Holley/Demon Carb stumble

PRH said

Watched it again.........

What it seems like is, it’s like there are two stages of stall.
You floor it, the car drives off the line at something less than 4200, then the motor gets a little burst, and goes to what sounds like about 4200.

But, what you want is to have the motor instantly jump to the 4200..... right at the hit.
It doesn’t sound like that’s happening on the video.

Click to expand...

I honestly can’t hear it well enough in the video. I need some better ear buds because the ones I have suck buttermilk.

I have no doubt what you are hearing, and usually that means the converter is too tight.

We just did a 5k 8inch PTC for a street drive truck. He had some unknown 10 inch (IIRC) 3500 deal in it before and the 8 inch drove better around town than the 10 inch and the 5k stall made it move.

I’m going to listen again and see if I can catch it. May not be the ear buds. I’m better than half deaf.