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Walbro and test pipe=black $hiT on bumper

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Old May 26, 2006, 07:21 AM
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Walbro and test pipe=black $hiT on bumper

Will the test pipe and richer fuel cause me to get that black residue near my exhaust?
thanks
Old May 26, 2006, 07:23 AM
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because of the test pipe
Old May 26, 2006, 07:23 AM
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take out that claybar, u will need it.
Old May 26, 2006, 07:25 AM
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mine hasnt started doing it yet and my test pipe has been on for about 6000 miles
Old May 26, 2006, 07:28 AM
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Originally Posted by AC556k
Will the test pipe and richer fuel cause me to get that black residue near my exhaust?
thanks
you betcha, I have a CF cover to protect the bumper around the exhaust because it was getting dirty from all the soot and fumes
Old May 26, 2006, 07:30 AM
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ahhhhh the niceness of having a black evo, lol
Old May 26, 2006, 07:30 AM
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yea man its normal. no biggie.
Old May 26, 2006, 07:40 AM
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Mine gets carbon deposits on the rear bumper and the car is 100% stock
Old May 26, 2006, 07:42 AM
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me 2 ^
Old May 26, 2006, 08:03 AM
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get urself an exhaust heatsheild!
Old May 26, 2006, 08:13 AM
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Its just ONE joy of owning a turbo car...mostly an EVO in particular Look at the bright side, its ALOT better than white smoke.
Old May 26, 2006, 08:15 AM
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My bumper has actually melted around the exhaust outlet, there are little ripples in the plastic around the edge.
Old May 26, 2006, 08:48 AM
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I do not have this problem at all and I run a test pipe and pump. Why? because I got an exhaust that has a tip that extends beyond the bumper by 1.5 inches. Also the tip is the same diameter as stock. I have no soot and no melted bumper.
Old May 26, 2006, 08:56 AM
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I would think you would be running richer with the walbro since it is sending more fuel than factory.
Old May 26, 2006, 12:20 PM
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even if the pump is rated at a higher lph it shouldn't send more than what is needed. the computer should still control how much fuel to deliver.


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