PewterZ

The NX kit I have has a switch that amrs the system and a switch that detects wide open throttle. So I just come out of the hole on motor and at the top of first my foot is on the floor and the Wide open throttle switch is engaged then I arm the system and let her real in the track <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> ...I kinda do it backwards.

WeatherGuy

See my post in the drivetrain section on the 200-4R. This transmission is good for spraying through the shifts (on a 422), and carries a decent warranty.

FLC6

iTrader: (3)

SOME ONE PLEASE ANSWER THIS QUESTION ABOVE.

Robert56

iTrader: (2)

It'll be on anywhere/anytime it's in the window of operation. When shifting look at the tach and see how low the rpms drop while going from one gear to another then set window slightly below. Or, you can set your shift points higher with a tuner program.

FLC6

iTrader: (3)

But then my N20 would only spray from about 4500 to 6200. That is not what I want.

From what you said, it looks like the N20 will come back on as the car is shifting. I wonder if a TPS switch would take care of that problem since it (I hope) would recognize that the car is not at full throttle during the shift.

Comments?

Robert56

iTrader: (2)

I'm not sure what your getting at, but set your window sw to what ever rpm on off you want. Where do you get on/off 4500/6200. Set it for on 3500 and off 5800 if you like?

FLC6

iTrader: (3)

You know I have an automatic right?

OK,

Here is the scenario.

Lets say I have my Switch set from 3000 to 6300 rpms.

My car shifts at 6400rpms.

After the car shifts the tach is at 4500 rpms.

The N20 will shut off at 6300 but will it come back on the second the rpms are lower than 6300? Won't the car still be in mid shift ?(auto)

NVME88GT

Yup. If you don't want it to come on during the shift, you need to set the lower window variable to a value higher than whatever RPM your engine falls to after the shift.

Robert56

iTrader: (2)

Someone correct me if I am wrong. Once the shift is done yes you'll be at a lower rpm, just like a stick. Watch your tach and you'll see where and how long the shift is. Most guys I believe are using the 5600, 5700, 5800rpm area for off, then when shift is complete because now your in a higher gear the rpms drop.

2001 Red Coupe Bandit

This is my questions exactly. And i still haven't got an answer, but now we are getting close. Here is my thread:

https://ls1tech.com/forums/nitrous-oxide/345623-nitrous-100-shot-my-yank-ss4000-help-needed.html

In my Case with my (A4) and my YANK SS4000 Torque Converter
(I did Testing today in the car) my shift points are set to shift at 6,500, then the car ONLY Drops DOWN to 5,200 RPM's Immediately after it shifts (due to the higher shift extentions from my TC) .

If I am using a WIndow Switch, and my TuRN ON Lower RPM limit is set to anything 5,200 or below, it is going to immediately go on as soon as the car shifts and drops to in my case, 5,200 RPM's.

My quesiton also, is this SAFE? Do I want to set mine even higher than my 5,200 shift extention, say 5,300?? If that is the case, then I would be spraying from Only 5,300 to about 6,400. That is only 1100 RPM's of Spray.

I was also looking at the BMN Window switch (especially for me with my Big Stall) which has a 1st Gear Lockout feature, so it will not spray nitrous ANYTIME you are in 1st Gear.

The first time would spray is when your car hits 2nd gear and is at the lower Turn ON RPM Limit you set on your BMN Window Switch and then every gear after that.

To SUM IT UP

Is is it OK to spray at the RPM RANGE that your car drops to immediately after a shift in an automatic? ie. your "Shift Extention", or should you do it higher than that RPM Range?

Anyone else know?

MakoLS1

Your not realy suppose to but I sprayed a 150 shot though mine for about 2 years with no transmission problems. I knew it was on borrowed time so i ended up getting a th400 but the 4l60e never actually broke.

Race Car Driver

I bring the spray in at 3000 and off at 6400 and shift at 6600, but my Rossler will take the abuse.

2001 Red Coupe Bandit

Thanks, What is your SHIFT EXTENTIONS? Likley more than 3,000, right so does the Nitorus Kick on As soon as your car shifts and drops to the RPM of yoru shift extention?

Thanks

We still need to know this same senario with a weak stock tranny

AnthonyConstant

So i shouldnt just press my n20 button when im at full throttle, i should let off when i think its about to shift on my automatic?

FLC6

iTrader: (3)

I think it is almost like spraying through a shift. The second the RPMS drop below the cut off rpm even if the shift is not complete the Nitrous will kick in. Not so good on the tranny.

Will a TPS switch prevent this?

Robert56

iTrader: (2)

You guys watch your tach. don't just say it's this rpm after the shift, but where's it at during shift, that's the area you want to avoid. I used to spray through my stock tranny and it held up (small shot 125hp). You cab also program tranny for quicker shifts. The only reason it takes as long as it does is for comfort. But, this extended slipping for comfort causes undo wear/tear and can get bad fast on the juice. Get a shift kit and/or programing.

usd2sing

iTrader: (15)

great thread gang.

FLC6

iTrader: (3)

I have an LS2. Do you think the 5177 kit will work as described for the LS1? Will the prescribed 100 shot for the LS1 we 100 shot for the LS2?

Does it change since my engine is a 6 litter and 400hp?
Is NOS going to make a kit for the C6? If so, I wonder what would be different than the 5177 kit.

mrr23

iTrader: (3)

i've always sprayed through the shifts. wife's trans is still all stock on a 175. mine (200) has been built because i burned up 2nd doing 2nd gear start dyno runs. it's just one of those hit/miss things.

GM Muscle

iTrader: (9)

Even with your "ON" set below your shift extension, the nitrous will still hit after the shift, not mid shift (that's what the real question is right?). You will clearly feel it. The shift happens so fast the nitrous really doesn't have time to kick in mid shift. However, I have found that shutting off 100rpm before the shift is alittle to late, the car feels like it is spraying into the shift. I shut off 200 rpm before the shift. I'm still on my stock tranny and it has seen alot of nitrous over the past few years. I thought I lost it last year but it was just a tuning mistake.