I have got a disease and the only cure is more nitrous. So what I did today is spent money. I filled up my bottle for one. Second I bought some more fittings so that I can plumb my second stage. The second stage will be my old dry setup that I sprayed through the throttle bodies. I had a few people interested in buying my old dry setup, but I guess the $250 was just too much money or soemthing I don't know. SO I said what the hell and figured I would use it to give me a little more power.
Spent $70 on the bottle refill. Wow you are probably thinking to yourself. Thats expensive. Well not really now that I upgraded to a 20 lb bottle!! All I have to say is taht this mutha is HUGE!. It doesn't even really fit in the footwell anymore. Its fatter and taller then my 10 lb bottle so the passenger is def going to have a big fatty between his/her legs when riding with me. I dont' have a pic of that yet but I prob will eventually. I am too lazy to go out and take one now
I did get some pics of how I will probably route the second stage. So you will see those below. Basically I am going to T into the main feed line and have one line going to the direct port side and then have the other going to the dry setup. I will be keeping the jets on the second stage small at first till I get this thing on teh dyno with the wideband. I totally spend way too much time there I know but whatever.
The reason why I am doing this is because I was disappointed with my torque curve after going to the direct port. My tq numbers down low are off the charts compared to my old dry setup so that makes it much more fun, but the tq falls off quicker adn I am hoping to get some of it back. The tq with the direct over the dry yeilded me an extra 60 ft lbs of peak tq(190 now 250). Thats a bunch more tq however the tq on the direct is taken at a very high 3800 rpm or so on all the runs I have done. SO its probably more like 280 wtq at 3k rpm which would give me almost 90 lb ft more tq over my dry setup. Makes for a lot of fun down low.
With the dry setup though my tq stayed at 190ish all the way till 5k rpm and then it started to fall off. I was very happy with that. With my direct port I am at 200 lb ft at 5k rpm so I am really only making 10 more lb ft at the same rpm with the direct. I think this has to do with the dry filling up those intake tubes and allowing the engine to really allow it to breath much higher overall concentrations of oxygen at all engine speeds. So my goal is to spray a second shot dry in through the tb's like my old setup and allow the motor to pull a more concentrated nitrous charge from my starship Nay-cells..
If I can keep my tq up like around 250 all the way to 5k rpm well then you know what that will do to the hp curve as well. I am actually not expecting it to stay that high but it would be nice. I am actually expecting it to drop down to about 230-240 with the second stage which will put me at about the same amount of power. I just really am doing this to level out that tq curve like with my old dry setup.
It takes about 500 rpm for the engine to really start to suck up the nitrous from the nay-cells so I am a little unsure right now when to activate the second stage. not sure if I just want to tie it into the first stage and say to hell with it, or to wait till about 3500-4k rpm to hit the second stage. Since it takes about 500 rpm for the engine to start really pulling air from the intake, this will put the window around 4k-4500 rpm when the engine will be breathing the second stage. Taht gives me a good 1500-2k rpm of more tq. I would hate to hit it too late at like 5k and it not doing anything till 5600 rpm or so. That wouldnt' give me much extra power. This will all take dyno time to figure out when to hit it and how much to add. I am still running way rich with the direct port even with smaller fuel jets so I have lots of room to play with here. Timing will be retarded another 2-4 degrees and I def need to run a colder plug. I have been working with stock heat range plugs this whole time and they are just running way too hot.
Onto the pics.
Here is a pic of the last dyno I had. Like I said I want to keep that tq up. Its falls hard from 4k to 5k rpm. almost 50 lb ft. I want that tq back!!
