I'm considering a dual setup for my iroc, but was concerned about how I'm going to route the tubing and about unequal tubing lengths running from each side. Basically, my question isn't about how to run the tubing but if the disproportionate lengths would significantly hurt performance?

 

The unequal lengths AFTER the collector won't matter much at all, at least at that small difference won't.

 

Thanks if all goes well I should have excellent ground clearence by runnin both through the stock location and over the rear axle.