I've heard that some people have experienced a "check engine" light once they have installed their X-pipe w/high flow cats. Has this happened to anyone on this forum? If so, how did you go about cancelling out? I'm going to have a dyno tune & sport chip [brand to be named when I decide which I prefer] soon. Will this get rid of that light if it should come on? What about the headers? I've a set of Bassani ML on order.
Posts: 2045
Joined: 5/22/2003 From: Newport News, Va Status: offline
if you have the cats you should be ok. its the pipes w/o cats that trigger the check engine light, and require the MIL eliminators. i havent gotten around to getting them, was winning them on ebay for 35.00, forgot about them and in the last 5 min some punk outbid me.
I don't know what year your car is but generally you don't need to worry about it on pre-obdII vehicles. OBDII was mandated for MY96 and newer.
On my '01 Subaru I started throwing catylist inefficiency codes with just the header going into the stock cat - too much temp drop through the header (no heat shields). The problem didn't go away when I added a high flow cat. It wouldn't be a concern to me if my pocketlogger was working , but for some reason it refuses to connect to my car now.
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check engine light (exhaust) - 
