Well i dont know what to do anymore besides ask ive tried everything except changing nitrous kits. The run down on the car is it a Full bolt on stock bottom end 5.0 i just got it off the dyno yesterday car laid down 293 whp and 301ftlbs of torque it base lined 284 on the motor and went 12.6 @111mph 2 days before i dynoed it. So it runs good on the motor so i wanted to run a 125 shot on it i pulled out 5' timing as soon as you spray it car goes lean as soon as it starts to rev it starts poping ive tried rejeting it i even tried hooking the fuel line straight to the fogger after a 110 jet wasnt doing it on fuel. The soliniods work fine there on a relay and a window switch is set for nitrous to come @3000 rpm fuel pressure holds fine base pressure is at 30 psi thats were we set it to get the air fuels around 12.5 on the motor but like i said fuel pressure holds fine. A friend of mine suggested to me that maybe the fuel is not atomizing properly and is pooling in the plenum of the intake causing it to go lean and bang out. I just dont know what to do if anybody has ever heard of this let me know please

 

Btw im using NOS powershot soliniods and a Black Nos nozzle

 

Set your timing waaaay low, like 0* and see what that does.

 

I'd toss the nozzle in favor of a plate between the upper and lower intake. That intake dosen't repond well to wet flow.

 

do you have a good 255lph fuel pump..??

 

Yes the car has a 255 pump Portmaster i think that you are right you must remember i had the gt-40 intake manifold i guess i should have listened to you and got the edelbrock rpm II with the spray bar is there a certain intake manifold have to run?

 

Nitrous Express makes plates for just about any manifold

 

im getting a plate for my eldelbrock tommorrow for 200 bucks with selonids all i need is line and a bottle

 

i need a plate system...


the pill's they recommend are not always right.

and some nozzles/jet's tend to make your car lean out.


my kit, NX, makes the car go SUPER fat then lean out and make goo power, instead of a lean spike where you make big number's.