View Poll Results: Use N2O with RX-8?
Use N2O, it's fine
83
56.85%
Dont use N20
63
43.15%
Voters: 146. You may not vote on this poll
Nitrous Info/Questions
My Goodness My Guinness
Joined: Aug 2005
Posts: 547
Likes: 0
From: The OC, Maryland
Originally Posted by Charles R. Hill
Read the several threads I have hosted for the past two years on the issue of nitrous and the RX-8. You'll find that it works great, is a fraction of the cost of a turbo kit, and that the Renesis can handle much more abuse than previous versions of the rotary. BTW, there is no major distribution problem, if any, between the front and rear rotor housings if the nozzle is properly installed. I have tutored several people from this club on installing their own kits and you can ask them if I know about that which I write. I am also designing a direct-port conversion kit as we speak that will allow higher levels of nitrous use and more exact distribution of nitrous so as to allay any concerns some might have. Additionally, my own mildly modded 8 with nitrous routinely beats stock STis, Evo8s, Cobra Mustangs, GTOs, and runs easy low 13's on stock tires with a 55 h.p. wet shot. This coming spring will see a new PCM and a 125-150 shot with my direct-port kit.
CRH
CRH
i love you! now i'm sold on it i may have some ???? for you when i start i'm gettin gan incredible deal on a kit from a friend, i'm getting NOS tank, brackets, nozzles(dry setup but will change) guage, purge kit, nitrous guage blow down tube, remote opener, tank warmer and blanket for 500 bux all slightly used and all NOS brand i think its a good deal u?
04 Silver GT
Joined: Jan 2005
Posts: 111
Likes: 0
From: Alberta Canada
Aeromotive Fuel Flow modifier for returnless fuel systems..Marketed by Jegs for 99-03 mustang use...I went to Aeromotive website and they claim it will work with all returnless systems..Charles will this benefit all of us using or considering the use of nitrous...You had mentioned somewhere else that fuel lean was a problem with the higher 65 plus jets..Or was it timing???
04 Silver GT
Joined: Jan 2005
Posts: 111
Likes: 0
From: Alberta Canada
http://www.aeromotiveinc.com/pdetail.php?prod=32 Check out for more info...
Registered User
Joined: Dec 2005
Posts: 61
Likes: 0
I recently installed a Nitrous Express wetkit and have some fine tuning to do. I have a couple of questions for you all regarding nitrous setup:
1) What pressure do you have your bottle at? What is the optimum pressure?
2) Did you replace your spark plugs? If so, what kind/model did you use?
3) What intake are you using?
4) Does anyone have pictures of their intake with the shark nozzle?
5) If anyone is using a nitrous express kit, what is the number of your jets you are using for a 50 shot? (ex. 31/20?)
Thanks guys for all your help!
1) What pressure do you have your bottle at? What is the optimum pressure?
2) Did you replace your spark plugs? If so, what kind/model did you use?
3) What intake are you using?
4) Does anyone have pictures of their intake with the shark nozzle?
5) If anyone is using a nitrous express kit, what is the number of your jets you are using for a 50 shot? (ex. 31/20?)
Thanks guys for all your help!
Mazda Mole
Joined: Aug 2003
Posts: 498
Likes: 0
From: Cincinnati, OH
Charles,
Were you able to develop a single button system that will switch the Fuel/Ignition so to accomodate a higher shot size (100 to 150Hp?) It's been a while since I read the nitrous threads.
Were you able to develop a single button system that will switch the Fuel/Ignition so to accomodate a higher shot size (100 to 150Hp?) It's been a while since I read the nitrous threads.
Mazda Mole
Joined: Aug 2003
Posts: 498
Likes: 0
From: Cincinnati, OH
Charles,
Have you seen the Maximizer 2 from NX. It looks pretty cool.
NX Maximizer 2
Wondering if it will work with the 8. Guess it's time for an email enquiry.
Have you seen the Maximizer 2 from NX. It looks pretty cool.
