new item I just ordered from Australia

[GoFast88]

http://www.autospeed.co.nz/cms/article.html?&A=0217

[Rob]

thats cool, to bad its just a narrow band sensor it uses.. but anything to help watch the A/F ratio is a bonus

[GoFast88]

With the nos "engaged" it will give me a good indication if she's lean and "gonna blow". At least that is the plan

[2ML67]

On a non fuel injected car this would be very useful, on injected computer controlled cars its strictly for observation but with NOS running lean is very bad so it wouldn't hurt to know whats going on. Dan

[Slammed Fiero]

NOS is a brand , Nitrous is what you are spraying. How big a shot are you running?  I have an Autometer PRo comp AF gauge and find it annoying if anything. There's nothing you can really do with it to tune the car. I know Shaun is running 190 or so @ the wheels on his juiced 2.8 and doesn't have one. Just a well setup system and lots of Dyno time. When I ran Nitrous on my 2.8 I found I was too busy shifting to look @ the gauge.

Make sure you back the timing off , get a good nitrous filter (toss the little one)  and perfect your mico switch before you go hving fun.

The reason why my 2.8 Blew @ 60,000kms was too much timing , same as Mike LeCompte.(Hyptnotize) Shaun ran 15-20 bottles through his old 85 GT auto (75 shot) on the original engine and last I heard it was still going strong by it's new owner up in northern Flordia

JM
If You don't have a Northstar , you are not cool.

[2ML67]

Brian's car is powered by a 3800SC so timing changes are a little difficult. Its also an auto so shifting isn't that much of a problem. He just wants to be able to monitor incase of a lean situation. Dan

[GoFast88]

with NOS

Running Pontiac Buick NOS and Nitrous OXIDE
Duelly noted.
Might be a little conservative with a 50 shot in my 3.8 when you were running 75 shot in your 2.8
 I am looking for 375 hp or so
 

[Slammed Fiero]

Depends on what kinda kit you use.. Dry is good (from what I have been told ) to 100hp , then you really need a wet kit. The System I am putting on the Northstar is worth around $1500 , it's NOS's Nozzle kit that sandwhiches a nozzle between the intake manifold and the injector. It sprays a cone of nitrous and fuel  kind of like a halo around the stock injectors patter. Very hard hitting nitrous setup and easy to conceal since it uses all flexible lines. The closer The nitrous to the  combustion chamber the more efficient the setup

[aaron88]

I wouldn't use a dry system over 20% shot.  Too much chance to go lean.
20% shot = 20 hp shot for 100 hp engine, or 50 shot for 250 hp engine.

injectors will not likely compensate for more than 15 to 20% of the programed pulse width.


Aaron

[Slammed Fiero]

Rule of thumb  is 1/2 the engine output is safe. althou Travis Hall (1FST2M6) ran a 125 WET shot on a 2.8 auto and went a documented High 12!

There is a guy in Northern flordia running a 100 shot on a bone stock Auto Northstar to the tune of 11.9!! off the bottleit's doing 13 flat.

[GoFast88]

I am starting with a 50 shot ahead of the blower and will see how it does. Probably more potential with the 3.8 but must tread slowly. (ya right)!

[Joe Fieroshop]

From what I have experianced over the years is, if you are staying under 50 shot, you can keep you base timing. if you go higher, every 25 shot extra you should retard timing 2 deg. So lets say you and 100 shot, then you retard 6 deg. The way I found this to be possible is by using a MSD Digital 6 box for those who are running a stock Fiero motor with distributor. You can program the box to retard timming with a flick of a switch. Same goes for those who have a DIS engine, but you will have to use a DIS 4 to make this happen.
By having the MSD box you are able to still run your factory timing when you are not using the NOS. When your ready to play, you arm the NOS and the MSD at the same time. I really perfer the WET system over the dry, the wet is more tunable, but yes the dry is more safe. I also have found that the stock injectors are good, but it would be good to go a couple of lbs/hr size bigger.

my 2 cents.

Joe