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First off...I'm running a 35 shot of nitrous, may eventually go to a 50 but the highest octane gas I can find close to my house it 91. I have to drive like 20 min. to the closest place with 100 octane. So is 91 too low of an octane to use with nitrous?? Should I just use an octane booster?

Second, my Denso Iridum plugs turned an orange/brown color after running nitrous. I heard this could be because of the octane booster. I may have had low bottle pressure and running a little rich also. Either way, I took out the Denso IK20s and put in some regular Champion, stock heat range copper plugs as I heard copper is the way to go. I was going to use a colder plug but I figured I'd see how they do. Should I be okay with these copper plugs??

I wanna run the Densos only when i'm running N/A. Should they still be okay even though they're brownish/orange. I didn't use them very long on the nitrous and only with a 35 shot.....

I'd post pics of the plugs, but my cam sucks at close ups....it's a cheapo

 
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Denso Iridium plugs are good to use with nitrous. I personally talked to Edelbrock myself about this.
Your only running 35 shot, 91 octane will be better than ever to use. I use 91 octane myself with an 80shot. dont waste your money on the boosters because they arent worth it. Ive tried myself, they do squat unless you put like 20 of em.
If the bottle pressure is low even by a little, I run rich too. When bottle pressure is normal or higher but not high enough to explode, you will run fine.

 
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Nitrous NooB here....

So you have a bottle pressure gauge?

civic redline: What kit are you running? I'd assume Edelbrock?

And all I'd need to do to my engine is new plugs to run nitrous?

I've checked out the DIY on nitrous but no responses.

Thanks.

 
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So how long have you been using the Denos? I know they'll be fine to use but I was told that they'd go bad really quick and I'd have to replace 'em....just dont wanna burn out $50 plugs ya know.....

 
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Yah, just buy a guage when you buy your kit, you don't HAVE to get one, but you pretty much should

 
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Yes, you should get a pressure gauge. Just buy one - you'll be happy

All you need is new (colder) plugs, such as the NGK bkr7e, and run premium gas. Just check your plugs fairly often for detonation. I keep the sockets for it in my glove box.

 
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Yea I got a gauge. Its important to know your bottle pressure. Especially when its hot. If it goes 1200 psi you better get your bottle out of there. It shows when youll get the best kick out of the bottle. You dont have to change plugs to use nitrous but it is ideal to change them.... especially if they are old. Im running a wet edelbrock kit. You should check your plugs often. Also check your oil, I know someone with a prelude got his kit installed and found out he had no oil when he was racing so he ended up blowing his engine.

For future reference, make sure your bottle is empty when you put the bottle pressure gauge on. Otherwise, youll get hurt.

 
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Ive been running the denso for about half a year now? I bought it maybe 1-2 months prior to the nitrous kit. Its still the same color. Plugs should be changed more often then a stock car. I havent changed mines yet. Denso iridiums arent 50 bucks for 4. I paid 4$ each. I think usually they are like 8-10?

 
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where do you buy your plugs? the cheapest place I could find the Denso Iridiums was at Autozone for $12/plug!!!!! Are you running a colder Denso plug? I read on Denso's website and it says you only need to go colder for every 75-100 HP increase....does that sound right???

 
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yeah but with a 35 shot like you say your going to use you dont need anything fancy. I didnt buy mines at autozone. I bought mine from a dealer. The iridiums will be just fine.

 
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you need more then plugs man....i would suggest a safc or vafc to tune it a little bit so you running correctly when spraying. Also if you get like 255 fuel pump you could easially run a 75 shot. Make sure you do nitrous right unless you like having your motor not get enough fuel and too much nitrous and blow **** up. Get that ****er tunned.

 
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Do you think they'll be fine with a 50 shot too?? Do you think I'd have to go with a step colder plugs? I just read on sparkplugs.com that you don't need to go colder unless you add 75-100HP....what do you think??

 
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So basically besides plugs....

adjusting the timing and upgrading the fuel system is a must?

