I cannot comment on how the Berks mesh with a Nismo cat-back exhaust, but I have to say that installing the Berk HFCs on my Z was the best bang for the buck mod I have done so far. The volume under 3,000rpm was slightly increased, but extremely quiet and near stock levels. However, after 3krpms is a different story... The car really opens up and the overall volume level probably doubled over stock. The car sounds great and in my opinion, the cats are the most restrictive component in the whole exhaust system followed by the Y pipe in the non Nismo Z.
I have yet to read about a CEL being triggered by Berk HFCs; they have a built in defouler that has been fine tuned to the point where CELs are not going to be an issue.
__________________
-320whp / 259wftlbs-
SP Rays -- RE-11s -- SpecialtyZ Tune -- Swift Springs -- Stillen 25R Oil Cooler -- Stillen G3 Intakes -- Berk HFCs -- F.I. 12" CBE -- Stillen Sway Bars -- Es14 Spring -- INGS+1 lip -- CF Spoiler -- GTR Start Button -- VLED Parking Lights -- PWJDM V2 shift knob
|