Rep Power: 281

I have a few questions i need anwsered before i spray. I dont wanna get this kit and and **** stuff up. Right now im tuned for just na which i had done after my head swap and full bolts on. They leaned me out a bit cause i was really rich up top. Now the question is....does the nx wet kit automaticly take the right amount of fuel to mix with the spray so that you dont need to get retuned?

Also I got my 7 step plugs ordered and i was wondering what gap i should use on them.
Thanks for the help in advance

 
Rep Power: 0

i got the zex nitrous spark plugs so they were already gapped so i cant help u there but, even though u r gettin a wet kit at least get a vafc or safc to tune it on the dyno. I am running fine after 2 bottles of spraying 50 and 75 shot and the mtr is still fine but with tuning ur engine will last longer and be much safer

 
Rep Power: 288

^^What the N20 ***** said!!! LMAO!! Since your car was tuned...my question is are you running some sort of management? Honestly I have heard of a lot of people just going 2 steps colder on the plugs and spraying with no problems...SAFC or VAFC might be a little safer for you though!!
P.S. The N20 ***** (allmotor ^^) has one for sale!!!

 
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yeah lol thanks knoc.

 
Rep Power: 299

Your nitrous tune isnt going to be different than NA. What you need to do is find out your fuel pressure and set your fuel jets according to that.

For example (from NOS not NX)

75 shot (which is the 36 jet)
If your fuel pressure is 20 psi you need to use the 24-26 jets
If you fuel pressure is 30 psi you need to use the 22-24 jets
If your fuel pressure is 40 psi you need to use the 21-23 jets
If you fuld pressure is 50 psi you need to use the 20-22 jets

With NOS, it says to use 36 nitrous jet and 24 for the fuel jet for a 75 shot. If you do that youll be running WAY to rich. They use that number based off of a fuel system that runs at 30-35 psi. Like is said the d17 fuel systems opperates around 40+ psi
As you can see, the more fuel pressure you have, the less fuel you need. When i had the stock fuel pump i think my fuel psi was around 44, after a 15 second continuous run fuel pressure would drop to 32-35 psi causing it to run slightly lean. Which is why i HIGHLY recommend getting a booster pump like MSD or just get the walbro 255lt pump.

Oh yea Id also recommend running 100 octane and make sure you head bolt are a few pounds over stock! After a hard run let your car cool down ASAP!

Once you do that hit the 75 shot and enjoy!

 
Rep Power: 295

What kit do you have and what kind of spark plugs did you buy?

 
Rep Power: 295

Also remember, with nitrous or any forced induction, its better to be little rich then to be lean on fuel. Not enough fuel = new head gasket

 
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and just so EVERYBODY knows, DO NOT RELY ON STOCK GAPPING OF SPARK PLUGS! They may say PREGAPPED, but BULL! they are never ever ever ever ever ever ever ever the same. They will all be within 5-10 off. So ALWAYS CHECK SPARK PLUGS, EVEN WHEN PREGAPPED, THEY WILL WILL WILL BE OFF!

 
Rep Power: 281

I have the NGK zfr7f-11 pulgs

I dont know what to gap them to...i think they are at stock gap now. I might go into my vafc and go like 2 percent richer on all my settings to start off.