Join Date: Sep 2009
Location: North East AR 72455
easiest thing to remember about running nitrous as I have done it on various vehicles from a V6 tbird (89 model) to a 2000 crown vic police interceptor to an 02 windstar and a 90 lincoln town car.... if it starts to do unusual stuff, shut it off IMMEDIATELY.... if you are on a run down the track and you hear or feel a slight stumble, its not everything saying "get off the gas and jump right back into it again!!" something caused that stumble so finish out your run on a coast out. Better to lose a race and still have an engine than to keep in it and have a collection of scrap metal. The 2000 crown vic had a 100 shot on it with everything bone stock and untouched except newer coil on plug units from an 02 gt mustang. It ran a 9.90 1/8th mile black tracking the tires all the way to the 400 ft area.
Pull your plugs and check them out under a magnifying glass. if you see mild pitting then you are going a bit lean and need to change the pump strainer in the tank and the fuel filter, but since you are already in there, go ahead and get you a 255lph pump and install it. they are less than 100 on ebay motors. now, dont think cause you got a new pump you have a new engine... proceed very cautiously and what I always recommend you do is get a collection of different jets for nitrous.
Bad part is that to get every sice they make and have 2 of them on hand would cost you almost 1900 bucks. Granted you may never run the same sized pills on both nitrous and fuel, but hey, you never know what can or will happen in the world of racing...
One last thing, GET A FUEL PRESSURE GAUGE INSTALLED on your fuel rail SCHRADER valve location, as soon as possible. The reason I say this is simple... you can RUN TEST your fuel system by taking your nitrous fogger and removing it from your intake tract, and (leaving the bottle off of course) run your engine at about 3000 rpms and hit the nitrous button and see where your fuel pressure sits at... have the fogger held by a buddy pointing into a milk jug or a gas can. it should stay above 34 psi. also, the reason for having the nitrous fogger pointing in the jug is that the jet in the fogger provides resistance that the line itself does not, so you will get a more accurate pressure gauge reading while doing it.
Something else, I ran a 220 shot on a 90 lincoln town car with 160K miles on it and only went one stage colder plugs, but I also bought double platinum autolites... never had a tune and never ran anything but the stock fuel pump. it was still in the car when it went to the crusher. I may have been blessed by the racing gods, but that 4400 pound car went into the 8 second zone (1/8th mile) with my 330 pound big butt driving it.
Point is this, be careful and check everything over. if it is all within parameters, check it all again to make sure... then go race and beat on some ricers..
last thing is this, nitrous is addicting, VERY ADDICTING... so be very careful and never have the bottle hooked up when driving around, plus dont ever bypass the safety valve in the bottle. have fun and enjoy the laughing gas