Rakey said:the manifold is the main part of the exhaust system that restricts the flow, the standard kit is a real bottle neck as it meets the exhaust
The manifold is a good mod to do, it really will free up your car, and having seen Dunc shift the way he does (nothing to do with his linen suits) it is well worth it.
Do you guys think there would be positive and worth while gains if one was to change to manifold and retain the OEM cat-back system?
