I have harvey super edition headers and wandered what power I cvan expect fron a md 321s
Can youi help

 

I have never heard of Super Edition headers.
The power output will depend on how good your turbo is, your supporting mods and not just the headers, the fuel in use and the mapping. With a complete spec someone may wish to hazard a guess at your power output but others mght consider that futile because different rolling roads, certainly different types of rolling roads will give different output figures as will road dynos depending on the information inputted.

 

I thought they max'd out at 400ish swap em for RCM