So I have acquired a mandrel tube bender and over the next weeks, months I will be doing R&D on building a race exhuast for my own purposes but if it puts good numbers down on the dyno I would be happy to remake it for members of G35driver. They will all be cat back systems without mufflers(could be added if wanted) and run as a dual pipe design.

I will be trying out 6 examples at first that all follow the same shape just the exchange of pipe sizes and cross over designs.

1 - cats to 2.5-3" increase, 2 straight through perforated resonators(3"in, 4" OD, 12" long), No Mufflers, No cross over

2 - cats to 2.5-3" increase, 2 straight through perforated resonators(3"in, 4" OD, 12" long), X-Pipe, No Mufflers

3 - cats to 2.5-3" increase, 2 straight through perforated resonators(3"in, 4" OD, 12" long), H-Pipe, No Mufflers

4 - cats to 2.5" no increase, 2 straight through perforated resonators(3"in, 4" OD, 12" long), No Mufflers. No cross over

5 - cats to 2.5 no increase, 2 straight through perforated resonators(3"in, 4" OD, 12" long), X-Pipe, No Mufflers

6 - cats to 2.5 no increase, 2 straight through perforated resonators(3"in, 4" OD, 12" long), H-Pipe, No Mufflers


I will be adding some CAD concepts of the designs to give you a better understanding of the systems soon.

Any experienced input will be welcomed, I will be collaborating with my mechanic who is a 30 year Nissan race veteran, as well as my neighbor who has a collection of 18 self restored old muscle cars in his personal work shop for advice.




Also anyone with a 2009-2011 Mercedes S55-65 will be in luck as I will be making a race system for my S-class as well.

Systems will be produced in either more cost effective aluminized steel or high grade true stainless.