[Jay335i]

Getting JB4 and downpipes. I know the JB4 takes care of any codes that will be triggered by having catless downpipes. My question is if I want or need to run on map 0 (bypass the tune or use BT tool), how do I work around the DME throwing a code for downpipes installed?

[themyst]

There is a stock map with CAN enabled (map 4) and one with CAN disabled (Map 0). I'm not sure if the DP fix is still enabled if you are running stock on the JB4. Worst case, you can buy the downpipe fix from Terry.

[Mike@N54Tuning.com]

Originally Posted by Jay335i

Getting JB4 and downpipes. I know the JB4 takes care of any codes that will be triggered by having catless downpipes. My question is if I want or need to run on map 0 (bypass the tune or use BT tool), how do I work around the DME throwing a code for downpipes installed?

Going to map 0 disables all CAN activity so autoclearing pauses while on map 0. The idea being you set to map 0 when going in to the dealer or using the BT so there is no CAN conflict. If you're worried about the dealer seeing catless codes, don't, because they can see the downpipes plain as day. Plus if you set to map 0 right when you drop it off they will never go through the 15min highway driving cycle needed for those codes to come back up.

Mike