N2o Project from 2008

[ajxtcman]

I installed a wet system on a friends car a few years back and I will share how we did it up.





NX MAF nitrous system for any single piece GM MAF vehicle. This includes 2000 to 2005 Northstars, 03' Camaro and Firebird and all 99' and up GM Pickups. The NX integrated solenoid nitrous system for the GM Single piece MAF is the state of the art in safe horsepower production. Compact, easy to install, machined from billet 6061 aluminum, integral lifetime warranty solenoids, complete plug and play wiring harness, TPAS module, and all necessary hardware for a complete installation. Fits all GM one piece MAF applications. 35-200 Horsepower

[ajxtcman]

Protection


Zt-2 Wideband Controller and Datalogging System
Cut your tuning time in half!
Includes the Zt-2 Wideband Air/Fuel Ratio Meter, Wideband Oxygen Sensor, Sensor Harness, Signal Harness, PC Serial Cable, Datalogging Software, Installation Instructions and 2 pin EGT connector to retrofit your EGT probe. Made in the USA.


Exhaust Gas Temperature Probe
Low mass, fast responsive EGT Probe.
You can use some other slow EGT probe but will it tell you the EGTs are raising before you melt the engine parts?
Includes 8' EGT probe extension harness to the Zt-2. 1/8 NPT thread.
Please note special K grade thermocouple extension wire is used. Made in the USA.



ZAVT-1
Zeitronix Audio-Visual Warning and Trigger Box.

Loud 95dB audio buzzer with a bright red LED and a relay trigger signals the alarm.

APPLICATIONS

• AFR too rich The alarm activates when too rich mixture is detected.
  
  
• AFR too lean The alarm activates when too lean mixture is detected.
  
  
• A combination of AFR too rich and AFR too lean alarms can be used to tune for a specific AFR window.
  
  
• EGT too high The alarm activates when EGT exceeds a safe user selected level.
  
  
• RPM too high Shift-light functionality with a bonus of audio alarm and a relay trigger.
  
  
• TPS too high The alarm activates when TPS exceeds a selected level.
  
  
• USER1 Input too high The alarm activated if a sensor connected to the USER1 input exceeds a selected level.
  
  
• USER1 Input too low The alarm activated if a sensor connected to the USER1 input is lower than a selected level.
  
  
• Relay trigger Open or close a relay circuit to activate or deactivate additional devices at a set warning level. Typically used to add a control to your boost setting, nitrous or alcohol injection and other devices capable of engine destruction.
  

[ajxtcman]

The start


The billet plate


The end cut off



Ground off all of the tabs and bumps



Assembled

[ajxtcman]

]:hmm:
I was thinking about this from the start even before you mentioned this. This system is made for an LS1 and it has the same type of intake. :duck: I have my fingers crossed. We will see.

I had a conversation with a friend about WOT and sucking up the oil in the bottom of the intake. Just think of oil the in the bottom of the intake and when you suck it up on WOT you could get a blue/black smoke cloud. :hmm: Yeah that means that you might not be cleaning carbon, just the oil out of the intake.

Hydro-lock anyone? Now I plan on spraying fuel into it:nono:

[ajxtcman]

New pics

MAF installed


Air Box


Mess of wires


Switches



The all important Tank 1 of 2 (they are both full)

[ajxtcman]

So far I have about 20+ hours into it. Lot of work and planning. I think I had about 4 or 5 hours into just talking to Bert about it. Well talking Bert into dropping all this cash I should say.

You can talk someone into dropping their pants and bending over. If they aren't happy in the end it is no good.
Bert is already happy and he hasn't pushed the bottom yet. He is 100% confident in all the protection I have installed. I think the total dollar amount of the protection is getting close to the total of the N2O kit :histeric:

The N2O will only be applied at WOT, in 2nd and 3rd gears, with AFR no leaner that 12.8 to 1, and the EGT not over 850° C.
I may run that EGT a little cooler :hmm:

[ajxtcman]

[ajxtcman]

We started out with a 275 hp 3.11 geared DHS.
The car ran a 16.1 stock. Then with some work and tuning I got it down to 14.6

It's already tuned. (Thanx AJ) Don't need to retard timing, and right now it's blowing 125 shot, and I'm going to the track as soon as it doesn't rain on a weekend. They are calling for rain this weekend maybe they'll be wrong, again. Already on second bottle!!!

