The baffle plate is shaped in a such a way that there are two
prongs that protrude on the lower base of the plate. This is designed
to prevent the plate from flying off and going into the downpipe and
into your cat. I will take about 200 miles of noisy, rattling driving
before you will have degraded the plate enough to have it release from the header collector. I think it is ok to remove it, and run
4-1, should be fine. Would like to see the numbers on the dyno as well. I guess you got one of the first off batch. (no welds along the baffle plate)
Here is a pic of when I got my header changed out. You can see
how it degraded and wore at the lower edges, curved as well.
It will be hard to remove if it is near new. You will have to cut it
with a torch, or some method. You can always play roulette with
it until you have worn it like the above pic, then bend the lower
tabs in to remove it. (no fun either way) hth
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