ok ive done the research just want a confirmation on my findings. i intsalled my downpipe 2 weeks ago and i just barely got a cel (p0420). so after research i learned i need a cel fix or i can just drive the car with the cel on right.? my car isnt in limp mode right? thanks for any feedback
a fix is good, an AP is better. it specifically eliminates that code (as well as others) that are caused by tbe. i had my tbe on without EM for probably 12K before the cel went off, then everytime i cleared it it would come back within 50 miles. the AP fixed that and more.
i put a catlees down pipe on my car and got the same code it a bad o2 sensor so get a new but before you do go on ebay and get a o2 sensor extenstion it pulls the sensor back so the sensor dosent pick up the bad gasses but still gets a reading i did this on my car and im now check engine light free, and the rear o2 sensor is relativly inexpensive un like the front
Boost creep can not be tuned out. Only lessened. You either need to change the pill size or get a 3 port BCS to fix the problem. Its a mechanical issue. Just make sure you have it set up correctly and protuned for if you go the BCS route. Changing the pill will not require a protune.