Dual Stage independent output channels (independent profiles for each channel)
·Time-based ramped delivery of nitrous and fuel (unique programmable delay and ramp times for up to 8 gears)
·RPM-based delivery of nitrous and fuel (unique programmable curve for up to 8 gears)
·Throttle-based modifier of nitrous and fuel (reduce nitrous delivery by up to 35% based on throttle position)
·LEAN threshold automatic “cut-off ” when using FJO Wideband system
·Programmable RPM trigger point and cutoff
·Programmable MAP cutoff (when using nitrous as an "anti-lag" system)
·Nitrous pressure sensor input
·Built-in MAP sensor reads from vacuum to 48 psi of boost
·Gear detection for manual and automatic transmissions
·Inputs for arming switch, bottle heater enable switch, 2 trigger switches, throttle position, tach signal, nitrous pressure, and Air/Fuel Ratio (narrow or wideband)
·2 configurable outputs for either: integrated bottle heater control, integrated bottle opener control, automatic N2O purge function, or status LED
·2 ignition retard outputs
·Digital communication port for PC or digital gauges
·Easy to use graphic set-up menus and datalogging using Windows™-based PC
·High current 2-channel solenoid driver
·Time-based ramped delivery of nitrous and fuel (unique programmable delay and ramp times for up to 8 gears)
·RPM-based delivery of nitrous and fuel (unique programmable curve for up to 8 gears)
·Throttle-based modifier of nitrous and fuel (reduce nitrous delivery by up to 35% based on throttle position)
·LEAN threshold automatic “cut-off ” when using FJO Wideband system
·Programmable RPM trigger point and cutoff
·Programmable MAP cutoff (when using nitrous as an "anti-lag" system)
·Nitrous pressure sensor input
·Built-in MAP sensor reads from vacuum to 48 psi of boost
·Gear detection for manual and automatic transmissions
·Inputs for arming switch, bottle heater enable switch, 2 trigger switches, throttle position, tach signal, nitrous pressure, and Air/Fuel Ratio (narrow or wideband)
·2 configurable outputs for either: integrated bottle heater control, integrated bottle opener control, automatic N2O purge function, or status LED
·2 ignition retard outputs
·Digital communication port for PC or digital gauges
·Easy to use graphic set-up menus and datalogging using Windows™-based PC
·High current 2-channel solenoid driver
Wondering if it will work with the 8. Guess it's time for an email enquiry.
Last edited by Magic8; Apr 24, 2006 at 11:24 PM.
Purge Addict
Joined: Feb 2006
Posts: 36
Likes: 0
From: Southwest VA
I have Nitrous on my 8 and it is the best thing that I put on my car.. I am currently running a 55 shot because of all the other mod I have on my car is possible to run a 65 or 75 shot on a stock Rx-8 because of the headroom of the car!
Purge Addict
Joined: Feb 2006
Posts: 36
Likes: 0
From: Southwest VA
Hello Ray! I just got my emanage support tool and my emanage is installled now! I will start going up from the 55 shot I am currently running as soon as I get my AFR gauge with a additional WBO2 senor. I'll let you know the result of my testing!!!!
I will find out what they are and let you know!!!! Hey Ray I'll race you to the low 12's ET
Purge Addict
Joined: Feb 2006
Posts: 36
Likes: 0
From: Southwest VA
The Zex nitrous management unit failed. The tech at Zex said that I my have just got a bad solenoid in the box but, my replacement is in the mail now and I should recieve it by the end of the week. 
As a note to all the people that down Zex kits; I have to say that I have never had a company be so helpful and nice. They replaced my unit at no cost to me and even when ahead and shipped it when I send them the tracking # of my package to them!!! They even when as far as to say that they were sorry that the problem occured and also told me that if I have any other problems with any of their products to let them know and they would any thing they could to correct it! To me this is going above and beyond!
As a note to all the people that down Zex kits; I have to say that I have never had a company be so helpful and nice. They replaced my unit at no cost to me and even when ahead and shipped it when I send them the tracking # of my package to them!!! They even when as far as to say that they were sorry that the problem occured and also told me that if I have any other problems with any of their products to let them know and they would any thing they could to correct it! To me this is going above and beyond!
Red RX8 in Philippines
Joined: Feb 2007
Posts: 72
Likes: 0
From: Philippines
Hello CRH,
I was reading up on your post about nitrous and you really seem to be the expert on this. I am a noob on nitrous and would like your advice on how I should decide on my nitrous. Currently I can see most people choosing the Zex system over NX. The problem is I haven't seen any Zex here in the Philippines. I did see a shop with NX but the price they are asking for is astronomical compared to the price I see on the net (3.5 times!)
. Further to that they have never installed one on a RX8 (there are only 6 units in the Philippines). I am thinking of purchasing one over the net and installing it with a mechanic friend (I had my Rx-8 for only 6 months - about 6,000 miles now). Can you give me some advise on which system I should purchase? All I am looking at is a modest setup that will give me some extra boost. Any reply would be greatly appreciated and if ever you drop by Philippines, give me a holler.
Regards.
Also if I purchase a Zex system, can I refill with NX N2O?
I was reading up on your post about nitrous and you really seem to be the expert on this. I am a noob on nitrous and would like your advice on how I should decide on my nitrous. Currently I can see most people choosing the Zex system over NX. The problem is I haven't seen any Zex here in the Philippines. I did see a shop with NX but the price they are asking for is astronomical compared to the price I see on the net (3.5 times!)
. Further to that they have never installed one on a RX8 (there are only 6 units in the Philippines). I am thinking of purchasing one over the net and installing it with a mechanic friend (I had my Rx-8 for only 6 months - about 6,000 miles now). Can you give me some advise on which system I should purchase? All I am looking at is a modest setup that will give me some extra boost. Any reply would be greatly appreciated and if ever you drop by Philippines, give me a holler.Regards.
