Nitrous Question
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Joined: Aug 2005
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Nitrous Question
I have the h/c setup, long tubes, cai and gears, and I was wondering about a dry nitrous setup. How safe are these setups and does the car need another tune? What happens if you were to make some passes at wot and you ran out of nitrous? Any input would be much appreciated.
Drifting
Joined: Sep 2005
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From: Home Southern Maine
St. Jude Donor '08
Originally Posted by Chad@AZPower&Sound
You can run dry nitrous before the MAF but the car will need larger injectors and a new tune. If the bottle runs out then the MAF will compensate.
Chad
Chad
Dry is argued to be safer than wet (I agree), however dry needs to be done right and not just bolted on and assumed 100-125 shot is ok.
I did a Dry and Wet two stage on my 99. I have the 26# injectors and with a 50 dry shot I am running a injector duty cycle of 106% from about 4500-5400 RPM. My AFR is a nice 11-11.5 despite the DC of the injectors.
With a 75 shot my AFR was 12.5-13 so I went back down to the 50 to keep under 12 AFR.
To try and improve the AFR, I tried different nozzles to see if that would cure the AFR @ 75, no dice, then I got EFIScan and discovered the injector issue.
I am going to bump up the injectors to 37's or 42's to take full advantage of a dry system. Til then I have a 125 Wet Plate I use for my primary system.
IMHO from my recent dry expierence STOCK 99-00 C-5s can use a 50 dry safely (26# injectors being limiting factor).
If Timing was advanced in your H/C setup you may need to retard it a bit, general rule of thumb 2° for every 50 HP. Also colder plugs TR6's @ .035 for Nitrous is recommended.
Advanced
Joined: Jun 2006
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From: Marysville Ohio
Originally Posted by Chad@AZPower&Sound
You can run dry nitrous before the MAF but the car will need larger injectors and a new tune. If the bottle runs out then the MAF will compensate.
Chad
Chad
Dry is considered safer because youre relying on the computer to read the extra oxygen and adjust your mixture to compensate. It eliminates the usual fuel solenoid, thus problems like blown pistons from that solenoid not working and running way lean.
