Need some nitorus help.
Need some nitorus help. Ok I have yet another problem. Today I ran the car on the dyno so that I could get an accurate a/f ratio and just see all around what it was doing on the spray. Well the N/A a/f ratio was 12.3 a little rich but no biggie. On the spray the a/f ratio was 14.0
. That is not good. We had to shut it down early because that a/f is scary. So the shop thinks that I need a bigger fuel jet. Zex told me to use a 46 nitrous pill and a 28 fuel pill for a 100 shot. What do you think? I have some scans that I can post if necessary but they do not include the a/f ratio.
. That is not good. We had to shut it down early because that a/f is scary. So the shop thinks that I need a bigger fuel jet. Zex told me to use a 46 nitrous pill and a 28 fuel pill for a 100 shot. What do you think? I have some scans that I can post if necessary but they do not include the a/f ratio. 
TECH Apprentice
Joined: May 2008
Posts: 351
Likes: 0
From: Charlotte,NC
Damn, I know all the kits are different but NX told me .052/.033 for a 100 shot, that's what I ran when I had a 100 shot. That said the ratio seems decent and it shouldn't run that lean. Does your fuel solenoid work? My first guess would be it doesn't or goes on/off intermittently. I would pull both lines off the nozzle and check to see if the fuel solenoid is spraying any fuel.
Damn, I know all the kits are different but NX told me .052/.033 for a 100 shot, that's what I ran when I had a 100 shot. That said the ratio seems decent and it shouldn't run that lean. Does your fuel solenoid work? My first guess would be it doesn't or goes on/off intermittently. I would pull both lines off the nozzle and check to see if the fuel solenoid is spraying any fuel.
yeah I was told the fuel pill may be to small. I tested the solenoid before I put the lines in and it was spraying fuel and nitrous. I could check it again when I pull the line to change the pill.
It was also suggested that I may need a standalone. If so would a boost pump work? Like this one?
http://www.compperformancegroupstore...Category_Code=
Could the fuel rails possibly be getting starved? If so would an aftermarket set of rails help?
The car made almost 500 rwhp N/A without the nitrous so maybe Im getting close there?
The car made almost 500 rwhp N/A without the nitrous so maybe Im getting close there?
What fuel pump u running? If ur running a single Walbro 255 then there is no doubt your running out of fuel.
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yeah i dont have the time to try and fix this. I just need to figure out what I need to do to fix it. I am moving to japan soon and just want to fix it or get rid of the nitrous I guess. This is frustrating to say the least. I did a lot of reading and research and was sure that a 100 shot would work with my car.
Do you think a dry kit would perform better than a wet one? My injector duty cycle is only at about 68 percent max when running N/A.
Do you think a dry kit would perform better than a wet one? My injector duty cycle is only at about 68 percent max when running N/A.
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You need to get an accurate dyno tune by someone local and up the fuel jet some.
Best thing to do is put a fuel psi gauge on it and see what the fuel is doing on motor first and then on the spray.
Best thing to do is put a fuel psi gauge on it and see what the fuel is doing on motor first and then on the spray.
Not yet but this was my first plan of action. I need to order a few more.
