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Re: baffling turbo..
if the manifold is glowing hot then i would guess that this is the red dust
coming out of the exhaust. @ my office we use Stainless Steel tubes for
converters & after you run them for a while @ 700 Deg C you start to get
scaling when this happens it starts to rust & flake out. i would imagine
that this is much easier in a car exhaust than in my instruments as the car
sits out @ night & gets water condensing in it. i bet when you have it wide
open that the motor is running lean (as the other gent suggested) & now you
are seeing the rust coming out. if you can monitor the O2 sensor check it
out & i bet you are going to see it drop off. to check this theory, turn up
the fuel pressure a touch & see if it goes away (or runs a little better).
how many miles on it? if over 100K change the fuel pump & call it a day
BW
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