you on stock bottom end? I see that its not 4G63. 26psi could possibly give you a sweet new window in the block

 

I have an evo 8 bro 4g63 with an evo 9 turbo

 

Never heard of a stretching FPR vac line skewing the AFR points, but glad you fixed it man. Odd.. One way to check to see if you correctly flashed the Tephra ROM is to read from the ECU like you were doing, and then look under info tab. Once under the info tab, it should have the correct ROM id (ie 96530706 etc...). If you have the correct ROM id you should have big maps, and the rest of the Tephra features.

 

So i should be running this rom id 96530706?

 

That's the universal Tephra V7 ROM for Evo 8's, so yes you can run it. You should check the Tephra page out and pick the one that fits your tuning needs. There's various stages/upgrades

 

Also to better answer your question about the ROM id.. That 7 I bolded previously, is a way to check if the Tephra ROM was correctly flashed to your car.

 

All i want is to remove the rear o2 and tune for 26 psi for 330-350 hp on 9 turbo, launch maps are pretty cool for 2 step lol