x-pipe and exit in front of rear tires?

I just cut the over the axle exhaust off on my /6 car, and put a turndown right off the muffler. I actually think it helped with performance, plus it is louder, which wasnt an issue with me. Im thinking it flows better this way, and is better at getting the exhaust out quicker, with much less back pressure.

If you are going towards a race car, turdowns off the mufflers. Show car, cruiser, exhaust all the way out the back.

On the muffler : I have been a Flowmaster 40 series fan forever. In my opinion Flowmasters have the best sound of all the mufflers. Having said that,with there chambers flow comes to mind. I believe it has been proven that Magnaflow with there straight through design flows the best. So on my next car I will be going with some Magnaflow mufflers. H-pipe X-pipe there both good, X is suppose to flow better.