[TRZ06]

Originally Posted by travislambert

I guess me and the engineers at GM just have active imaginations. Call it what you want, but the folks at GM actually do design based on airflow modeling and testing. If there were truly no difference GM would be using cheaper and more universal muffler designs, but they don't. That should clue you in that there is a difference.

I can certainly believe there isn't much info online about airflow issues with aftermarket exhausts, but that doesn't necessarily mean the problem doesn't exist. Most people don't notice things like that.

I absolutely believe the difference is negligible for the majority, but at the same time I bet it isn't negligible at the 140+ speeds I regularly hit.

Dumping on a vendor thread was not my intention. I'd be a buyer for a lighter design that maintains proper airflow, and I was curious when I saw this new system.

Sorry to interrupt the barking and howling about the sound of the exhaust in the video. Please carry on.

I don't doubt there are airflow changes, but like you said, I think it is negligible. Worst case, it's a good excuse to get a custom diffuser