[auto99gt]

In the process of planning either a rebuild of my stock block or purchasing a built short block, with heads, cams.

I have been tossing around the idea of doing a nitrous setup. I have read that certain kits are good only for 125shot. While others are good 300+. I read one thread !bout fuel pooling in the intake when the nozzle is mounted high in the intake. And that direct port, while more expensive and complicated, is more efficient and no risk of blowing the intake up. U can also tune each cylinder.

Has anyone ran the direct port? What all upgrades are required? (Additional fuel pumps, lines, regulators, etc)
Difficulty is not a factor, not trying to rush install.

[MikeJones]

Originally Posted by auto99gt In the process of planning either a rebuild of my stock block or purchasing a built short block, with heads, cams. I have been tossing around the idea of doing a nitrous setup. I have read that certain kits are good only for 125shot. While others are good 300+. I read one thread !bout fuel pooling in the intake when the nozzle is mounted high in the intake. And that direct port, while more expensive and complicated, is more efficient and no risk of blowing the intake up. U can also tune each cylinder. Has anyone ran the direct port? What all upgrades are required? (Additional fuel pumps, lines, regulators, etc) Difficulty is not a factor, not trying to rush install.

NOS does a direct port kit. Check it out. Wet ki yo wont need any type pf fuel upgrade.

[04N20GT]

Here is what I know about it.

The pooling you are talking about mainly occurs when you are running a nozzle in the intake tube and trying to run too big of a shot. Too big of a shot sometimes will not let the fuel mixture to properly atomize and it collects together or "pools" in little nooks and crannies in the intake manifold.

A plate system is good to about a 200 shot. The bar is a little more efficient at distributing the mixture. That would sit under your plenum on top of the manifold.

Direct port is when you need to run really big shots 200+. Yes you can tune each cylider with it. Being more efficient comes from having positive contol over exactly how much fuel and nitrous is injected into each one. With the nozzle or plate the mixture is running to the some cylinders before other and it would be impossible to get the same amount in each one at the same time.

As far as set up, this is where I am not an expert by any means. I know you need one solenoid per cylinder to deliver the mixture. You would need to tap each cylinder of the intake manifold, and depending on which fuel rails and pumps you already have or plan to run, you will need a stand alone system dedicated to the direct port system. If you already have bigger rails and beefed up pumps, then you might be able to get away with tapping them. But when you are talking running a 300shot I would just get a stand alone fuel system.

[auto99gt]

I have yet to beef up any of the fuel system. I don't want to start in one path and find out later i need to change it.

[auto99gt]

So a Stand alone fuel system is basically a complete fuel supply dedicated for the nitrous injection?

[04N20GT]

Well if you are planning on running anything over 125shot you will need to upgrade you fuel system, along with just about every other part of your driveline for that matter. What are your power goals and shot size you are looking for? I would not worry about doing direct port unless it is a serious drag car and looking for big nitrous shots

[04N20GT]

Originally Posted by auto99gt So a Stand alone fuel system is basically a complete fuel supply dedicated for the nitrous injection?

You got it

[auto99gt]

My goals are to break the 325hp mark n/a. I want hit easily hit 475hp with nitrous, but with ability to knock on 525s door.
I am definitely going to build the complete drive line, no matter what.
I guess I want to know if direct port is the way to g now, with upgraded fuel system and such, so that when i want run big shots I can. Basically So I don't waste time and money on a kit that will only allow 125 shot, and later I want to do 250-300.

[auto99gt]

My goals are to break the 325hp mark n/a. I want hit easily hit 475hp with nitrous, but with ability to knock on 525s door.
I am definitely going to build the complete drive line, no matter what.
I guess I want to know if direct port is the way to g now, with upgraded fuel system and such, so that when i want run big shots I can. Basically So I don't waste time and money on a kit that will only allow 125 shot, and later I want to do 250-300.

[04N20GT]

For the power levels you are wanting I would not bother with a direct port. It would be cool, but I think it would be over kill.

If u want 325whp N/A then you are going to need good heads and cams with a full exhaust. Bump the compression and it is that much easier plus compression and nitrous go hand and hand. Decide on what intake manifold you are goin to with first and then make your selection of nozzle, plate, or direct port. I would have stuck with my Nitrous express plate but when I switched to the trick flow Mani I could not use it so i had to go to a nozzle. If you can get in the 325-350whp range a 150shot will put you over 500whp.

You have got to remember that nitrous is not a one for one. You will likely see 1.5-1.8 whp per 1shot of nitrous especially running higher compression.

[auto99gt]

So with higher compression the nitrous is greater than 1 to 1?
I've heard people get numbers far below what the shot was. Ex.150 shot actually got 130.

[04N20GT]

With that being said, make sure you run jets that are rated at the wheels. Not all jets are created equal. I use nitrous express and they are rated at the wheel. NOS and ZEX I know have been rated at the flywheel in the past bit I don't know about now. No matter what brand you decide on do your research and call the company and ask questions for your best satisfaction.

[04N20GT]

Originally Posted by auto99gt So with higher compression the nitrous is greater than 1 to 1? I've heard people get numbers far below what the shot was. Ex.150 shot actually got 130.

That is where the jet rating comes into play. They probably did have 150 hp at the crank but only 130 at the wheels

[auto99gt]

Good info. I'll get everything planned out and contact the manufactur to work out the details.

[04N20GT]

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[04N20GT]

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[04N20GT]

I hope this has all helped you. I would search around on here or google different things and it will pull up from all different forums about nitrous combos and such. Hell if you read my mods you would be on the right track or Atleast a start for what you are looking for.

I went with a higher compression, stroker, TFS heads, stage 3 cam, and a wet kit. I have played with a 100shot on this setup and I'm very pleased, but I am waiting to get it on a dyno before putting the 150shot on it. I think my numbers right now N/A are around 350+whp. Add in a 100-150shot and I'm looking between 475-550whp range.

[auto99gt]

And I am running an auto trans. That shouldnt matter to much, should it? I know I lose power with an auto, but should be no problems running nitrous?

[SWEET2KSTANG]

when you look at the nitrous kit ratings, more entry level kits are limited by the solenoid size rather than the nozzle. then you have to take into account the rest of the air induction system on these cars because of the poor flowing heads. the puddling comes from different reasons, and that is explained in the nitrous sticky. shot size is also explained there as well. direct port is nice, but over kill if you arent going over 200.