was wondering if anyone has any clue of whats going on i have 99 ss cam stall and 75 shot i was running 7.oos on 1/8 mile with 1.55 60fts....well my last 2 passes it feels like its not hitting at all my last pass was a full bottle because i thought the one before that was out of bottle but did the same thing on my last pass and only went 7.26 i run 7.38 on motor so thats just like 1 tenth when i usally get about 3-4 tenths i checked the pills and i took the plate off and hit the button to make sure it was spraying and it was so i have no idea whats going on ...i dont know what bottle pressure was but i it was the same as all the other times...any ideas guys, what should i check out this is bugging me

 

You need to know what the bottle pressure is. Did the car feel like it was running strong, then nose over? Could be a few things if that is happening. Especially if you're running a FPSS.

 

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You need to track weight used per pass. That way you will know if you are firing full power.
Could be a clog, and you're only getting part flow. Looking at the plate can fool you.

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well from the start it fills like im on motor like its not spraying at all but i can feel it spraying just not hitting hard at all

 

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Again, a clog could feel weak. Are the plugs super rich all of a sudden?? Less N2O than usual.
Could you have a delayed trigger issue?? Hitting after you're already rolling??

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I wired in a small indicator light to the power side of the relay(pin 87) that goes to the solenoids. So at least I know when the solenoids are getting power to spray. Helps me see if the system worked during a run instead of wondering "did it spray". I can see when my delays and my window switch works on my microedge.

 

Yah!... same thing biting me.

 

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The light is a good idea. I even have one on my Pro-Mod, because of all the trouble I had last year.
I took a mini warning light I had laying around & tied into solenoid feed also.

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found out my fuel pump is going out i will change and try again see what happens