Gents bot a MCS 2007. Fully tricked out. have been driving it for just under a year. when it pulls it pulls great but triggering codes after 10 miles.

alta intercooler, cai, magnus tuned, catless ragazzon DP..., coilovers, swaybars etc...

Having many problems with my rear 02 sensor bank1... tripping every code possible....141,2a74,2a7f,2a56 (brand new 02 sensor btw)

1) is the catless ragazzon dp 2.5' or 3'...
2) is there a mapping solution (even mapped w alta software to no avail)
3) should i just install a cat post the dp as a for instance... http://www.andysautosport.com/mini/2...verters/pypes/ 3" with the o2 sensor fitting built in.

Pls pls pls help.

 

What tuner/software did you use? You are going to get the exhaust code until your tuner disables the o2 check.