Got this Shelby in with some power issues that were traced to the catalytic converters being spent. The car already had a custom cat back exhaust system and since the customer wanted to upgrade to Kooks Long Tube headers; he went ahead and ordered their new “green” high flow catalytic converters. This GT500 can breathe right once again and makes incredible power.
Out with the old manifolds and worn out cats
In with the shiny new Kooks long tubes and “green” catalytic converters.