V-10 & Black Exhaust Pipe?

[wawii]

V-10’ers,

I’ve noticed (after 8,500 miles) that the interior color of my V-10’s exhaust is black. As these trucks are computer controlled to run lean I would not expect to see a black exhaust pipe. The only engine modification I’m running is the K&N air Filter.

What are the rest of you V-10 owners seeing?

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Thanks,
Will

2000 F-250 SD Crew Cab, Short Bed, Lariat, 4X2, V-10, Auto, 3.73LS
My Truck at the Dealer ----- My MPG File's ----- A Super Duper Crew Cab
Rear Wheel HP (Stock) ----- Rear Wheel TQ (Stock)

[DRAGON]

Mine was black at 10,000 Mi. I also have a K&N.

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John's 1999 F-250 SD XLT(607A) 4X4(55R) CC(W21) V-10(99S) SRW LongBed(LWB) Auto(44E) 4.30LS(XC3) Blk/Grey(954-UD-Z3) 4WABS(67B) ESOF(213) HD Susp(674)(531)(632)(86R)(53T)(18L)(592)(924)(768)( 433)(54Q)(90P-2)(58K)(T4R)(64S)(948)(86R)(515)(52N)(903)John's Awesome F-250 SD Web Page

[2manytoys]

I do not have my truck yet but I can tell you that it is normal for the inside if the exhaust pipe to turn black. When you step on it you are dumping a more fuel in than can be burnt. The cat. will not be able to re-burn all the fuel under WOT acceleration. Not to mention that the fuel to air ration is always changing. The computer is constantly cycling between 10 to 18 air/fuel to come out with the proper average of 14. So when you look at the average the truck is running a perfect fuel to air ration, but in reality it is cycling, rather quickly, between rich and lean whenever it is not in WOT situation.

Later, G

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So to be owner of '00 250 CC LWB 4x4 V10 (needed to tow the car and transport MTB racing team)
Also owner of '95 Cobra (modified for autocrossing & road racing)

[wawii]

2manytoys,

I would expect the black if I was always getting on it. But even after 600 miles of soft peddel and 16.5 MPG drive, it is still black. On other vehicles where I run it soft and get high MPG's they always turned white.

Was just wondering if mine was like everyone eles's.

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Thanks,
Will

2000 F-250 SD Crew Cab, Short Bed, Lariat, 4X2, V-10, Auto, 3.73LS
My Truck at the Dealer ----- My MPG File's ----- A Super Duper Crew Cab
Rear Wheel HP (Stock) ----- Rear Wheel TQ (Stock)

[Eric Shaunfield]

Don't worry about it, I drive 50 miles to and 50 miles from work five days a week in my truck and the inside of its tailpipe is black. Its a '98 Chevy K1500 with a 5.7 thats well taken care of. I change the Fuel Filter every 15,000 miles and the oil and filter every 3,000 miles. Even though fuel-injected engines are much more efficient and precise than carburatered engines a little soot is gonna be left over. Nothing to worry about unless you get a check engine light or notice its putting out smoke when you give it gas. Other than that just wash out the tip of the pipe when you wash the truck and try not to sweat the little stuff.
-Eric