You can still do the header after doing the reflash. I'm pretty sure they say that on Hondatas website too.
I dont know exact numbers because I didnt dyno my car, but I did the exact mods you listed. I can tell you that they added a substantial amount of power, and especially throttle response at higher RPMs. I think the Header is very important along with the reflash. Of course, now I want to do the end user tune to add even more powerWhat's up fellow tsx'ters new here thanks for the add.
Have a question . how much HP can you net by having the re flash, intake, headers, and exhaust?.
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