deuce_454

is there a way of running a decent hit.. 125-150 shot without having to run a nitrous friendly tune?? i have some ideas if no electronic widget exists to pull timing when the solenoids go hot.. tell me what you think..

1. having a seperate fuelsystem and spraying racefuel with the nitrous?

2. adding a water or meth/water injection system to spray with the nitrous?

3. running a smaller fuel jet with the nitrous, and having a relay in the IAT sensor line that increased resistance (by say.. 75000 ohms), tricking the ECU to add fuel and pull timing...

GM IAT #2320 Temp/Resistance Scaling

Degrees F Degrees C Ohms
-40º -40 100,700
0º -18 25,000
20º -7 13,500
40º 4 7,500
70º 21 3,400
100º 38 1,800
160º 71 450
210º 99 185

Mike@HSW

iTrader: (6)

Have you ever had a tune done? you wont need to pull any timing for that sized shot if your timing hasnt been advanced. And yes, there are several devices that are made just to pull timing. Not sure what you mean about, NOT having a nitrous friendly tune, do you mean your NA tune?

deuce_454

yeah.. sorry, i meant NA optimized tune

evilbeef54

iTrader: (2)

HSW interface will do it for ya and at a great price

1BADAIR

iTrader: (1)

timing tuner

shaolink9

interface F T W looks like ill be buying one soon , all my financial aid is goin into this this damn car lol

Robin L

I just got of the dyno.

I ran an LS2 with LS3 heads. It is a GTO Configured LS2 so it was a 24X engine. I ran the MSD 6010 box with the jumper harness to take control of the ignition map. The intake is a stock L76 and a Holley 90MM Throttle body.

I optimized the NA tune. I use a NOS Mini Controller and it's uses the TPS signal and a built in window switch.
The MSD has a progrmable step retard which I set for 4 degrees. That way I can run my optimized NA tune and then run the Nitrous the way that I want. I can program any amount of retard into the MSD 6010. I run 28 Degrees NA and 24 on the hit.

I also use the negative wire from the controller to kick the neg on the relay that powers the positive side of the solinoids.

Robin

kc533

iTrader: (1)

I currently run a "nitrous friendly" tune. Believe it or not, against a previous run w/ optimized NA tune, I only lost 3hp w/ 4 degrees of timing pulled. I was quite surprised to say the least. Not a bad sacrifice to be on the safe side.

deuce_454

im not sure i want to run the MSD 6010 as i would like to keep the controlls in one box....

but the reason i ask these questions is that im trying to design or atleast lay out what i need for a fire and forget nitrous system.. somthing with an on/arm switch and a purge button..

and all i would have to do was flip the switch and my bottle would open, the window/WOT switch com on and when i hit 3500 rpm at wot it would fire, retard the timing to keep me safe and monitor AF so it would shut down in case of a lean...

Mike@HSW

iTrader: (6)

http://www.harrisspeedworks.com/shop...age=1&featured

http://www.harrisspeedworks.com/shop...age=1&featured

These two would do what you want and then some. If your ready to purchase we are having a 20% off sale that expires at the end of the day today.

Robin L

One box.....good luck with that. The problem is most people can do some things very well. I prefer to not allow any management sytem to control my timing. In the case of the engine that I had on the dyno it was a LS1 PCM tuned with HP Tuners. The 6010 allowed me to optimize my NA tune then let the controller kick the step retard that I programmed in the 6010.

I used the NOS Mini 2 stage controller on the dyno. I use the NOS Launcher controller on my Nova. It has the wide band option so I can shut down should I get too rich

My dyno guy liked our setup. All he had to do was exceed the low rpm activate and hit WOT which also starts the dyno log. He hit 7000 and the controller shut the Nitrous off. That is where I programmed the top of the window.

Good luck!

Robin

deuce_454

great.. guess i saw that a couple of hours too late... anyway, i think ill get the HSW All-Out Nitrous System Accessory Kit when i figure out my switches etc.... do you guys sell spray bars by them selves by any chance???

Doc

iTrader: (9)

While all the other options previously presented are fine choices, reading your original desire for a "push the button" and forget about it all in one system, I would like to point out the custom operating system from EFI Live that does just that. Wire in a double pull, double throw relay to your master arm switch that provides power to your system and ground to pin 56 on the red connector of your stock pcm and blamo- You will have the capability that your are looking for. Just setup the timing retard in the software, plus add fuel.

deuce_454

thats just great i just recieved my HP tuners vcm suite...

Jason Haines @ LPE

Our LNC-002 is designed to provide timing retard (along with a 2-step function). You wire the timing retard activation wire to the nitrous activation/solenoid. You can adjust the amount of timing retard and the rate at which the timing is removed.



The LNC-002 plugs into the factory GM coil packs connectors.

For more details, you can go to the installation instructions here.

Robin L

One box....I stand corrected!

Very nice Jason.


Robin

Jason Haines @ LPE

I realized I didn't respond to the second half of the question/post before.

Regarding the IAT method of timing and fueling, the timing can be controlled by the IAT although you have to be fairly careful and really need calibration software to do it correctly. For example, one thing you can do is set the very high temperature readings to specific timing retard values and then use a switch to disable the IAT and switch over to known resistance values that set the reading to those specific temperatures and retard level.

One of the reasons you have to be careful using IAT as a timing retard tricker is that several tables modify each other so you have a multiplier of IAT retard based on ECT. This might mean below a certain ECT, you don't have any IAT retard no matter what the IAT is. At other ECT values you might only have 50% or 80% of the IAT retard value in the IAT table. You may also have an RPM based modifier (or a table may have two axis).

Using IAT for fueling isn't very useful because the IAT input to fuel is very small. Fueling is better handled in your nitrous system.

Cam72aro

iTrader: (28)

I have a timing tuner and love it.

ShiznityZ28

iTrader: (11)

The lingenfelter box looks like the ticket for stock pcm cars to me! Were going to try one on my cousins car.