20 shot NO2 on supercharged teg.

[SCB18B1]

If I hook up a 20 shot dry NO2 kit to my JRSC B18B1, how much more fuel do I need. Will turning up the FPR by a few psi be enough to copensate for the extra oxygen introduce into the system, or will I run into problems of running lean? As far as my fuel system goes. I have the JR upgraded fuel pump and the JR FPR.

[Mr Rogers]

I think the biggest thing is to get the flow rate of the jet you are using. Nitrous Express gave me the exact flow rates of the jets I'll be using so that I can make sure that I am adding enought fuel (since I am not using the fuel side of the nozzles). Bigkat can probably help you a little more with this as he has been running the juice for awhile on his JRSC Civic. Goodluck

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98 GS-scR w/ 8psi JRSC, Walbro HO fuel pump, AEM cai, DC 4-2-1 one peice header, Thermal Exhaust, Skunk Works cam gears, J&S safeguard, RC 310's, Cartech FMU, Vortech regulator, H&R sports and KYB AGX's, and of course to slow down, KVR X-drill F&R rotors and Carbon Kevlar pads and V1 to signal the slowing down and soon to go on the "Juice" and a CF diet.
Best et ==>13.6 @ 103mph w/ 2.3 60ft

[SCB18B1]

Since you're not using the fuel side of the nozzle, I'm assuming you're running a dry set up too.
If you know the flow rate of both jets, you're still going to add the extra fuel by means of the FPR, right? How do you figure out how much more fuel you are adding when you increase the fuel pressure?

[CivicR]

Keep in mind that you will generate more horsepower than what the jet is rated for...I have heard of someone gaining 40HP...from a 15 or 20HP jet...I cant remember which one...its from the cooling effect of the NOS...its making the charger more efficient...so keep that in mind

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John
B18C1 Powered 95 Civic EX Coupe
H22A Powered 92 Civic VX Hatch(In the works)
88 CRX HF(Coming soon)

[SCB18B1]

<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by CivicR:
Keep in mind that you will generate more horsepower than what the jet is rated for...I have heard of someone gaining 40HP...from a 15 or 20HP jet...I cant remember which one...its from the cooling effect of the NOS...its making the charger more efficient...so keep that in mind

<HR></BLOCKQUOTE>
Good point, I guess you need to add even more fuel since you're getting even more oxygen from the denser, cooler air in addition to the oxygen from the NO2, which brings me back to my original question.
So, how much more fuel do I need and how do I figure out how much fuel I'm adding with the FPR

[Holden]

Running fuel through the blower? No thanks.

Haven't we been through this already?

Greg

[VaporTrail]

I'd advise staying away from a dry setup with the blower. Too much guesswork.

Instead, what we've used is a converted direct port system, but you could also use a single fogger setup. Basically, we use only one fogger, pointed directly into the charger just before the throttle body, of both NOS and fuel. The action of the NOS serves to cool the supercharger, as well as generating extra horses. We've seen impressive gains from this. We usually jet it for 20hp (the minimum jetting), and dyno results have shown an increase of 40-45hp on a 12psi car. But this is not a bolt on operation. You must tune it. The tuning involves getting the plugs gapped correctly and the right fuel jet for your boost level. I'd also recommend going down a step in plug temp, 8's would probably suffice. Its most easily tuned on a dyno, of course.

Hope that helps.

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-JG-
00 Honda S2000
88 Honda CRX (1.8 DOHC VTEC) www.vapor-trail.net

[This message has been edited by VaporTrail (edited October 27, 2000).]

[SCB18B1]

yeah, i've read through the old posts on this topic, but wasn't too sure on if just increasing the fuel pressure would be enough to compensate for the N20 in a dry system. I agree, I'm not too comfortable with putting fuel through the SC. What about after the SC, or would i not get a even distribution to all the cylinders? I know a wet system will give me a little more reasurance from running lean, but I'm still in favor of a dry setup, but how exactly do I go about doing it "correctly"?

[CivicR]

VaporTrail...Whats your feelings on running the fuel through the charger...won't it damage the teflon coating inside the charger??..How did Kurts charger hold up with the fuel??

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John
B18C1 Powered 95 Civic EX Coupe
H22A Powered 92 Civic VX Hatch(In the works)
88 CRX HF(Coming soon)

[This message has been edited by CivicR (edited October 27, 2000).]

[SCB18B1]

I know i don't have any experience with running gas & N20 through the supercharger, but what I do know is that gas will dissolve teflon. That's one of the reasons why i don't feel comfortable with running fuel through the SC.