Alright, I had a revelation last night when i realized that i could throw a nitrous kit on my car for significantly less then a set of wheels or that new hood i was looking at. So here come the question.

First off the engine is an lo3. and i'd prolly only be running a 75 shot till i really got the hang of it, and if i was feeling real ambitious i might increase, but never over 125. The system in question is the NOS PowerFogger "Universal Wet EFI".

Costs, I know there are hidden costs with everything, what extra will i need with this? summit has the kit listed at $530. how much is it to refill a bottle? I'm assuming i'll need a new fuel pump. and prolly some of those safety switches mr. dude was talking about in another post. but anything else? fuel lines or anything like that?

plumbing. I'm pretty sure this is a system that you have to drill holes in the intake manifold and then mount the 'nozzles' in there that way, how many nozzles are there (8?) and is this really that difficult? or is it just drill and tap?

timing: not sure if this needs to be adjusted too much, i was reading in another post somone with a 305tbi having to re-advance his engine back to 6* (what mines at now) b/c he was running lean. Have otherpeople had to retard the crap outta their TBI nitrous setups? if thats the case what in car ignition adjuster should i invest in?

finally, just for ****s and giggles, what have other people run on a nitroused tbi? just curious, i did a search and was still unclear on the things i listed.

I think thats it for now, i'm sure i'll think of more questions later, but this should get me started. Thanks in advance

-chillen

 

A fogger might be a bit overkill for a 75 shot. You could run a plate for that.

For my fuel system, I converted to braided line, and put a junction in there, that runs the fuel to the noid.

Timing, I have run mine with full timing, at 100, for 125 I retarted it 3* via the chip, for WOT, if its not wide open, it still gets full timing, that keeps it nicely drivable.

 

see heres the thing, when i get outta college i plan on building/buying a much better engine then the lo3, something capeable of safely running a much higher shot of nitrous. And seeing as this isnt much more than a plate system (correct me if im wrong) i figured might as well do the fogger, it'll be a good learning experience figureing out how to hook it all up and plumb the manifold, and when i get my new engine i can just switch it over. So yea, i agree with you on the overkill thing for a 75 shot, but i'm thinking into the future more then i let on in the first post.

Now heres something else i'm really not to sure about. Alright, the nozzle injectors mix the fuel and nitrous and inject it right into the intake runners on the intake manifold. The solinoids are what "pump" (for the lack of a better word) the nitrous and fuel into the nozzles. The nitrous obviousally comes from the bottle, but where is this fuel comming from? Do you just split the fuel line going to the injectors and run one end to the solinoid and one to the injectors? or is there a whole second line comming from the fuel tank? I'm thinking the first solution. And dewey, I'm assuming you're running a aftermarket fuel pump b/c ive seen a few other of your mods (single plane for ex.) do you think the aftermarket fuel pump is necessary for the nitrous, or can i just do that after the nitrous when i come accross the extra money? thanks for your help.

-chillen

 

The fuel pump, aftermarket is always recomended. I tested my fuel pressure, and wide open, with the fuel noid going (basicly, I ran the car like I was using the nitrous, but had the bottle closed. This way I didn't risk going lean, but was able to verify that I would have enough fuel to feed both the injectors and the nitrous.

As for plumbing, I got rid of the stock rubber lines, I went straight from the chassis lines, to the TB with -6AN braided line. On the fee line, I put a T junction in, and ran another line from there to the fuel noid.

 

how much of that wont come with the kit? did yours come with line to run from the junction to the solinoids? or come with the junction? just trying to add up all the hidden costs. thanks so far, you've been a big help

-chillen

 

It probably depends on the kit, you likely won't have line from the fuel to the noids. The fogger kit will probably have mulltiple noids for fuel, so you will need to take that into account.

depending on exactly how you do, i would plan anywhere from $100 - $300 in plumbing. It is easy to star making a really nice fuel layup, and the number of fittings starts to go up, and so does the cost. Mine for example, got a FP guage port, that added to the cost, along with using 90* elbows off the fuel lines, that again added, also getting the metric/an and NPT/an adaptors so I wasn't hacking things up, added up. You are really going to need to find out what comes in the kit you are planning, and go from there, you may end up needing things like a micro-switch, and misc electornics. You will also need to get a blow-down tube. You might also want a window switch, or FP saftey switch, etc.

The goodies in doing a nitrous kit the ideal way, starts to add. I would not be suprised to see it climb to close to the $1k, by the time you get all the saftey stuff, plumbing, fuel-pump, etc.

 

well, seems like the kit ive been looking at only has 1 nozzle, not quite sure how that works, but i'm pretty sure its not what i want. heres a pic of it below, its called the NOS powerfogger universal wet efi kit, or something like that.

looks like the kit i'm looking for is the sportsman fogger system.

dewey could you list your before and after times? and the mods you had when you got those time? just curious.

-chillen

 

i haven't been to the dyno or track with it yet. I am supposed to be up on a dyno on saturday, to get some AFR readings, I'll hit the juice once, to get numbers for you.

I can tell you, I was slowly inching away from a car that went 13.01@109 with a traction issue. That was with a 100 shot. I am not holding out hope for a 12sec run from this with only a 100 shot.

I never really got good times from my motor NA, by the time I got the cam an intake in for good (swaped back to stock while trying to pass emmisions), The best I ever did was 15.1 @ 94, but on that run, i had a bad miss, and was shifting at 3800 RPM, I would imagin NA it is a low 14sec car.

 

thanks, i'd love to see those numbers, you've been a huge help.

-chillen