Re: Herrods single 3", high flow cats and headers:
Thats a pretty decent gain, I got 5 rwkw from just adding Genie extractors to my 3" zorst with standard cats. (The genies have a slightly larger primary than the Pacey's from what I remember)
FOR SALE...... $22,990
AUII XR8 (200kw), Silhouette, Body Kit, Hawk Wing, 5 Speed man, Premium Brakes, Premium Sound, Genie Extractors, 3" exhaust with twin 3" tips, K & N filter with air scoop, Polished Inlet manifold, MAF & 70mm T/B, T series interior handles & Gear stick ring, Chequer plate, Momo Pedals.