Any ideas? The exhaust has been sounding like crap for about a week now. I noticed one tailpipe seems to be sitting lower than the other, so I thought maybe it was an exhaust leak, but today the service engine light came on, so I hooked up the sct and got "P0171 - System too lean 1". I did a quick look to see if anything was obviously wrong, but everything seems to be still connected properly and no obvious cracks in the hoses.
I haven't installed anything lately, the last thing was the h pipe, but that was about 6 or 7 months ago and it's been running fine until now. Here's the list of mods that I think might apply, in case that's needed:
Mac cai
accufab 75mm tb and plenum, mac o/r h pipe, flowmaster 40's, sct xcal 2 with 93 tune.
Thanks for any help you can give me...
I haven't installed anything lately, the last thing was the h pipe, but that was about 6 or 7 months ago and it's been running fine until now. Here's the list of mods that I think might apply, in case that's needed:
Mac cai
accufab 75mm tb and plenum, mac o/r h pipe, flowmaster 40's, sct xcal 2 with 93 tune.
Thanks for any help you can give me...