I need help, I'm trying to help my buddy tune his ecu. Basically we need to bring his ecu back to stock and remove some fault codes. I've been doing research for a few days now and I haven't found anything that will work for free or extremely cheap. Any help is appreciated.

 

Nothing is cheap on an infinity or anything that runs this drivetrain, properly programming the ECU is not done for free or cheap unless your best friends with The owner of a performance shop, And even then I think you still have to pay around $800 for the licensing on the software you need

 

What was used to tune the ECM in the first place?

 

There is nothing free or extremely cheap.

 

My 06 G35 coupe has a k&n intake that looks like it could be factory, was this an option from the dealer? And if not, anybody know somewhere in the Tacoma area I can take my G35 to find out if it's been tuned or needs to be..