[brj333]

Went to the track last night and when i come out of the hole and the no2 kiks in the car falls on its face then goes how do I get rid of the dead spot fastest time was 12.9 at 113.4 mph

[Fast1]

Might wanna check ur micro swithes connection...Mine was loose and was kicking on and off..Also do u have a purge valve?

[brj333]

the connection is fine I think it has to do with air fuel mixture I think its such a shock when the solinoids open

[Fast1]

Whats ur fuel jet size?

[brj333]

I think I have the wrong jets for this kit because the jets are brass and apparetly with 38-45 psi of fuel its not possible to consistantly controll the amount of fuel with a brass jet

[ro51468]

Don't believe it has anything to do with the jets. You may need to get your launch RPM up to get beyond the bog. It may also be an air pocket in the N2O feed line. How long do you purge before you stage the car? It should be about 4 1 second long bursts to purge all the air out of the line.

Ron

[brj333]

my purge solinoid was bad out of the box that is a good quetion if its air bubbles I would have to check

What kind of kit and what jets? also whats your fuel pressure?

Dead spots are usually rich or lean spots, they can also be caused by spark blowout. With nitrous you have higher cylinder pressures at lower rpms and therefore more chances of spark blowout at low rpms.