Jefk

im just bieng REALLY careful on this, some money on the line i dont wanna have be a lost cause, ive heard stories where they dont bolt up right and what not, and ive always had 2wd, funny how this thread went from cats to heads though

Cmanjr

What's the difference between 5.4 headers for a 2wd and a 4wd? I've noticed that they are a always listed separately when I'm looking at them. Plus my trucks 2wd.

Jefk

i think its gonna be minor angles changes

Jefk

looks like ima get these http://www.streetsideauto.com/p/pace...FYQ8aQodXg0ACg

Jbrew

Heads? Not sure who's talking heads, -what do you mean? Talking heads..get it?

I guess I assumed you had the 4x4 since there's absolutely NO install problems on the 2wds. Not sure where your getting you info from ? First I've heard and I've been around a while lol.

I'm not you, -so it helps a ton posting what your driving. Impossible for me to remember everyone's truck. I would be a champeen if I could.

There's a way to do this and save a bunch of money, but I'm sure I've explained in one of your other exhaust threads. If not your, many others.

Jefk

what other exhaust threads but you havent that im aware of on mine, your actually only on 2 of 5 i've set up

Carcrazygts2

I wouldnt put Pacesetters on a 4.6. They are 3" and will kill the bottom end power dramatically. I have them on a modified 5.4 and noticed the power moved up.

Jbrew

That's what I was worried about at first, - figured I'd get it tuned if I lost any. Luckily I got more out of it with just the factory tune. I welded the cats right to the headers, - from Troyer 3x2.5 converters, -reduces at the rear. Great low end, better than factory that's for sure. The entire system is balanced, - no non fowlers and no harness extensions, no tune adjustments. It's my favorite mod, picked up 6 seconds, - on vidjeo.

But yea, you can screw all that up if the back half of your system isn't set up right.

You can get the OBX in 3" now as well.

Jbrew

It isn't the collectors that move the power-band, - it's the Y. Some have used that 3" off road pipe combo or 3" thru the Y.

At the collector , where the primaries converge, = 3 is better than 2.5. You just reduce right after...back to 2.5.

Jefk

thats what i worried but figured itd all be ok based off pacesetters rep on here, if i can find 2.5" obx for what i found on ebay (moneywise) but not on ebay i oughta be good