Hey Guys,

I have done a lot of searching , and I know that a 2 into 1 is a way better performing exhaust than 2 into 2. I have an SMW 113ci engine, and i currently have my old V&H straight shots on it. My question is, how much worse is a 2 into 2 vs 2 into1? Does anyone have numbers? Having spent $4800 on a new motor, i need to hold of an a new exhaust for a bit, atleast till its broken in. Thanks for the help guys.

 

You should ask SMW for their recommendations as I'm sure they will be able to give you very specific answers. I have a 107" and have run true duals and a 2-into-1. I assume by 2 into 2 you mean separate pipes? If so what you will find is that they will give similar power to a 2-into-1, but the 2-into-1 will give better low/mid range torque, where most of us ride.

I would guess your 113 will be fine whatever you put on it, as it will have plenty of performance, but if you are looking for a new exhaust system to get the best out of it get a 2-into-1. My sigpic shows my SuperTrapp Supermeg. I think you will find SuperTrapp make 2-into-1s for all models.

An unexpected bonus I found is that my bike now runs much smoother and sweeter than before, as well as pulling much better from low rpms. With both systems I had my bike set up on the dyno by the same tuning shop.

 

Thanks for the advice. I will definitely contact SMW, I don't know why I didnt think of that earlier. I know that i want to run a 2-1 in the long run, Im sure it will be supertrapp, Fat cat, or Pro pipe. I will let you know what they say.

 

The beauty of the SuperTrapp is that you can tune it for sound, using their stacking baffle system. Many pipes are too loud for my liking, but I really like mine, plus the performance it gives!

 

Here is my dyno sheet with a stock ultima 113 and d&d fat cat exhaust. 100hp 107tq not very impressed.

 

How many miles on the motor?

 

Ya , not too impressive for a 113. What is in the motor as far as a cam set? What compression?

 

I had a 127ci from smw and gained 15hp 20 tq over my street sweepers . Those v&H sound good and run like **** robbing hp
I ended up with borezilla 2 into 1.