So realistically My build plan is 400HP street , would TTI or Dougs be over kill or is it " to each his own ". I don't mind putting out the money if its called for but at my HP would it be like a status thing.
Depending on the build details, the TTI may provide better low and mid range torque because the step up in the primaries may provide some anti-reversion.
IMO, keep this in mind when working on the engine build.
Depending on how you use the car, it may be worth buying the headers uncoated and after checking fit, send them to a shop that plazma sprays them. Swain is the only US company that advertises they'll do headers, but its an industrial process not exclusive to them.
