I meant to keep up back pressure to keep from burning up valves and other parts.....any pics of the arata system? how much are they running...hows the performance

 

im sorry but i still dont know exactly what you mean.. do you mean how can you keep back pressure up with a straight pipe?? you cant..

i dont have pics of my arata on hand but imo its one of the top performing exhaust judging by the design..