06blackGTO

iTrader: (20)

If anyone can help, I would really appreciate it. Car seemed to be running fine, I went out today and tried the 150shot out, the nitrous controller went lean all of a sudden and shut off, so I turned it off, purged out the line, and tried to go wot just on the motor. It maxed out my af gauge at 18.8af. I tried it once more for a sec. and the same exact thing. I have a walbro 6 months old. and a elec. fuel pressure gauge, it was holding strong at 60psi. any idea on what it could be? It's not throwing any lights, but I don't have a scan gauge. I wish I did at this time. I pulled the plugs, and they seem kinda blackish color, but didn't smell like fuel, kinda smelled like a burnt smell. Could it be a bad 02' ?

I have a infrared temp gun, and it seemed like the front driverside cylinder is running alittle hotter, I plan on starting it up and letting it warm up and taking a reading on all header flanges at each cylinder.

06blackGTO

iTrader: (20)

On my stethoscope, I can hear all injectors firing. took a reading in each header flange.

1- 330
2-292
3-300
4-277
5-305
6-305
7-277
8-293 degrees.

fuel pressure is holding great, I wish I had a damn scangauge, could it sound like a 02' sensor?

06blackGTO

iTrader: (20)

anybody? I replaced the 02's still doing it, when I went to spray it yesterday, for some reason the nitrous selenoid came unhooked, so it was getting extra fuel in the intake. I hit it twice,then I realized what was happening. so could the extra fuel have hurt something, a sensor as soon as I hit go wot, it goes straight lean. Could it be the map sensor? My car has no maf, it's sd tuned.
Im really stumped.