Both of us coupes, both auto, both 3.42. His had a 125 shot, headers, x pipe, and... LS6. Mine, LS1, just a 150 shot (both dry hits). It was a DEAD even run, and he's like 50+ hp over me. He admitted he never had his tuned.

 

the chart showed everything dropped off to nothing...
a/f basically it showed that there was no gas, and no air..
only nitrous going in....

 

i have more than a 75 now...

 

What style nozzle is it? It looks like one of the NOS blue fan style ones. Did you ever check the orientation of the exit inside the lid on your old location. I could see you having distribution problems if it was aimed oddly. Your new location looks like it's spraying just about right on the maf depending on how it's orientated. You should be getting a much richer a/f ratio out of it. That alone could acount for some of what you're fealing if you were having an excessive lean condition before.

 

you got it right. The nozzle was set to spray in the correct spot, but when the bottle pressure gets low, and on a 150 shot, the nozzle was literally just spewing out the nitrous, instead of a fan.
And the spewing was landing right on the air sensor, causing the leaning out problems. The new placement sprays across the MAF great, and actually hits the heat bars perfect. Even with low bottle pressure it is still hitting perfectly across the MAF. As to where before it kind of sucked where it was.