pyro719

iTrader: (5)

I was at the dyno yesterday and my car had a 13/1 afr on motor and went to 16/1 on the 150 shot. Im running a nitrous outlet plate kit. the car made 318 rwhp and 461 rwhp on the bottle. Why would me car lean out like that? Could it be air in the fuel line and noid? This is the first time ive sprayed the kit.

twpetry

iTrader: (1)

you sure you got the right fuel jet?

slow trap

iTrader: (22)

it will have a quick lean spike but should have dropped back quickly after that. have you got a fuel pressure gauge ? it may be the pump.

pyro719

iTrader: (5)

Yup right fuel jet. 62N 38F It has a brand new walbro 255 in it. Ill put a gauge on it.

=ZoomZ=

iTrader: (1)

Maybe someone pissed on your LT1 ? haha

Was it a 16/1 spike or did it run out across the graph like that ?

Spikes are common in the beginning of a dyno run .

I would look into your fuel supply for sure .

Z-RATED94

iTrader: (6)

No idea whats up with your A/F. Mine was right on the money, and there was no lean spike to speak of with Daves plate kit. I gained what you did, as far as the increase of rwhp with the 150 jets.

pyro719

iTrader: (5)

I put a gauge on it today and it has 40psi and with the regulator unplugged it has 45psi. But whn I spray the fuel noid pressure drop to 35psi Think a hotwire kit will help this?

Z-RATED94

iTrader: (6)

I'm not sure, but my quess is, it can't hurt. Normally when you see the pump in someones sig, you take it for granted they used the hotwire kit.

pyro719

iTrader: (5)

I just ordered a ractronix hotwire kit. Hopefully this will give me enought fuel. Im only making 460rwhp I think it might make 480 with fuel lol

Nitro Dave's Nitrous Outlet

iTrader: (25)

Have you varified the fuel solenoid is firing and flowing strong?
Dave

pyro719

iTrader: (5)

Yup pulled the line off the plate and sprayed it into a beer bottle. alot of air came out at first but then a solid spray of fuel came out.
Filled the bottle about 1/4 up with just three quick sprays from a 38 jet. while bogging the engine.

GT Griller

iTrader: (8)

Why would it bog the engine?...my understanding is that a wet kit adds the fuel....so when u spray it ur injectors shouldnt spray extra fuel therefor no bog.

pyro719

iTrader: (5)

It bogged when I sprayed the fuel noid into a beer bottle with the car idleing. Because pressure dropped to 35psi

Pwebbz28

iTrader: (31)

Pressure should not drop. Your pump is not sufficient.

pyro719

iTrader: (5)

3 month old walbro 255, I got the hot wire kit to keep voltage up at the pump. The stock wiring is only 18 gauge cant be good

ShiznityZ28

iTrader: (11)

do you have an aftermarket regulator?

pyro719

iTrader: (5)

Nope. Put a new stock tegulator in it 3 m onths ago as well.

ShiznityZ28

iTrader: (11)

the 255 on a good regulator should feed 700 fwhp easy. if you emptying the lines on that small shot something is not right either the regulator or pump. did you change the fuel filter? also try blocking off the fuel noid so its not actually flowing fuel just clicking . If it still drops it could be a voltage issue instead of a fuel flow issue.

Nick@HSW

iTrader: (4)

Its going to drop when you have the line venting into the bottle. Just think of it as a giant leak. You need to verify that a) you're not seeing a huge pressure drop while spraying b) the plunger isn't swollen (keep in mind plungers lift off the seal mere fractions of an inch) c) you're line isn't too long. Start with the basics first.

Nick

pyro719

iTrader: (5)

I didnt just spray the open line into a bottle. I conected the fule line to a nossle with the 38 jet in it.