karpetcm

iTrader: (2)

Well i at first i ran 54N and 32F and got an A/F of 11.5-11.7 thats rated a 125 shot. So then i stepped up to 57n and 36f and got 10.7 A/F, then i went to 57n and 34f and got 10.9-11.0 A/F. So i stepped up and did 60n and 34f and still getting 10.9-11.0 A/F consistant. Is my nitrous solenoid maxing out after 125shot hit?. I did initially when i was running a DRY system had my tuner add more fuel on the nitrous.

I still have that tune and i think i need to tell him to back the fuel off to were it was before. Just cant figure out whats going on. I could go to a 60n and 32f which would seem odd to me to get the A/F back up to 11.5 but it was running a decent A/F with 54n and 32f before i dont understand why i need to step up the Nitrous jet to go to were i was at before when i was using 54 and 32.

Only explanation i can come up with is after a 54n jet im maxing out the solenoid. Im gonna try one more time when i get back from vacation and do 60n and 32f and if the A/F goes up to 11.5 as before then it has to be maxing out but then again i just dont know.

Fbodyjunkie06

iTrader: (10)

What size lines from the bottle to solenoid? What size line from solenoid fitting to nozzle or plate?

What size orifice does the solenoid have?

Do you have a fuel pressure gauge or a nitrous pressure gauge?

Was the bottle loosing pressure?

karpetcm

iTrader: (2)

bottle pressure start is 900-910psi and goes down to about 875-890psi at the least. I have a bottle heater as well. I just have nitrous pressure gauge no fuel pressure gauge. The lines are standard i dont know the exact size of the lines. Its just the dynotunenitrous kit for our cars. Its a shark nozzle as well not a plate. The nitrous solenoid is there standard one rated from 75-150 shot.

402GOAT

iTrader: (2)

I'm gonna bet the feed line to the solenoid and the line from the solenoid to the nozzle is the restriction. For anything over 125 you need to be using a 6 an feed line and a speacial hose from the solenoid to the nozzle which is a 4 an line with a 3 an nut on one end to hook to the nozzle. Nitrous outlet carries this hose.

camscam02

iTrader: (21)

Thats not the problem. All the stock stuff is fine for what he is doing.

What was the weather difference between these tests? How is the tuner adding subtracting fuel?

402GOAT

iTrader: (2)

Lol. Ok. Op. I fought this exact same problem last season. Stepped up my feed line and problem solved. Do what you wish though.

87silverbullet

iTrader: (11)

Dude, your setup is a total different animal from what this guy has. The OP has a few things in his system that might be causing the issue. That nozzle just might not be flowing correctly and maybe the solenoid is not up to par. That dynotune stuff is dirt cheap to buy. Its cheaper than the economy line of Brand X that Nitrous Outlet sells.

FYI, the -4an feed line you are talking about has been tested time and time again. Ask the big guys here ATV, Shiz, Cam, firehawk441 and Noyzee and they will all tell you that a -4an will usually start to see problems at a 225 shot. I have personally sprayed a 200 with no issues on a -4 an

Nitro Dave's Nitrous Outlet

iTrader: (25)

Ok,
What does the car do on motor? If you have your pcm tune adding fuel to compensate for an old dry set up thats your first issue. The N/A tune sets the platform for the nitrous. Get it flat across the pull.

Second. Technically the solenoids and hose you have should be ok to about a 150 shot. Unless it is a .063 which a50 hp would be a max flow of the solenoid. In a system it would produce less.

Upping the bottle pressure to 950 would not hurt.

Check and make sure you have a good bottle fill and not running out of nitrous.
Dave

karpetcm

iTrader: (2)

Im on my phone so sorry if I miss spell. On motor I am running 12.3-12.5 a/f. So it will effect my nitrous no doubt and im thinking its most likely that. Have Frost set it back to the way it was before. Its too rich for a wet set up I think. It hits hard and good but I can smell a ton of fuel after a run no doubt. Even with a 60f and 34n.

karpetcm

iTrader: (2)

I meant 60n and 34f lol

Fbodyjunkie06

iTrader: (10)

That does sound a little rich on motor.

Have frost or another tuner reduce the coefficient your using in your VE table during the RPM range you are seeing 12.2-12.5. This will lean it out in that rpm and kpa range.

karpetcm

iTrader: (2)

Ill send out my computer asap and have him pull back the full a bit and call it a day. I wouldve been ok woth it at a bit higher but the a/f drops more and more with each run so I gotta tune it.

karpetcm

iTrader: (2)

Damn hate using the phone. Sorry for the mistakes lol

Fbodyjunkie06

iTrader: (10)

Just for reference even though every motor will be different I ran mine at 12.9-13.1 on motor.

karpetcm

iTrader: (2)

Thats what mine was actually. After I told him I needed more fuel for my dry shot it also changed for my n/a as well.