383LQ4SS

iTrader: (33)

This is a good video of a car we (myself and Rev Xtreme) did a while back. Its mild 408 with a dry first stage and a NX direct port second stage. It made 787 rwhp in these vids going very rich. When it was sorted out it made 868 rwhp. It has the first gen NX/FJO mini controller. You can see the grapghs a little bit in the vid.

Also in the vid is a VERY good shot of a large dry kit being sprayed under a clear lid. It will give some of you guys an idea how narrow a strem of nitrous can be and how pointing it directly at the MAF could cause problems. If it were pointed just so you could get 50% or more by the MAF in a narrow path and hardly register causing a lean condition. Others have pointed the stream DIRECTLY at the wires and casued a rich condition. I like to recomend as much mixing as possible before it goes through the MAF.

The last shot of the all dry was about a 250 dry shot and made around 730 rwhp all dry.

http://video.ls1tech.com/player.aspx...E-8FE265C0B855

PAGregSS

iTrader: (10)

That's definitely a good point about the dry shot.

Can you give any more details on the 408? What were the specs on the motor alone that made it mild?

NXRICKY

iTrader: (1)

Nice.
Ricky

NXJeremy

Good vid, great numbers for a "mild" engine.

383LQ4SS

iTrader: (33)

it was a basic build with decnt heads and like a 238/244 cam. It made just over 500 rwhp on motor on an NA tune. On the nitrous tune it made about 485. It was semi docile with the cutouts closed and was perfectly steeetable.So that why it was "mild".

BadAssFast

iTrader: (2)

Thank you for the informative post and video. I was real interested in watching the spray collide in the middle of the lid...that seems to balance the spray from side to side. Cool.
Macon

bad6as

iTrader: (17)

hum, now that makes me was the halo, or a dual nozzle dry kit over the singel nozzle dry kit. to me it mixes with the air more evenley

NHRAMAN

iTrader: (1)

Good video,great shot of the nitrous in the lid.....

WS6HUMMER

iTrader: (19)

Nice vid!

s.o.m.SS

iTrader: (1)

good video, but a bad *** car... sick numbers and that dry shot is bad ***

Robert56

iTrader: (2)

God I love those dry hits. Great video Al, I saved a copy. This is why I have been telling guys to have their dual nozzles pointing at each other, to create a sort of "null" area to mix well with incoming air for a great maf reading, now I can show them. A very good way to make a point. Thanks, and great tuning and numbers there.
Robert

383LQ4SS

iTrader: (33)

Keep in mind that dry shot was pretty big. You can get away with a single nozzle dry with smaller shots like a 150...or even more..as long as its pointed correctly.

Nitro Daves Halo really is the best though. I used to use a home made version of that and nothing will be more consistant as far as dry.

Also yoyu can see the Nitrous Outlet stand alone fuel system in the battery tray feeding the direct port.

Robert56

iTrader: (2)

True, sort of. I am talking dual nozzle straight shots. We have been trying a lot of locations on the vettes and from what I have found, even on small hits (which produce the same narrow type pattern you show), aiming to middle of air box and streams meeting result in best over all maf reading. Dry placement really is a tuning thing, and guys that are rich or lean often have there nozzles aimed or located incorrectly. If going single nozzle straight shot, the best way would be to use the new NX straight shooter, as it really fans the spray pattern out. Good for the truck guys aiming from the bottom of cone filters directly towards maf.
Robert

383LQ4SS

iTrader: (33)

The only reason I say that about something like tha Halo is that no matter what happens...if it shifts due to bumps or motor toqueing over...it will mix well prior to the MAF.

If someone has a kind of half assed nozzle setup that is not secured properly that relies on being aimed precisely.... that kind of scares me. Of course precautions can be taken to ensure the setup is secure and I have installed a bunch of single and dual nozzle setups and I have no problem with that. Just that a spray bar or halo really CANNOT be made to spray past the MAF. Its just a small step towards safety.

Robert56

iTrader: (2)

Agreed. My point is/was, with so many aftermarket airboxes and straight nozzles that aren't fan style, and fan nozzles at 90* some get placement mixed up. So, a good understanding of a dry set-up when going outside the manufactures suggested location on nozzles is needed. I have seen straight nozzle locations that have froze filter and blasted holes into it. The Halo is trick in it's own right for sure, no issue there.
Robert

383LQ4SS

iTrader: (33)

yep...if you know what your doing its not too hard to setup a good dry...even single nozzle. I just worry when guys are AIMING them and twisting them to get the AF to go from 15 to 1 to 12.5 to one...lol. And a nudge one way or the other has a big impact on Af.

purple98haz28

iTrader: (5)

where do you recomend a fan noxxle point then to be safest. mine pionts forward. my thinking is it couldn't freeze the maf and the engine sucking in the air would put it in the right place

383LQ4SS

iTrader: (33)

If FWD is working for you then you are good to go.I dont like to point it FWD because its going aginst the regular flow path of intake air. But i have never really seen any negative results that were substantial. With the airlids on the Fbodies its a little easier. The vette guys have it a little tougher.

LS1Queen

iTrader: (1)

I saw that car at rev extreme when mine was being tunned VERY nice set up

red fury

iTrader: (1)

nice video, I have been waiting to put my car back on the dyno just to film it as the N20 kicks in. I have the same setup......minus the DP and built 408 LOL!!