Originally Posted by bra$$monkey

Good to know. Still, traditional power adds are not as effective as you would expect.

Ford wants it's engine to outlast the warranty period and get decent gas mileage. So the tune is mild. It doesn't let the engine go all out. While exhaust & intake mods may make a small difference it will be less of a difference than you would find on a carburated engine because the tune is trying to keep everything low key.

If you are looking for power you are better served by spending your cash on a new chip, or a retune.

If you are going for sound go with exhaust.

If you want both get out the credit cards & do both.

*point to remember* tune the computer after you do your other upgrades as each upgrade will allow you to tune more power.

Originally Posted by NewEnglander

I run flowmaster super 40 series. I removed 1 cat (out of 2) and dumped it before the axle. My mechanic said as long as I still have 1 cat on it, it is fine. (In Massachusetts, which I'm also exempt from emissions since the vehicle is 15+ years old). But good luck in Cali. Personally I wouldn't go with no more that 3" after the muffler. I know atleast on the stock I believe up to the muffler its about 3" - 3.50"? Correct me if I'm wrong. But once it hits that muffler after that it would cut down to 2.5"

It wouldn't hurt to do exhaust, open it up, and also a cold air intake. Basically open up both ends.

This ones newer. Same exhaust
Video Link: http://www.youtube.com/watch?v=ltGu4dPo99E

This ones older. (Before lift and tires)
Video Link: http://www.youtube.com/watch?v=IXp91qLXHwc

Originally Posted by NewEnglander

Yeah I posted it here a few times lol. Yeah I had the flowmasters on mine originally with the full exhaust system and I was disappointed so I took the sawzall out and took a cat out lol

Originally Posted by ZombieSlayer

In CA you have to have both cats or you will fail the visual inspection on a smog check. Last month I replaced my muffler with a 1 in 2 out flow master and dumped the exhaust at the tires. Sounds great and gave me a 1 mpg boost

Originally Posted by Edds

Sawzall? Yeah I'm not sure if taking out a cat would be good here in Cali, but ill ask the day I go to mechanic.

Originally Posted by NewEnglander

Yes a sawzall lol. Yeah that wouldn't work out to we'll in Cali. If you can pass the smog test you could do 2 high flow cats. But I know a lot of people have had issues with passing even doing a whole new system.

Originally Posted by ZombieSlayer

A sawzall is a portable powered saw that cuts through "all" Pretty handy for small jobs.

I don't know which series muffler I have, can't find the paper work