To NOS or not to NOS your 928

928mac;5206 wrote: No I didn't get a chance as to much is going on and the car is still a while from getting done. I do have a question though.

I wonder if I can use my Tec-gt ECM to control the Nos? i know it can be used to turn it on and off but I wonder if it will pulse the solenoid so that I can set up a progressive ramp?I was thinking of using the NOS 200 shot kit
nitrousdirect.com/wetnitrouskits.html

I do not think it can do it, the NX Progressive controler looks at RPM WOT switch and then you program the % base on RPM. You are dealing w/ two seperate things, you will need the N2O controler, else it will be all or nothing and you do not want that.

I took Gary Knox for a short ride and she put a smile on his face.

N2O-928;5228 wrote: I do not think it can do it, the NX Progressive controler looks at RPM WOT switch and then you program the % base on RPM. You are dealing w/ two seperate things, you will need the N2O controler, else it will be all or nothing and you do not want that.

I took Gary Knox for a short ride and she put a smile on his face.

Ha Ha I bet it did.

Ok so with the controller can you set multiple rpm point percentages like 10% at 2000, 15% at 2500, all the way up to say 75% at 6500 and that way detune the 200HP shot to 75% except for when the WOT switch is tripped ramp to the 200 at 6000?
or dose it not have the ability for multiple maps?

Brad

928mac;5230 wrote: Ha Ha I bet it did.

Ok so with the controller can you set multiple rpm point percentages like 10% at 2000, 15% at 2500, all the way up to say 75% at 6500 and that way detune the 200HP shot to 75% except for when the WOT switch is tripped ramp to the 200 at 6000?
or dose it not have the ability for multiple maps?

Brad

Well almost correct, the WOT signal is a "trigger" with out it the system won't turn on. So you can drive around with the N2O system activated (on) but nothing will happen until the N2O computer see WOT.

Once N2O computer sees the go peddle is “fully” depressed and that is really the only time one would want to spray fuel and N2O in the intake.

The N2O computer looks at the RPM signal and pulses the solenoids at whatever percentage you have set for the RPM the engine is at. (I start at 20% at 2300 RPM and ramp up to 100% by the time I reach 4200 RPM and cut it off at 6000 RPM.

The total HP percentage is based on the jets that you plac in the nozzle, the size of the jets are base on the displacement of the engine, the HP you want (say 150hp), the fuel pressure (for the fuel jet as it is the extra Fuel that creates the HP) the N2O jet is then sized to provide the supporting Ox for the Fuel, there is a chart that come w/ the system for jet sizing.

Dave

Here is a screen shot of the software when I was trying different settings, I think you can down load a copy for free from the Nitrous Express Web site.

Attached files [img]media/attachments/5315=600-WP_000358.jpg[/img]

N2O-928;5315 wrote: Here is a screen shot of the software when I was trying different settings, I think you can down load a copy for free from the Nitrous Express Web site.

Very cool, Thanks. You know I still don't know your name.

Brad

928mac;5230 wrote: Ha Ha I bet it did.

Ok so with the controller can you set multiple rpm point percentages like 10% at 2000, 15% at 2500, all the way up to say 75% at 6500 and that way detune the 200HP shot to 75% except for when the WOT switch is tripped ramp to the 200 at 6000?
or dose it not have the ability for multiple maps?

Brad

928mac;5317 wrote: Very cool, Thanks. You know I still don't know your name.

Brad

Hi Brad it's Dave (aka davek9 on that other site