Here's what I have; fjo mini controller, direct port setup for 300hp, stand alone fuel system (low pressure). I haven't sprayed the car since last november at which I was using only 80% of the 300 on the controller, 1000-1050psi nitrous, 9-9.5 psi fuel and some 7's for plugs gapped at .032 . Everything worked fine then. Today I went up to the full 300, same nitrous and fuel pressure, and 8's for plugs gapped at .032 . Everytime expect for one pass the car would break up bad like there was no nitrous being used. I checked mult. plugs between passes and they were nice and tan I think they should be. I pulled the silinoids (sp) apart to check for any trash, both came up clean. And yes I pulled 12 degrees of timing out before even starting. Any ideas???????

 

ttt.......

 

Still looking for suggestions....

 

Hope I didn't stump the nitrous crowd...... still could use some help/suggestions/anything.

 

If you didnt shut the car down as soon as you let off the gas then the plug readings are not any good.
What did the car run? what is done to it?
Do you have a wide band? Could be to rich.

 

At the track I didn't pull the plug until I got back to my truck but once I got it home I did run it down the street and shut it off and coasted to my driveway to check the plugs and the readings were the same. Everytime the nitrous acted up I aborted the run, shut of the nitrous and just ran down the track pretty fast. The car is just a H/C with direct port system. As for wideband yes and no about having one, I have access to one which I will be using tomorrow. I too think the motor went way rich but we'll find that out tomorrow. I think that because it acted like I tried to spray without opening my bottle (did that on accident before).
I went ahead and applied power to the noids to see if they were opening and the to my surprize it took a couple of times touching the ground to get the fuel noid to open and the nitrous opened up right away. The exact opposite of what I was thiking that it was doing, go figure. Tomorrow will tell alittle more. But still would like some suggestions on what to look for.

 

Its probably a problem with the driver not being able to keep the pedal in the go position.

 

Just for you!!!!