[ajxtcman]

Then we put new switches in it

[ajxtcman]

I called Wester's and he was on the other line, so I had to play the email tag game. I asked him what I should have the EGT limit set at. He replied with a not so good answer and a lead in question. He said that it depends on the location of the sensor. Yeah! I replied that I was running 790° C without the N2O. He replied 1100° to 1200° will be safe. I have the EGT limit set at 800° or 850° and this is turning off the N2O. :duck: I want to be on the safe side. I am going to bump it to 1000° today. I am going to set a Lean limit of 12.6 to 1. This is a complex setting.

The Wideband module has the following inputs that can be installed.

• RPM
  
• Boost/Map Sensor
  
• TPS
  
• User 5V
  

The Alarm/Trigger box can turn the N2O off if the following occur.

• AFR too rich - The alarm activates when too rich mixture is detected.
  
• AFR too lean - The alarm activates when too lean mixture is detected.
  
• EGT too high - The alarm activates when EGT exceeds a safe user selected level.
  
• RPM too high - Shift-light functionality with a bonus of audio alarm and a relay trigger.
  
• TPS too high - The alarm activates when TPS exceeds a selected level.
  
• USER1 Input too high - The alarm activated if a sensor connected to the USER1 input exceeds a selected level.
  
• USER1 Input too low - The alarm activated if a sensor connected to the USER1 input is lower than a selected level
  

I have the EGT handled, but I need a Lean setting and maybe a rich setting.
This is my plan for the lean setting for the 12.6 to 1
I plan on hooking up the USER 1 input to the N2O Solenoid 12V feed wire. I need to install a 11000 resistor in line. This gives me 5V on that wire.
The reason I need 2 inputs is because is you are cruising at 14.7 to 1 the Alarm will be going off. I only want the 12.6 to in affect with the N2O on.

We were playing around the other night. We had shut the bottle off and decide to show off the ability to smoke the tires. it was great until all the extra fuel about killed the engine. :histeric:
I was thinking I need a rich limit. We would use this if the bottle goes dry. No need to wash out a set of plugs.
I was thinking 10 to 1 with the N2O on for a rich limit.

This would give me an EGT limit, Rich limit, and a Lean limit :hmm: can't think of any thing else I need

[ajxtcman]

We got a Bottle heater to get the N2O pressure up
We have seen 812°C EGT without Nitrous.
Wester's told me I could run 1200°C with no problem. This is related to the placement of the EGT. The Alarm Box setting won't go over 1000°C. At 1000° we will be safe.

The lean setting is 12.6 with the Nitrous. This setting is a "Complex Setting" The alarm would be going off all the time because under normal conditions we are 14.7 to 1. I hooked up an input so that I get 5V on a input wire when the Nitrous in on.
I have a Complex setting of Leaner than 12.6 and the 5V Nitrous input. New problem. Lean spike. Then the alarm shut off the Nitrous and the car starts to Jerk Off.

The General sent us some cool tools to monitor Fuel Pressure in the last few years. We got a Digital Fuel Pressure Gauge. This has a Min/Max recording option (Similar to a Fluke DMM). The other tool is high dollar and I have not used it to monitor fuel pressure yet.
I am going to hook the Digital Gauge up to the Northstar with N2O and see how much it drops when we make a run without N2O. I may see a tip in drop, but I hope it shoots way up and never tappers off. Then I plan to make a few runs with the N2O. We enable the N2O only after shifting into 2nd and we have been WOT for a few seconds. If we get a drop in fuel pressure when the N2O engages or it tappers down I am going to install a BIG fuel pump.

Something as basic as fuel pressure/volume that can not be checked with a needle gauge because of the duration of the condition.

[ajxtcman]

Pretty cool data-logging software

Initial Lean spike on a Closed throttle to WOT from a dead stop (17.1)


The system goes a little lean on the 1-2 shift (13.6)


This is the Lean Spike form the Nitrous jet opening (13.1)


This is the Rich peak with the Nitrous on. (10.3) The bottle may have been getting weak

[ajxtcman]

The heater made the system go lean. I put a larger fuel jet in and turned up the fuel pressure 10%, but it still goes lean. I plan on dropping the fuel pressure 5% and making so more runs. The heater really helped getting consistent runs.

Jet Calculator

[ajxtcman]

[ajxtcman]

Snap Shot: N2O vs NO N2O


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80mph in 10.079 and 1.576 faster than it was when we ran a 14.7 1/4 mile without N2O

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102mph in 15.243 on N2O vs 92mph in 15.379 on motor :sneaky: That would be a 10 mph increase and .136 second quicker.

