I had the original, g200 exhaust from invidia, it had no x or h pipe like the new ones. Indicia scraped this design and moved to the x because it is better, I think you'll find you will have made the exhaust quieter, the x pipe ads more burble and an h pipe or balance pipe sounds better, but doesn't perform as well. If it was me I'd take it back and get them to put a balance pipe in. Can be a smaller narrow gauge pipe, doesn't need to be same diameter. I did alto of research when I designed my own, and there was a reason I put the x pipe in.