Also if I purchase a Zex system, can I refill with NX N2O?
Given that we only recently have begun to tackle the factory PCM issues with piggybacks or even the full-blown stand-alones I tend to doubt that the NX system will work reliably with the RX8. I may be wrong, though. If one were asking my advice I would say that the NX system is pretty impressive in its ability to control several parameters but those same parameters are unnecessary on a street-driven car. A well-executed nitrous system needs very little extraneous tweaking to make it work properly. All of the features on this NX system are really intended for the serious racer.
CRH
CRH
a1-8
Joined: Feb 2007
Posts: 30
Likes: 0
From: kitchener,on. canada
Do you believe that boosting your rotary through supercharging/turbo is "putting it on crack"? N2O does the same thing. It forces more air and fuel into the chamber(housings in this case), and when done at the correct air/fuel ratio with good timing (-2degrees every 50hp) you can have excellent results.Plus it isnt being used all the time either. People just throw N2O on becuase its cheap add no extra fuel and detonate like crazy and blow out apex seals. Same thing happens if you put a ghetto turbo kit for $637 and you kill your motor on 5 psi of boost. Its all about tuning. I run a 75-150 shot on a stock apex seal ported 12a. I have a 97gph pump for the carb, 114 gph gfor the N20, with MSD boxes and ign timing controll it is actuall quite nice.
Another thing is its Value Priced! I got a NX gemeni Twin that is 75-300Shot with a 15lb bottle, race solenoids, lines, plate, ect, New for $570. Thats less than $2 per hp not including extras, but the 300hp will kill my 12a, If you have a professional set it up for you, you will have great results.
Kyle Lancaster--Double Agent Salesman
Another thing is its Value Priced! I got a NX gemeni Twin that is 75-300Shot with a 15lb bottle, race solenoids, lines, plate, ect, New for $570. Thats less than $2 per hp not including extras, but the 300hp will kill my 12a, If you have a professional set it up for you, you will have great results.
Kyle Lancaster--Double Agent Salesman
Registered User
Joined: Jul 2007
Posts: 705
Likes: 0
From: new jersey U.S.A
the only trouble im have is
after i use is about 4 times and then i go to purge out my lines the next day i dont get that lovely white mist anymore does this mean i need a refill i stll have 500 psi in the bottle as per gauge(BOTTLE IS TURNED OFF ONCE IM DONE USEING)
or am i getting short changed apon filling if so
IM PUTTING THAT SHOP ON BLAST LOL
after i use is about 4 times and then i go to purge out my lines the next day i dont get that lovely white mist anymore does this mean i need a refill i stll have 500 psi in the bottle as per gauge(BOTTLE IS TURNED OFF ONCE IM DONE USEING)
or am i getting short changed apon filling if so
IM PUTTING THAT SHOP ON BLAST LOL
RotoRocks Powered
Joined: May 2006
Posts: 1,236
Likes: 6
From: Delray Beach, FL
the only trouble im have is
after i use is about 4 times and then i go to purge out my lines the next day i dont get that lovely white mist anymore does this mean i need a refill i stll have 500 psi in the bottle as per gauge(BOTTLE IS TURNED OFF ONCE IM DONE USEING)
or am i getting short changed apon filling if so
IM PUTTING THAT SHOP ON BLAST LOL
after i use is about 4 times and then i go to purge out my lines the next day i dont get that lovely white mist anymore does this mean i need a refill i stll have 500 psi in the bottle as per gauge(BOTTLE IS TURNED OFF ONCE IM DONE USEING)
or am i getting short changed apon filling if so
IM PUTTING THAT SHOP ON BLAST LOL
You are waisting too much nitrous by purging. Unless you are a t a race track, purging does practically nothing for you. it takes a few milliseconds to purge the lines at the pressures they are subjected to, so regardless whether you purge them or not, your car will go fast when you spray. By purging, you dump our a good full run worth of nitrous which is not cheap.
When I had my kit, it lasted me for days between refills, and I was spraying left and right.
I know you said that if everthing is done right there won't be any problems, try telling that to the many rx8 owners i know that have spent thousands of dollars modding there cars professionally and all of them have had problems. You are so happy right now because everthing is working out for you, just give it time you will see. All i have to say is that if the rx8 rotary was meant to run with a turbo mazda would have included this as an option for this vehicle.Do not try and kid yourself any application in this matter is just asking for trouble.
Get a backbone Mary. Are you speaking from experience? Once YOU run FI on YOUR car and it goes to ****, THEN you can come here and advise others. Provide facts, not personal opinion or hearsay for when you claim you know what you are talking about. Otherwise, read my quote below