Had some exhaust work done at Mufflers and Pipes on Sunset in Waukesha in June. I had a downpipe, cats, x-pipe done on a 4.6 Ford. Couple days after I got a CEL for running lean. I find out that their shitty welds were most likely done by a three year old. I called them about it and they will not fix it since I'm telling them about it a month later. For the past month I've been trying to figure out why my car was running lean and throwing codes changing out O2 sensors, spark plugs and dataloging with my SCT livelink, ect, only to find it now. Piss poor bull shit. Beware of these shady fuckers!
Pictures: