Black soot all over back of car after stage 2?
#1
10-13-2018, 03:30 PM
#3
10-14-2018, 12:34 AM
It looks kind of soot or carbon, did you get BBQ mode, or increased pops and burbles? I don’t know, it’s not something I’ve experienced on mine, other than the soot/carbon that coats the exhaust tips on all R60’s. I’m thinking it’s probably something similar to that. But I am fully catless with a tune and have not had that happen.
#5
10-14-2018, 11:15 AM
It looks kind of soot or carbon, did you get BBQ mode, or increased pops and burbles? I don’t know, it’s not something I’ve experienced on mine, other than the soot/carbon that coats the exhaust tips on all R60’s. I’m thinking it’s probably something similar to that. But I am fully catless with a tune and have not had that happen.
#6
10-15-2018, 06:24 PM
Then I’ll bet that’s what it is. When it’s in sport mode the ECU pumps more fuel in on the exhaust stroke to send unburnt fuel into the exhaust manifold to detonate there, that’s how they pop. I’d imagine that it’s just unburnt gasses or a bit of carbon soot.
#7
10-15-2018, 07:15 PM
Doubt it is soot unless when idling you see black exhaust wafting out and up from the exhaust outlets.
Had something similar show up on my Porsche 996 Turbo's rear bumper surfaces. It is tire dust.
You should have seen the amount of tire dust in my Boxster's engine air filter, an air filter I admittedly left in service too long -- lost track of miles -- to the point it was affecting the engine. Removed the filter element from the air box. Removed the foam layer. Turned the filter upside down and smacked it on the sidewalk. Every pleat left a black line of tire dust on the sidewalk. The engine perked up some after the new air filter was installed. The old air filter was getting full.
Had something similar show up on my Porsche 996 Turbo's rear bumper surfaces. It is tire dust.
You should have seen the amount of tire dust in my Boxster's engine air filter, an air filter I admittedly left in service too long -- lost track of miles -- to the point it was affecting the engine. Removed the filter element from the air box. Removed the foam layer. Turned the filter upside down and smacked it on the sidewalk. Every pleat left a black line of tire dust on the sidewalk. The engine perked up some after the new air filter was installed. The old air filter was getting full.
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#8
10-16-2018, 08:13 AM
But if nobody else is experiencing the same thing? I just want to make sure this isn't some kind of early warning something is wrong with my car
#9
10-16-2018, 10:48 AM
You never know, it may be worth looking into for piece of mind if nothing else. Tire dust, I don’t know, it’s possible. Could just be something that was on the road surface as well. But I still think it may just be unburnt fuel or something like that. But seeing as how nobody else is really experiencing this, you may want to get an opinion from the dealer or a good Mini tech.
#10
10-18-2018, 08:26 AM
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