Just checking I just installed a Flomaster 40 series with Magnaflow 3-1/2" tips and a Roush cold air intake and I have no carbon build up at all in the tips. I did the same system on my 07 Dodge Ram with a Hemi and had a black film of carbon in the tips and overlapping to the outer edge, the air intake was a closed box by Truflow oh and the truck Im talking abought here is a 2008 FX2 Sport. Any ideas I would think no carbon build up would be a good thing right ?
Thanks....