I installed my about 1/2 in the dark. No problem so far knock on wood. Very straight forward. I haven't mess around with anything but changing map between 1-2. I bought JB4 cause COBB not available but will switch over later if it ever happen
My current mod is just JB4 map 1 with K&N drop in and CP, DP sitting in the garage waiting for install. You can feel the kick of map 1 but I will run map 2 soon. Also u can run map 2 without DP but need 100 octane. But I am not sure how much power different without DP though but only 1.5 psi I doubt big different. But DP will give you a bigger gain