 
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^^ most will tell you that it's not a must. Tons of users on here, including myself, run nitrous w/o any sort of fuel system upgrade or timing adjustments. Just make sure and run premium gas and check those plugs often - it doesn't take long

 
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where is the bets place to find kits? do i have to go direct through the manufacturer/company?

who makes kits for our cars? is there such thing as a 2001-2005 honda civic kit, or all they all generic and universal?

 
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some make kits specific for our cars while some are universal. Search ebay thats where I got my kit. Bought it new though. Also, I didnt do any timing or upgrade fuel pump and Im running 80 shot without problems. Also you dont really tune the nitrous with vafc. You tune nitrous by using different jets. For instance, your running rich, you should lower the fuel jets a lil by lil and see which one adds the best fuel with the nitrous combination. If you are detonating, you will d ecrease the nitrous jet. You dont need vafc/safc to tune the nitrous sorry this is not the way.

 
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Not Necessarily true.

Timing has a significant effect on tuning a nitrous system. Generally the higher you go, more timing should be pulled for internal safety.

People that maximize the power from the bottle use a combo of a system and fuel ECU mods so you can properly control ratios. Granted, I do agree VAFC is not the way to do it, e-manage, AEM when its out, or other ECU / piggybacks would work the best.

 
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umm, no sorry. instead of buying a 2000 unit you can just adjust the jet settings as recommended in my manual. with that you wont need to buy anything else and you can adjust everything easily.

 
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you will need to do some other mods in order to run over a recommended setting. If your withint the manufacturers recommended settings theyre all around the same hp setting. Mine is universal for 40-60-80 If I should go higher than 80 then I should do some of those mods. It will probably be better if I did do it now, but Im doing fine without the upgrades.

 
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Adjusting a jet setting is not very precise at all, no matter what your manual says....

 
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I would just have to stick with what the manual says rather than not.

 
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I know that whatever kit I get, the manual will tell me, but how do you adjust your fuel jets? Is that just some stock part of the fuel system that can be tuned?

Sorry for all the questions.

 
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You just have to unscrew the fuel line where the nozzle meets the intake, take out the current fuel jet, and put in another one.

It's really simple - you'll see what i'm talking about when you get your kit

 
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basically what this guy said. if the manual says use fuel jet # .026 and u think your running rich use one steop lower if you had .020 .023 .025 go with the .025 first and test it out. If you still running rich, then go another step. Usually the owners manual that comes with a kit will tell you which jets to use. You use the manuals jettings. Most likely you will be fine with manufacters setting, but it wont hurt to change a little.

 
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oh yeah, test all settings when bottle pressure is on green 900-950 psi? because if the pressure is low you'll run rich no matter what...

 
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So your saying to adjust fuel with AEM or Emanage? Thats for ECU tuning not NITROUS tuning.

PER NOS INSTRUCTION MANUAL.....................


Determine optimum nitrous/fuel jetting.

The factory calibrated nitrous fuel ratio included is to provide you WITH A SAFE STARTING POINT. It is intended to be used with 950psi of bottle pressure. In some cases slight changes in fuel pressure (fuel jets) produce better performance gains.

a. If spark plug apprars to excessively rich, decrease the fuel jets 2 sizes.
b. If the spark plug appears excessivly lean increase the fuel jets 2 sizes.
c. if the spark plugs are still looks new system is at a acceptable A/F ratio

 
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Thanks for posting USEFUL info Civic_Redline

 
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LMAO

Right.

You like adjusting jets, have fun. It meets the needs of 95% of Nitrous users.

Since CivicRedline said you can't use an electronic fuel manipulator, I'm just letting people know that there are other options when you want to stop being a beginner and get the most out of the bottle. Am I recommending to the person that wants to put a 50shot on a stock civic? Hell no. Am I recommending it to someone that builds the internals of the motor and wants to run big numbers? Hell yes.....

 
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I dont see where your going with this. Adjusting jets take all of what..........45 seconds?

If your using a dry kit............Yes, go buy yourself an "Electonic fuel manipulator"

If your using a Wet Kit like 95% of us are...................... You tune your nitrous with larger or smaller fuel jets.

 
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pwned...