17133, RE: Turbo is now installed and runs right!!! Posted by Super20G, Dec-31-69 06:00 PM
Even if your downpipe is 2 1/4'', having a bigger exhaust is always better, expecially on a turbo car. Eventhough your downpipe would be a little of a bottleneck, making cat-back 2 1/2 or 3'' will free up the backpressure more than if you stuck with 2 1/4''.
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