I have 126,000 on my 95 GSR ive replced the main things belts plugs wires clutch cap and rotor. But I still have one problem when ever I run past 6000RPM it spits out a bunch a crap that looks like carbon particles because it sticks to the rear bumper so if anyone has any ideas plaese let me know thanks

 

what color are the particles that come out? It might be a blown catalytic converter.:dunno:

 

The particles are all black like soot. So does that help?? hopefully thanks