[ajxtcman]

I love it!!! I know it's not track slips, but the differences off the info off of the data logs and tech2, w/ n.o.s. and without are astounding, obviously it's a whole different animal on the go-go juice. We'll get her down to the track soon, just been so crazy lately, but will get it down to show off a amazing time slip soon to come.:thumbsup:

[ajxtcman]

The System has been going lean for a few weeks and we have not run it at the track for that reason.

I Called Craig @ Nitrous Express and he told me that the rubber on the Fuel Solenoid Plunger could be swelling up. He asked me to check the color of the rubber and call him back. I removed the plunger and the seal looked fine to me. I called he back and told him it was tan in color. He asked me if the rubber was flush with the stainless steel. I replied No it is not. Hmm
The fuel swelled up the seal and has been making my lean condition. Craig sent me out a special replacement Fuel Solenoid.

[ajxtcman]

We are finally heading to the track.

We have had a few problems that developed after having the system on the car for a few weeks.
#1 the car was going lean after the Bottle heater was installed.:eek:
#2 Rain rain and more rain.
#3 My schedule

The lean condition may have been caused by a plunger in the fuel solenoid. The original plunger had a tan rubber insert in the end of it. The fuel in our area caused the rubber portion to swell out past the end of the metal portion. I was informed that the plunger travels about .030 of an inch and the rubber was out about .015". The new plunger NX sent me had a black rubber material and it is actually recesses in the metal portion

[ajxtcman]

So between AJ's schedule my schedule all the damn rain and the usual little problems that go along when trying to make a non V series N* fast we have not gotten down to the track yet. We will, but we are dealing with a few items that keep tripping the controller and shutting off the nitrous. So we have had some problems with gas eating up the fuel solenoid, NX was great sent out a re-designed replacement right away. That was an obvious problem, now fixed.

We still go lean sometimes, not always, just sometimes, and the controller does it's job shutting off the juice, and saving the motor. We are going to put in new plugs that are one range colder gapped smaller and pull the (I don't remember the jet #'s so you'll have to deal with this) 125hp nitrous jet in favor of a 100 nitrous jet but leave the 150hp fuel jet in it. If that solves the lean condition permanently, we then will probably upgrade the fuel pump, figure out a way to ramp up the fuel pressure from 49 to 55psi without locking up the injectors, throw in a 150hp nitrous jet and a 200hp fuel jet and see how the PCM likes those changes.

The goal is to get it running worry free first and then bumping the jets to the 150-200hp, but I plan on getting to the track Wednesday (barring another T-storm) but will probably only be pushing a 100 shot of juice and roughly the 150hp fuel jet. Right now we are running the 125hp nitrous jet and a 150hp fuel jet and ever since the bottle heater it sometimes goes lean, sometimes it runs like a raped ape, I mean really really flies!!!

Just have to get her more consistent before I can go out looking for a race. I can't have the controller shutting off the nitrous when I'm trying to run a mustang. LOL

[ajxtcman]

This must be stock.:lies:

RPM----Spark---Air Fuel Ratio (:1)
666 ----- 10 ----- 14.7
1924 ---- 19 ----- 12.8
3276 ---- 18 ----- 12.8
3357 ---- 18 ----- 12.8
4120 ---- 18 ----- 12.8
5246 ---- 21 ----- 12.8
6358 ---- -4 ----- 12.7
4615 ----- 6 ----- 12.8
4948 ----- 8 ----- 12.8
5304 ---- 13 ----- 12.8
5680 ---- 17 ----- 12.8
6038 ---- 18 ----- 12.8
6316 ---- 19 ----- 10.5
5455 ----- 7 ----- 10.5
4683 ----- 8 ----- 10.5
4800 ----- 9 ----- 10.5
4923 ---- 11 ----- 10.5
5053 ---- 11 ----- 10.5
5161 ---- 11 ----- 10.5
5275 ---- 11 ----- 10.5
5079 ---- 25 ----- 14.7
3299 ---- 22 ----- 14.7
3057 ---- 21 ----- 14.7
2936 ---- 21 ----- 14.7

[ajxtcman]

I installed a shorter gap plug (.040) and one range cooler. That seemed to help with the lean condition. I installed a non platinum plug just to test them. I will need to install some platinum plugs for a LS1. That comes out as the same heat range as stock and the .040 gap.

