flamesarewicked

i have a good idea why my car is running rich..im just not sure of the first place to start to fix the problem. my smog pump is gone and i have no cats....fuel pressure is at 40 and the smell of the exhaust can make ya eyes water lol..well maybe not that bad. fuel mileage isnt that great..probably 19-20 at best on the highway....any thoughts?

Hotrod

I was told to put in an adjustable fuel regulator to help keep ours from running rich. It's set up the same way as yours. Ive havent put one in yet so I dont know wether or not it truly helps.

joker

The smell is coming from not having cats. Do you have tailpipes all the way out to the rear of the car, or turndowns? Turndowns will make the smell 100 times worse. Also, yea you can lean the car out a bit with an adjustable fuel pressure regulator.

One last note, mustangs run rich from the factory, it is the way Ford tunes them. Rich = safe tune and engine no go boom easily. I wouldnt go trying to lean the car out without having it on a dyno to measure the a/f ratio. Going too lean can lead to bad, bad things.

flamesarewicked

it has an aftermarket regulator on it. i had it checked and the ford guy that i was talkin with about it says it should be at 40 which is what its at. i dont have any tailpipes on it and i dont have turn downs...its just comin straight out. im soon gonna change it to the american thunder flowmaster system..

conv_stang

i dont have cats on my 92. and you betta not stand behind mine too long. you might get brain damage! LOL its only really bad when i first start the car up. once the fast idle on start up goes down. its not too bad.

Hotrod

OUr car had 104 jet fuel in it when we got it and we just stood behind it breathing. Man did it smell good!!!