Totally transformed the drivability of the car for me. Having more midrange makes it a lot more fun in day to day traffic. It also resolved some throttle mapping qualms I had with the DBW.

 

They make K-Pro. It's not cheap as you have to swap over the valve cover and a number of sensors as well. IMO, not worth it for bolt-ons, but a great option if you're planning to get wild with it.
After it's all said and done, AEM is cheaper, but you won't pass emissions with it if your state cares about that sort of thing.

 

Ahh... that was the one I was talking about! (I forgot the name)

 

I would've remembered if it was AEM; as that's one of the most popular stand-alones. All I remembered, was that it was kind-of an obscure stand-alone (edit: I see it was just a piggyback ecu unit)...

Found out it was the Karcepts tune + Greddy E-Manage bundle... as spaded.racer has posted.

 

Anyone with an 06+ who enjoys driving their car is doing themselves a disservice by not putting a test pipe / HFC on their car and tuning with a flashpro. Would recommend Gernby e-tune. He's the only tuner I've worked with that knows how to tune part throttle vtec. Other tuners just make it an on/off switch with full throttle. The driveability of the car significantly improves, there is more usable power under the curve, especially in the mid range, and the powerband is extended (usually from about 4k-8500) and shifting at redline doesn't land you out of vtec anymore.

If you're gonna do anything, flashpro and cat removal is the way to go (for performance)

 

 

Which flashpro or tune works with the 04 s2k? Bone stock .

 

None. You need a piggyback or full standalone engine management.