zking44

I recently (in February) put a set of Ceramic BBK L/T Headers with the BBK catted X-Pipe on my car and had the exhaust shop fit some custom muffler deletes to complete it.

First the big question, I'm thinking my car is running too rich. Why? Because my mpg went waaaaay down getting around 15.5 at least thats what my car is reading plus its a noticeable decrease. Im noticing a decent ammount of fuel smell when I accelerate and there is a watery fluid at times in my tail pipes that smells just like fuel so almost a dead giveaway, that and a black residue around the inside edges. I don't think im running extremely rich, but its enough that i noticed a difference.

That being said heres the question, because I didn't tune my car with a flash or a dyno after the aftermarket parts were installed is this the cause? Of course my CEL is on, and I wonder if my O2 sensors are going crazy with the new parts. I was told to just drive it a while and my computer would adjust to it, that doesn't seem to be the case. So I need some advice, otherwise I know my plugs are going to go out and keep going out until its fixed.

Others with older model mustangs have told me that this is common and they've ran theres for a year or so before getting the tune, but I don't want to risk it with a brand new car. So any help would be appreciated, because I am clueless.

BBK L/T Headers Here
BBK X-Pipe Here

bruthru2003

i would say go get it scanned to see what the codes are. Maybe something didnt get hooked back up.