he gutted his and throws a CEL after 250 miles so he resets the ecu to avoid the lightirv_usc said:umm the xerd piping is bigger than our stock piping.. so you will get more flow there. there are people running gutted stock pipes, why would you think that causes a CEL?
also why would you reset your ecu every 250 miles? the car will never learn your driving habits..
It works well because of the straight pipe you added. Very stealthy.sun said:I gutted my stock Y pipe and it works well. As for the chamber issue, I welded a pipe inside so the flow isn't disrupted. I don't get a check engine light.