I believe that Lubeowner said he is around 30 or 40 hp less but I don't remember for sure. With what we are trying to achieve with Project Underdog, I need as much help as I can get!
Do you know of anyone trying smaller twins and have any success?
Grandrock or somebody similar needs to do a true to form dyno test. No BS. Just the truth.
why not make your own setup. you don't need to buy a cookie cutter kit. just larger dia pipe for the y pipe since that is the restriction in the kit, and just have it be the same size as the stacks you want to use. I.E., a 4"dp to the 6" y-pipe to 6" stacks...... just me $.02
So, the loss isn't based on size or splitting the flow, it comes from redirecting it, via bends and what not.
Yeah, I think it was Diesel Power. But they tested normal exhaust not stacks. They, also, didn't get into single tail pipe vs dual vs side exiting etc.
Since I'm a 6.0, I'm pretty limited to size of the exhaust pipe. Our set-ups make it extremely difficult to get anything larger than a 3.5 down pipe in there. The only people using larger, are custom welding the down pipe together and move it. Since this is going to go on Project Underdog, I need something mass produced not a one off setup. There are very few readers that are going to want to or have the ability to do a one off setup with the cab off.
Good information and I'm going to keep working on it.
I don't know what size we will end up with. Part of me says single 4”, but that's a little small for a single stack (from a looks stand point). As I had mentioned, the wife wants dual 5" stacks. I need all of the hp I can get trying to compete with the Duramax and Cummins powered pullers. My little 6.0 isn’t a big hp making machine.
All I know is this winter, I have my work cut out for me getting everything done that we want to get done in order to be really competitive.