Quote:
Originally Posted by btwilson86
Actually, you want to start out smaller and end up larger. After combustion you want a smaller diameter pipe to maintain the velocity of the hot exhaust gasses. The further the gasses travel, the cooler they get. When the gasses cool down, their velocity decreases causing more restriction in the flow. To avoid this, you increase the pipe size, allowing more gasses to occupy that portion of the pipe.
So, start smaller, end bigger.
Let the arguments begin lol  |
yeah true i was thinking backward (pressure rather than flow) my bad but the sudden increase in size gives you alot of backpressure so try and avoid it either way and the header looks like it will be fine the way it is the wrap is gonna void your warranty and make sure you keep an eye on it for corrosion the wrap is known for causing it