Nitrous on a 5.4
Post Fiend
Joined: May 2006
Posts: 10,007
Likes: 4
From: Central Florida
I think NX recommends no more than 20hp per cylinder with a wet kit. I wouldn't go more than a 120 shot, wet. Dry probably more like 50hp.
Depending on how you want to use it, there are several additions that make kits very nice. If you are going to use it for several second passes, a bottle heater or blanket should be used. As gas is released from pressure the cylinder cools and the gas becomes more dense and you end up loosing pressure faster.
Purge solenoid, to blow moisture/debris from the lines before runs. Remote bottle opener, for when you want show off with having to get out and open the bottle. Blow off vent tube, Arm switch, throttle position switch, fuel pressure safety switch, air/fuel ratio guage. That's all I can remember.
Depending on how you want to use it, there are several additions that make kits very nice. If you are going to use it for several second passes, a bottle heater or blanket should be used. As gas is released from pressure the cylinder cools and the gas becomes more dense and you end up loosing pressure faster.
Purge solenoid, to blow moisture/debris from the lines before runs. Remote bottle opener, for when you want show off with having to get out and open the bottle. Blow off vent tube, Arm switch, throttle position switch, fuel pressure safety switch, air/fuel ratio guage. That's all I can remember.
New User
Joined: Nov 2004
Posts: 24
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100hp shot would be all that I go with....those motors have cast pistons and it wouldn't take much to damage them if you encounter detonation....
Make sure to use 93 octane gas and do some kind of tune to it for the nitrous (ie... make sure if you already have a programmer on it to take it out because too much timing advance will also be bad!)
Let us know how it turns out!
Make sure to use 93 octane gas and do some kind of tune to it for the nitrous (ie... make sure if you already have a programmer on it to take it out because too much timing advance will also be bad!)
Let us know how it turns out!
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New User
Joined: Mar 2007
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The nitrous has turned out awesome! Im running around a 110 hp shot. Theres a local rd that a bunch of cars meet on to race and i lined up with one of the new eclipse spyders. By the end of the 1/4 mile i was a solid 4 cars head. I believe nitrous is addicting..
Post Fiend
Joined: May 2006
Posts: 10,007
Likes: 4
From: Central Florida
Glad your enjoying it. At 110, your 10lbs bottle is lasting you about 9.5secs, right? Are you ready to add more bottles or get a 20lbs?
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Posting Guru
Joined: Apr 2007
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From: Lockport, NY
Originally Posted by F150 Boss 86
The nitrous has turned out awesome! Im running around a 110 hp shot. Theres a local rd that a bunch of cars meet on to race and i lined up with one of the new eclipse spyders. By the end of the 1/4 mile i was a solid 4 cars head. I believe nitrous is addicting..
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Post Fiend
Joined: Jan 2007
Posts: 18,157
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From: Stanton DE
Originally Posted by ReAX
Glad your enjoying it. At 110, your 10lbs bottle is lasting you about 9.5secs, right? Are you ready to add more bottles or get a 20lbs?
Post Fiend
Joined: May 2006
Posts: 10,007
Likes: 4
From: Central Florida
Not really, Kits are usually designed around the engine and not the vehicle. I prefer Nitrous Express http://www.nitrousexpress.com/Pages/Fordmain.htm
Senior User
Joined: Mar 2007
Posts: 307
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From: Livonia, MI
i was looking at setting up a wet kit but was wondering, would there be a milage limit to when you should put a nitrous kit on? i have about 80,000 on the 5.4L. Inquiring minds would like to know!
Post Fiend
Joined: May 2006
Posts: 10,007
Likes: 4
From: Central Florida
Not really, as long as you don't have oil coming out of the oil fill cap, it should be fine.
Nitrous is a very different animal than boost. Nitrous is a form of boost, however, it take engine heat to separate the oxygen out of the nitrous oxide. Your PCM isn't measuring the volume of N02 going into the cylinders, so you must compensate with fuel outside of the PCM. Boost from a supercharger or Turbo is metered and the PCM can meter the air coming in.
Nitrous is a very different animal than boost. Nitrous is a form of boost, however, it take engine heat to separate the oxygen out of the nitrous oxide. Your PCM isn't measuring the volume of N02 going into the cylinders, so you must compensate with fuel outside of the PCM. Boost from a supercharger or Turbo is metered and the PCM can meter the air coming in.
Post Fiend
Joined: Jan 2004
Posts: 5,377
Likes: 2
From: Elkhart IN
One big thing with nitrous on new fuel injected motors is the rev limiter. Either make sure you never hit it, or set up a cut off for the no2 because if you hit the rev limiter, it cuts off the fuel, and no2 without fuel is bad..........
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