code help

[311mp3]

i have a 06 MS6 so i put on a DP with a high flow cat in it. threw code 421 (cat eff.) so i went into my access tunner racer managment system and turned off code 421. light went out. now code u0121 (buss communication error) is on. how can i turn this code lite off?

 

[zinger002]

run stage 2. the code will come back but there will be no actual code associated to it. the cel will just be there. my dh is set to alert me when cel's come and this has never once set off the alarm.

at least these are my findings.

 

[311mp3]

im running a custom map, i'm just worryed about passin emissions. i live in PA. i figure worst case is i have to put the factory dp on and go to stock map for emissions.

 

[zinger002]

is it based off of the stage 2 ots maps?

 

[311mp3]

yes