NOSzle issues......
NOSzle issues...... Just installed new NOSzle system. All seems faily well other than it is not a pretty system...Just too many lines evertywhere and no "good" place for the solenoids to be mounted.
Problem is it bogs for a second then hits REAL hard. I have it wired to a button as I did my old single nozzle NX system. It just falls on its face for a sec and then hits and runs fine @ around 12.5-13.0 a/f ratio. It almost acts like low bottle pressure or a kinked line but those check out fine.
Any ideas?
Problem is it bogs for a second then hits REAL hard. I have it wired to a button as I did my old single nozzle NX system. It just falls on its face for a sec and then hits and runs fine @ around 12.5-13.0 a/f ratio. It almost acts like low bottle pressure or a kinked line but those check out fine.
Any ideas?
Launching!
Joined: Nov 2002
Posts: 224
Likes: 0
From: Florida
Re: NOSzle issues...... Stang killer is on the right path. Sounds like a classic case of fuel hitting before the bottle.
Get a purge valve and that will go away, it's a must with a port injected system.
Get a purge valve and that will go away, it's a must with a port injected system.
Re: NOSzle issues...... I do have a purge, still boggs. I have the 175 jets in now but have not looked at fuel pressure as I hit it yet. I am on high pressure off of the fuel rail. On initial hit a/f ratio hits 20 for just a sec and then drops to 12.5 or so. I am fairly sure it did this on the single nozzle kit @150hp anyway. Maybe I am asking too much from the fuel rail to supply? I do have in line t-rax pump which should be good up to 200 hp. I may jet down to 100hp and see what happens.
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Teching In
Joined: Sep 2003
Posts: 46
Likes: 0
From: Sulphur Springs, IN
Re: NOSzle issues...... Your stock fuel pressure should be around 54 psi. That could be part of your problem. A friend is putting the Noszle system on his Z06. He called NOS and they told him to use smaller fuel jets, but I don't know how much smaller they suggested. You might give them a call.
Todd
Todd
TECH Apprentice
Joined: Oct 2002
Posts: 321
Likes: 0
From: Aurora IL
Re: NOSzle issues...... how long are your lines? are they all the same length or did you shorten the fuel side? give me a shout and lets compare setups. i am not sure how big of a hesitation your getting as i do have about a .5 second delay when mine hits. i am also pilled to 175. i changed my jets to 16/ 26 and i get a 150RWHP level out of it. still running 10:1 on the dyno as well. i have been really happy with mine so far. 132mph traps on a stock Z06 were real suprising to a lot of people including me!!
Wes
Wes
Re: NOSzle issues...... my lines are all the same length, I'd have to measure to see how long maybe 12" or so. I did find 2 lines on the n2o side that MAY have been tightened too tight and crimped the line..again this is a MAYBE. I will try again tonight and see. I think I have a fuel pressure regulator laying around left over from a Supra that I may try, dropping the pressure before the solenoids.
I am pretty well familiar with n2o as I have been running it for years. This car has gone 10.3's on a single nozzle with a stock bottom end. I just can't figure this one out.
Maybe I should shorten the n2o lines? smaller fuel jets? put in a reg. and drop pressure?
Could it be draining the fuel rail? Is there anyway to have a small reservoir in the line w/o doing a complete seperate fuel system/cell?
I am pretty well familiar with n2o as I have been running it for years. This car has gone 10.3's on a single nozzle with a stock bottom end. I just can't figure this one out.
Maybe I should shorten the n2o lines? smaller fuel jets? put in a reg. and drop pressure?
Could it be draining the fuel rail? Is there anyway to have a small reservoir in the line w/o doing a complete seperate fuel system/cell?
Re: NOSzle issues......
i do have about a .5 second delay when mine hits.
Anyone else have this system have the same problem?
Re: NOSzle issues...... OK, I have a regulator before the solenids now, set @ 5.5 psi flowing through a #70 holley jet(should be equal)I may drop fuel pressure to 5 psi because it is between 10:1-11:1 on wideband. still has a hesitation but runs like a beast after initial hit. Running 28/28 jets.
Any ideas?
Any ideas?
TECH Fanatic
Joined: Aug 2002
Posts: 1,017
Likes: 0
From: CT
Re: NOSzle issues...... how much power did you make with it set up that way
also try not to get any lower then that fuel i would up to 6 psi and go down with the fuel jet
maybe 28/26 or I have run with great luke on a noszle kit 30/28 which you should have for jets in your kit pull timing back to 21 and put fuel pressure at 6.5lbs see where that puts you
my guess a little over 300hp and safe
also try not to get any lower then that fuel i would up to 6 psi and go down with the fuel jet
maybe 28/26 or I have run with great luke on a noszle kit 30/28 which you should have for jets in your kit pull timing back to 21 and put fuel pressure at 6.5lbs see where that puts you
my guess a little over 300hp and safe
Re: NOSzle issues...... That was not on a dyno. I have a wideband (FJO) in the car. I am going to the track tonight to do a "real" test. Not sure how bad the bog is from a dead stop. If it still bogs I will try to drop the fuel jet.
Thanks for your help!!
Thanks for your help!!