R33 Gts-T Series 2 Black Dots And Dust On Rear Bumper After Driving

[SLY333]

Hey guys i have noticed when ever i wash my car and i go for a drive, i look at the back bumper and the boot and it is dirty with black little splatters and a blackish dust all over the boot and rear bumper, some people have told me that the car needs a tune and other people have told me that the car is running rich but really i got no idea what it is and it seems to get worse when boost kicks in as more shit splatters out the exhaust could any1 shed some light on this, how can i fix it?

[levinboy]

tune

black splatter and dust is soot and fuel, by product of combustion and richness

[zoidbergmerc]

car needs a tune and other people have told me that the car is running rich

Same thing.

Get a tune, problems will be solved and you'll have better fuel econ and MORE POWER!!

[SLY333]

definetly going to have to get a tune, also could it be my 02 sensor because ive heard of stuffed 02 sensors doing this?

[The Bogan]

Better to be a bit rich than a bit lean, too rich and you lose some fuel economy and a little bit of power, too lean and you lose your motor.

Mine runs a bit rich and its safe.

[zoidbergmerc]

definetly going to have to get a tune, also could it be my 02 sensor because ive heard of stuffed 02 sensors doing this?

Yep, and AFM.

Replace the o2 Sensor and clean the AFM and see how it goes.

[PM-R33]

What is done to the car? Does it have a cat?

[scoot84]

if your running standard internals and turbo upgrade with a management system or piggy back your tuner probably set it rich to prevent damage to your motor

[SLY333]

What is done to the car? Does it have a cat?

all its got atm is an Apexi pod filter and a jasma cat back exhaust with the standard cat on