Long story short, I replaced a totaled 96/460 4x4 with a 97/460 4x4 in January.

I was not prepared to give up the power of the 460 and buy anything different after driving the 96 for 9 years. Addicted? Yes !

The "new" truck has an E40D with 410 gears. Only mod is a K&N Air Filter. (from my 96). Running factory size tires.

Put Bosch plugs in it a couple of weeks ago can't tell any difference in HP or MPG.

On flatter ground pulling 5k trailer at 60mph I get a litter over 8 MPG.

I kept the totaled truck and parted it out. Kept the exhaust system thinking I would put duals on this truck. Really just kept it for the cat.

?
Will I see any performance increase by going to dual exhaust?
Worth the expense?
Should I do cat back or use both cats?
Would a chip be a better investment?

 

On my 97 crew cab w/ 460, dual exhaust from an empty cat back, helped a lot. just the other day, I opened the air intake up and that made a major diference, did that by trimming off little cone shaped plastic between the air hoses. I haven't drove it enough to see gas mileage change since I cut off those cones, but really noticed a power increase. You may ask some other guys on here about those cones but, it worked well for me.

 

hey bonestock, you said you have an empty cat. is that the one with the o2 sensor in it. will it still pass inspection if i do that. I have a 97 f-250 with 460. thanks

 

o2 sensor is in front of the cat on mine. where i live the inspection is visual inspection only so, as long as it looks like itis there its good. check your emissions.