mrr23

iTrader: (3)

i'll be dual staging the black car. almost have all the parts. current thought is dual wet. total of 200 still. might do a 75/125 or 100/100 or get brave and do a 100/150.

have everything but lines from y to fuel noids. not i'm thinking of this:

1st stage dry 75ish and wet 2nd stage 125ish. just wondering how the injectors and fuel supply will do when the 2nd stage comes on. i'll be using both at the same time. of course, still on stock injectors and fuel pump. i'm thinking i'll be ok.

thoughts? other than get a bigger fuel pump. running 200 wet now. and this is motor rating not rwhp.

i'm thinking just maybe i'll hit a 10 on a completely stock motor. stock meaning from TB to factory cats untouched.

CAT3

iTrader: (9)

Depending on your current mods, using dry upgrade injectors. Find a set off a Viper, Bosch 34lbs are like 39 with out system. I ran them with my current H/C blah blah blah, and sprayed 120 something (no jet 5177 single noid) with room to clear on the IPW. Good luck. I like the dry 1st followed by wet, use timing and fueling based off the dry to run a "dual tune".

mrr23

iTrader: (3)

current mods to the black car are this:

SLP airlid
K/N filter
Bassani tru-dual exhaust
Yank PY3400E
3.73 gears
Vinci tuner

i don't see a need to upgrade injectors if i stay at 75-100 dry. i could be wrong.

brad8266

iTrader: (23)

Yeah you should be ok with the the stock injectors, pump isnt ever a bad idea though.

mrr23

iTrader: (3)

yeh i know. playing with fire on a stock fuel pump. it's doing good now with the 200 wet. last time i dyno'ed was before the bassani tru duals. it was 139 rwhp on a 200 motor rating. .076/.045 jets

CAT3

iTrader: (9)

Is the black car the 2000? If so, definately at least get 98, 01-02 injectors. Our 2000 inj, suck. Why was the rwhp down so low? Rich as **** or just plain old design.

mrr23

iTrader: (3)

yes, the 00 formula. i am thinking about upgrading to the stock 28# injectors. a/f ratio was at 11:1 ish who knows. most likely the reason why some companies are going the rwhp rating now.

the wife's 150 motor rated ny-trex kit put 110 rwhp .067/.032 jets

Robert56

iTrader: (2)

10 sec car on stock long block here, not even headers. did it with a 125rwhp dry dual stage.
Robert

mrr23

iTrader: (3)

you say stock long block. i'm saying everything stock from TB to cats. including cam. if so, good job. just need to know your secret. other than a better track location.

anyways, when you did that, was it a total of 250? dual 125.

CAT3

iTrader: (9)

Not stock injectors though right Robert?

Robert56

iTrader: (2)

Stock injectors (28lb), stock fuel pump (550hp vette Walbro), the only changes were CAI (Vararam), plugs (Tr6) and self tune (HPT/WB). Total shot was 125rwhp for both stages, on run in sig, which was a high 10.xx except for hitting rev limiter going to 4th (.100 lose).
I now have 42lb injectors and am changing fuel rails to return and regulate at rails for consistant pressure at high loads. Was kicked off track for to fast and no roll bar before seeing limits of system. Next year I'll be deep tens on basic same set-up with a little more spray and 3rd stage for mondo runs when pushing limits. I have run the 200 shot, but not at the track, and went leanish. Dynoed 480rwhp and 505 torque on a 135rwhp shot set-up like above. My only secret is the progressive nature of multi stage allowing a dot tire (315 BFG) to hook and supply 1.5x 60'ers.
Robert

mrr23

iTrader: (3)

so, to answer my question, i can run a 1st stage dry of about 75-100. then hit the 2nd stage wet 125-100 without problems. this all simutaneously. making a total of 200.

GM Muscle

iTrader: (9)

I really think that you'll need a pump with a hotwire kit. From there, you'll be good to go. Your probrably going to show a nice lean spike when hitting the larger wet shot with the stock FP regulator in the tank. It's a real good idea to elimnate the stock one and put an aftermarket one at the rails. I still havn't gotten around to doing mine but really need to, I was loosing 12psi on the initial hit and it wasn't recovering as quick as I would have liked. Shouldn't be nearly as bad on with a stock long block though.

CAT3

iTrader: (9)

I was considering doing the rail regulator, but I want to see if using the wet second, with the dry already flowing if the hotwired pump can keep up. If not, well, it could end up being an expensive lesson for me. Not that I am all about pushing the limits...but after being one of the 1st with the NXL, jetted to 220 and talk about a lean spike...try 30:1afr for a gasping breath! I ditched the NXL before they attempted the cure of the surge tank, which from what I hear also has a lean spike over 180 shots.

Robert, thought you meant you went 200 dry on stock inj...I was about cry.

Robert56

iTrader: (2)

You guys check in the fueling section for thread from Racetronics. They are coming out with a kit for replacing pulser with reg at stock rails and return line, for about $300. MDMC has one with a remote reg for $1300, so Racetronics will be a deal.
Robert

mrr23

iTrader: (3)

i think i've decided on dual wet for now. have a wiring schematic to be able to turn off the 1st stage and turn on the 2nd stage with the flip of a switch.

or, i might still run both at once.

Robert56

iTrader: (2)

If you need anything let me know, I can cut ya a deal. Good luck, though.
Robert

mrr23

iTrader: (3)

i already have most of the pieces. just got to figure out where i'll be placing the fuel noids and then i can tell what length lines i will need to go from the Y fitting to the noids. thanks though.

i was thinking dry still, but don't know how the injectors will like the higher duty cycle. then hit it with a wet on top of that. i know the fuel pump is sustaining a full 200 (motor rating) hit now.

so long as i split it up, i think there will be less stress on the fuel pump by dual staging it. two small 100 shot initial demands on the fuel pump as opposed to one full 200 shot. the pressure drop would be less. the fuel pressure would stabilize on the first one before the demand comes for the second one. hey, i could be wrong though.

mrr23

iTrader: (3)

stage two is complete. going 50hp first stage and 200 on second stage. these are motor ratings.
http://www.stealthram.com/2000formulanitrous.htm

redline2k

iTrader: (9)

In my car the second stage makes the nitrous cut-off at the 1/8 mile mark. The setup is dual wet nx 100/100 but is also a h/c car with 36/lb injectors. I am going to a stand alone system.