Will the test pipe and richer fuel cause me to get that black residue near my exhaust?
thanks

 

because of the test pipe

 

take out that claybar, u will need it.

 

mine hasnt started doing it yet and my test pipe has been on for about 6000 miles

 

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

 

ahhhhh the niceness of having a black evo, lol

 

yea man its normal. no biggie.

 

Mine gets carbon deposits on the rear bumper and the car is 100% stock

 

me 2 ^

 

get urself an exhaust heatsheild!

 

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.

 

My bumper has actually melted around the exhaust outlet, there are little ripples in the plastic around the edge.

 

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.

 

I would think you would be running richer with the walbro since it is sending more fuel than factory.

 

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.