Novarossi p5xlt sputters and dies
Hello, i recently bought a brand new novarossi p5xlt, it is the newest one with the black head and the 3 needle carb, i am on the 5th tank of break-in but this has been happening since the beginning. So, when i start up the car on the starter box it will rev easily and wont die however if i give it full throttle very quickly it will act like it's running out of fuel. If i put the car on the ground and try to drive it past 1/4 throttle for about 4 seconds the car will sputter and die. There is a pretty big amount of smoke coming from the exhaust, more than my previous race engines so i do not think it is lean. I am running 20% vp fuel with 14% oil in it. This happens only when the car is on the ground.
My novarossi c6 plug that it came with stopped working so i put in a o.s p3 ultra hot which made the idle significantly better but any help would be appreciated since my car is undrivable rn. Thanks