If you have read the previous posts.
You will find all with SVT's that tried have the drivability problems. The further you increase it the worse it gets.
However with that said; I personally liked mine with the secondaries pinned open.
But don't know if I'd do it for day to day driving (Only helps from about 2500 to secondary activation and during power shifting) But you do lose some noticeable cruising and normal driving torque.
The std duratec's all seem to perk up the bottom end above 2000-2500 until secondary activation (3800)