This is the new plugs one range colder and gapped to .040
This is 79 frames/ticks to complete the run. the IAT reading was 80 deg
This had NO N2O



This is spraying N2O
This was 10 minutes after the first run
This was 40 frames. Yes 1/2 of the top
This had less Knock Retard

[ajxtcman]

Hey guy's This is how fast this car is!
Both of these are framed out at 80 frames. They are ran up to 102 and 103, so about the same mph.

Maybe I need to work on the Data Collection rate and recording length, but it fly's. I am using some new software and I need to figure it out

NO N2O (the total recording length is 140 frames)



N2O RUN (the total recording length is 81 frames)

[ajxtcman]

We actually ran the place we get N2O out of N2O.
I bet we ran over 25 10lbs bottles through it already

[ajxtcman]

Yeah we had traction problem. I Think the first run he hit 105 and I think a 14.9, but spun out of the hole.

So I let Highline play on a few more runs and then installed the 200hp jets. he had a 14.8. hmmmmmmmm WTF
I checked the bottle temp and PSI. I sent him out again and he hit 14.2. we ran out of gas That makes sense on the 13.8 on 200 hp jets vs 13.9 on 125 jets. He did not have any safety cut out problems

[ajxtcman]

No No No, 1st run was 13.959 @ 102.52, we did have traction problems. What was weird was that it was bad out of the hole (off the nitrous) also. I was flipping the switch in first after 4,000 rpm's and spinning the tires again, shifting at 6700 and spinning the tires again, which kinda surprised me (at the track), but then again, it didn't.

On the second run I tried to "feather" it out of the hole, to avoid tire spin, and did, until engagement, again. So not as much tire spin but it still hurt, and ran a 14.087 @ 101.99mph.

3rd run was the best but still traction limited, this time we lowered the front tires to 18psi and did a big smoky burn out. Still spun/wheel hopped of the line and spun again after the initial engagement of nitrous, and again on the shift, but ran a 13.883 @ 105.46. Then we were basically out of juice because of the purging/jet change and runs, but we didn't know it until after the jet change and on the next run figured it out 1/2 way down the track, that timeslip, a 14.2 @ 99.1 confirmed it.

(On a total side note: Have any of you ever been to a track where they didn't sell nitrous? Or is that common? It was annoying.)

Well reached 2 out of the 3 goals. 1) To break into the 13's. 2) Break 100mph. 3) Bust a 13.5 or better. 2 for 3 ain't bad, it's baseball season.

Here's #'s of her best run w/o nitrous, which was actually at the Midwest Cadillac Meet earlier this year, and then today's best run with the gas.

60' 2.259--------- 2.270
330 6.252--------- 6.164
1/8 9.509--------- 9.171
MPH 75.9---------- 82.9
1000 12.296-------- 11.737
1/4 14.659-------- 13.883
MPH 95.23--------- 105.46

She's got more in her, on a nicer day, on a nicer track, with less gas and more nitrous!

I'll keep you guys posted, next time I'm bringing both bottles, and maybe some slicks!

Oh, and she ran great, both on the juice and on the way there and home. We've run it allot just could never get to the track, I'm going back Friday, but it's supposed to rain, surprise.

[ajxtcman]

Jets we have
0.019
0.023
0.027
0.031
0.033
0.035
0.039
0.041
0.052
0.057
0.062
0.093

[ajxtcman]

Just an update gentlemen. Running the 150 shot jets on the street, having way to much fun until the bottle runs empty.:crybaby:

We've run at least 20 bottles through it, got it down to the track once, and I've been driving allot lately. And have had no real problems since getting her dialed in on these jets. The filter got plugged up once, but since then, well... lets just say I've been having lots of fun. It truly is the most fun you can have with a bottle.:thumbsup: I have had NO ill effects, still a wonderful daily driver!!!

We are currently working on slicks and possibly a LSD before we get to the track again, but we'll get down there again. We'll run big jets and we will bust into the 12's this summer, period. It has become the mission of my summer. I'll keep you all updated.:yup:

[ajxtcman]

Did a little more fine tuning on this.
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Well It didn't make it any faster, but it looks good

[ajxtcman]

]The last time at the track we ran 20 lbs of Nitrous through the engine at this setting!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!



The car is still driven almost daily.

The DHS Nitrous has been sidelined for the Mustang project

[ajxtcman]

From back in 2009
Highline has his time slips.
it has been a year now, but I think they were in the 13.6 or 13.8 area