James_G

Title says it all, I've got a 94' with a 302 in it and wanted to run some straight pipes from the headers to an x pipe and then run two straight pipes behind that, no cat.

Will this engine be able to run right ?

If I do decide to do this I WILL be getting some custom adjustments to the engine to make it run correctly w/o the o2 sensor. (Trucks running really rich anyways)

Thanks guys

dirtcrew51m

Engine needs mufflers of some sort and o2 sensors, if o2 sensor after cat you will need cat if not will run ok w\o cat, no cats depends on how strict state is, besides cats dont take away from power that much unless it is clogged.

James_G

o2 sensor is fried anyways, I believe that could be one of the reasons why the truck runs so rich, I've got two glass packs, live in FL so emissions ain't a thang

chelios

if your truck only has one O2 sensor, it is before the cat. that determines your fuel/air ratio. and thats it. it doesnt care about your aft-cat readings. so yes, you can run straight piped no problem. i think 94's only have 1 O2 sensor...

James_G

Yea my truck only has one sensor

Sahweet, just cause my truck is in the shop right now getting a tune up, lift kit and tires done and the mechanic doing everything says I need a cat b/c of backpressure

chelios

one turn in your manifold and your x pipe is enough backpressure for your 5.0

Just call me Sean

iTrader: (1)

You need the oxygen sensor but the cat and muffler don't really matter, although I would recommend running some kind of muffler. By the way, you can still get a hefty fine here if a cop decided to see if your cats are there and finds none.

James_G

Where should I attach an o2 sensor ? Just on one of the pipes ?

And I live all the way down in Key West so theres old lifted island trucks running around that definitley don't make state requirements and they dont seem too care

I do remember the fine being really hefty though if I were to get busted

chelios

just keep the stock y pipe and cut off the first cat where the 2 pipes actually merge. the o2 sensor can stay on that smaller crossover pipe there. or if you are getting rid of that, put it in your x pipe.

Just call me Sean

iTrader: (1)

Best place for the oxygen sensor would be in the X so it can read both sides but it will work on only one side similiarly positioned in a stock type location.