After your first drive. You will get a cell. Just reset your ECU by pulling your "back up" fuse (#16 I think .Just check your manual to make sure) and putting it back.

 

Hmmm, I never got any codes after installing mine.

Idle and 1st are virtually unchanged, but from 2nd on the exhaust note sounds fantastic! I can't claim any increase in power or gas mileage, but it's worth it just for the sound.

 

I finally got it installed. Took me about 5 hours to do a 90 minute job.
I cant say for sure there is any HP gains but it feel more responsive at hight rpms, and definately a bit louder.
One problem that I had was when I drilled the 5/9 dia hole in the intake tube I was using a paddle bit & when it broke thru it poked a pinhole in the other side of the tube. I put a small piece of tape over it until I find a way to patch it correctly.

 

why didn't you use the extra hole that already existed on the intake?