Thanks Holgram, I appreciate the legwork, I'm in the process of finding some time on a Dyno to help my find a vibration that Mazda refuses to recognize, but when I can make sure that the engine is good enough to mod and I get outside of the warranty, I'll get right on it. I see some of the stuff I can do now but the big stuff will have to wait.I wrote a huge reply with everything listed and while I was checking the legitimately of my sources I accidentally I had basically lost 20 mins of writing so I am crazy pissed while I am writing this. I too have the K & N CAI for something like 5.5 HP.I also own a custom exhaust system gives you much throatier sound opens up few horses maybe and little better throttle response. The second cat delete lets the car pull a little more but it's basically a requirement if you are looking to get the msds header, which I advise you do (I love mine). The awr racing engine mounts let you put more of that power down to the ground quicker and they make all three of them. The EGR re-route is something we all should seriously consider:DIY: EGR Re-Route (Re-routed properly pics page 5). You could also ground your throttle body for an added touch of power or go with something more proper like a voltage stabilizer:Voltage Stabilizers Can Increase Power And Torque - Fact Or Fiction - Import Tuner Magazine. I am seriously considering buying a sun hyper voltage system very soon. Upgrading your stock resonator with an high flow one also adds a little bit more pull. You definitely want to know of the advance timing mod:http://forum.mazda6club.com/engine-drivetrain/256072-advance-timing-mod-not.html. I have also looked at the dynotronics remap but you have to send them your ecu if you don't live close and I am a little worried that they don't have the car or vehicle specific info to work with such as altitude info or what all the new exhaust mods might have done. I would say throttle body coolant bypass but after seeing this I am not so sure:http://forum.mazda6club.com/engine-drivetrain/132355-why-not-do-throttle-body-coolant-bypass.html. Of course there is the head package by gude performance that puts all these mods to shame with a 45 HP increase for the 4 banger claim, on the phone. It's $1650 for the head package if you send him your parts or he can buy new parts for $350 and you can send him your stock parts back later and get the $350 back. I would love to get my hands on this baby! I think if there is some intrest we can get an underdrive pulley made by unorthadox racing for $250. And I am almost sure somebody made a crankshaft for it but I can't find it now. There you go bud all that I gathered about dyno curve mods so far.