I bought a Jardine tuned header for my 74 Triumph Trident back in 75 it wasn't worth a flying F know matter how I tried to tune the bike it always ran worse than the stock system. I sent them a letter looking for guidance & instruction for tuning the bike and I never got a reply. I saw them in Daytona at Speedweek at the big bike show in 75 and I had several questions for them mostly why didn't you answer my letter and why do you make such a big piece of $hit ? They weren't even interested in my problem they didn't seem to care great customer relations.
Mark