There are two different versions of the Tracy Sports header. The TS-02 differs a lot from the T1R header. The one that appears to be more widely available is the one that you are saying T1R cloned

 

I have a std Toda header and I've noticed a difference but then again I also installed my Spoon N1 tp/exhaust at he same time. I noticed a better slight throttle response even with the silencer on. Once I get it tune I'm sure I'm gonna notice a huge difference well hopefully But $820 for all three items seems pretty reasonable