Originally Posted by
Roelof
The engine will be less pressure sensitive. Going back from top rpm to idle in a normal situation will still give a pressure boost resulting in a rich bottom end when giving throttle again. Trying to lean out can give other problems.
Lowering pressure will fiter out those boosts giving a less rich bottom end without going to lean.
What's the exact part and where can you buy it? I would like to experiment with this a little bit to see how it really behaves....