This might be a pretty stupid question but can I use the factory 97/98 4.6L Y Pipe on the 99-03 4.2L? They seem similar so I thought I’d ask, but I’m assuming I can’t.

 

My guess would be no. Reason why? The V8 is probably wider.

 

Most likely. Guess I could measure it tomorrow morning.

 

Not sure how much help this will be but the 4.2's I've had didn't have a separate or lone Y pipe. The Y is part of the passenger side exhaust system from the exhaust manifold to the Y where the driver side exhaust joins the passenger side at the Y. Each side is a single, welded piece with cats. The only clamps are where the driver side joins the Y and where the rest of the exhaust system connects to the Y. I don't know if I'm telling you something you already know or not and I don't know how the 4.6 exhaust is pieced together. Also, mine have all been 2.5" at the Y. What I spent a lot of words to say is the Y is not a single piece. If it all fits I can't give any reason why it wouldn't work with the 4.6?? Everything after the Y is the same on the 4.2 for the entire 10th gen.

Not sure about the wider engine difference. The 2 engines are interchangeable with there own mounts and fit the mount brackets on the crossmember. The 4.2 exhaust will fit to the Coyote shorty headers. If there is any difference in width it's not enough to be noticeable.

 

Yeah from what I can remember it looks like the same design as the 4.2 was. The exhaust on my 2003 was missing due to rust. Most of it had fallen off lol. The parts truck has the factory manifolds, cats, and y pipe but after the cats connect to a single pipe it’s just dual straight pipes all the way back. Previous owner did that.

 

Anyone have any experience with Arduino boards and programming?

 

There might be a difference after the Y. I've only seen single pipe in and out of the muffler after the Y with the 4.2. Sounds like you've got some options for your exhaust if you already have dual pipes under the truck.

 

I have a Stanley box with 3 Arduino Uno's, 2 Megas and 4 Raspberry Pi's inside. Also a crap load of different hardware, digital boards, breadboards, etc, for both set ups, BUT, I haven't played with the Arduino's yet. Only the Pi's. I even have a 324GB hard drive for the Pi's. I have 4 different systems cards for the Pi's and this winter will be joining a Makers group on Mondays to learn more about these myself. I was going to add a Pi and 10.1 screen and make my own computer radio. Of course, with all the cheap Android heads now on the market, I have a load of parts for that project also. I've waste a load of cash on this crap, only to let it sit. Sort of like my DJI drone with GOPro and gimble.

I tend to collect more things than I'll ever do. It's a terrible trait, but I always seem to have what I or the neighbors need. You should see my damn HO train collection. It's gotten ridiculous. I started it for my grandson, but they moved to Alabama for work with an Alaskan Corporation, so they had to go. Now I have $$$$ of dollars tied up in something I'll never use. Ebay and Christmas this year. I hope to stay busy getting these gone. lol

 

I have one Raspberry Pi, but I've done very little with it. I need to dig it out and mess with it again. Microsoft has announced the release of their own version now called the Azure Sphere. I am thinking that I might pick one up, as I think it has more possibilities than Arduino and RP's. They are more pricey though.

I thought you fellers might get a chuckle out of this....

 

At least they would enjoy the ride back down.