Tuning from stock
 

Hey guys I have a 2009 gsr Evo X. I would
Like to know what can I do more to gain more bhp.
I already added a typhoon air filter and a complete new
Hks silent hi power exhaust with the down pipe and it's extension kit.
I also upgraded my waste gate actuator and added a 3 way solenoid. I also did
A remap on my original flash ecu. So now I almost reached 390 bhp. I dunno what's the next step for more power and torque. Any help??
Ps: I prefer Keeping my engine original as not opening my engine up for major changes. :helpme:

Assuming your tune doesn't have much room for improvement: upgraded intercooler, UICP, LICP, fuel pump, injectors, and then a bigger turbo.

Intercooler and pippings, 3port, bov -- then you can set up for a bigger turbo with bigger injectors, fuel pump, fuel rail, etc. OR, just run methanol injection with the stock turbo.

hey guys i wanna replace my stock radio with the built in dash touch radio of the mr. any help?

by the way i have the fosgate radio but without the mmi touch screen radio

There is how to here on the Audio forums. Just a heads up when asking simple questions like you just did, the search function works and has been known to provide answers{thumbup}