Nitrous System Installation Complete!
Robert
Edit: Don't feel alone, as I am sorting out and doing some rewiring myself, today.

Four white wires..............now which one is it? In my case, it was the third try of of four. Now you know why I'm not a gambler!
Anyway, I got it working sort of. I tried a 75 shot and it was impressive, but my BMN rpm window switch refuses to work when I turn on the 1st Gear Lockout feature which is the whole reason I bought it! When I have it turned off, it sprays fine. When I turn it on, it not only doesn't spray in 1st Gear, it doesn't spray at all!
I have a 3500 stall torque converter. I have my ON rpm set at 3800 rpm. My shift points are set at 6400 rpm and I have my OFF rpm set at 6000 rpm so the 1st Gear Lockout should be working, but it doesn't seem like it is. I'm not feeling anything when I shift into 2nd and as my ON rpm is 3800 and my tranny, when it shifts at WOT, starts at over 4000 rpm, it should start spraying immediately.
Any ideas?
I don't think this likely, but is it possible I'm just not feeling the 75 shot "kick-in" in 2nd and 3rd gears? Is there anyway to positively know I'm spraying during a WOT run and not have to rely on "seat-of-the-pants" perceptions?
Thanks!

The Best V8 Stories One Small Block at Time
Enjoy the ride and post some new ETs
Enjoy the ride and post some new ETs

Spray between 1050-1000psi.
Test with first gear lockout turned off first.
First gear Lock-Out
The Lock-Out feature is designed for off-road drag racing use only. When the Lock-Out is “on” or “activated”, it will not allow the nitrous to activate until you have went all the way through first gear and reached the turn off rpm limit. The turn off rpm limit must be reached before shifting into second gear or the Nitro Control will not switch into active mode.
Simply put, do not "short-shift" into second gear or no nitrous will spray until you shift into third! This situation can be avoided by selecting a turn off rpm that is 100 to 200 rpm before your shift point. Another way to prevent this is to take advantage of the built in shift light output.
Using a shift light will not only eliminate a short shift into second, it will also make your shifts more consistent and increase your saftey by allowing you to keep your eyes on the track and not your dash.
Once the Nitro Control reads the first to second shift, it will remain active through third, fourth, and fifth gears, etc., (even if short-shifted) until you apply the brakes at the end of your run.
The unit works fine with the 1st Gear Lockout in the OFF position both when testing (green light illuminates and engine revs) and on the street, car pulls hard in all gears.
When I turn the 1st Gear Lockout ON, nothing happens. It's acting like an ON/OFF switch for the whole setup and the system doesn't spray at all during the entire course of a WOT run.
I just got back from testing the system on the road again and I reconfirmed the fact that the system isn't working when the 1st Gear Lockout is ON, but works fine when it's OFF. I first ran a couple of runs with the Lockout ON and nothing happened in any gear, no surge of power whatsoever in 1st, 2nd, or 3rd. I then ran a couple of runs from a 70 mph roll with the Lockout OFF and I immediately felt the car pull hard right up to my rpm cutoff point.
1ScrudeDude: If you'll read my previous post, you'll see that what you copied is not the problem. First, I have an A4 and can't "short-shift" the car at WOT and second, the upper rpm limit is being exceeded by several hundred rpm so that can't possibly be the problem either. I actually lowered my upper rpm limit from 6100 rpm to 6000 and my shift points are set at 6400.
gollum: No, I don't have an interior pressure gauge, but if nitrous pressure were the problem, it shouldn't have anything to do with the position of the 1st Gear Lockout switch. It shouldn't work at all, not just when the 1st Gear Lockout feature is engaged.
BMN: No, no one can see it while driving, but after doing those passes from a 70 mph roll today and feeling the nitrous kick in, I can guarantee that it isn't spraying with the Lockout on.
Last edited by XTrooper; Aug 23, 2005 at 12:14 PM.
Good luck in getting the last bug out!
,though it would be nice if the 1st Gear Lockout feature worked as that's the main reason I went with the BMN as opposed to one of the other brands.

