can someone explain why?

[timlsalem]

Here's one of those questions that everyone probably has a different answer for. Mine is a 1995 F350, 7.3. When Ford produced these they put that squwished up downpipe on it because? I've been told one reason is because there wasn't enough room between engine and firewall for anything else. If that's the case, why is there room now for a 3" DP if modifyed?

[sgg93]

Because you modify it... I wouldn't imagine Ford would want to chop up that seam from the factory like the rest of us have done in the course of installing a 3" DP.

[vandy]

Makes me think about my old 5.0 fox mustang. Ever look at the stock "headers" on one? Never understood why they would put those on either

[marine5811]

Ford didn't design the engine, either. International designed it and Ford might have had to build the truck around it. I don't actually know, but that would make sense I guess.

[351fifty]

sound, vibration, asthetics, you name it, actually a lot more r&d went into the downpipe that is stock than any of the aftermarket ones that fit in there, but take a look at the factory intake, out of the box these vehicles are only aloud to emit so much noise/cab vibration/intake note/exhaust note. a lot of thought went into the part we all hate so much, and the intake is just so easy to make a better design, but that is your reason as to why it is made that way, many things dont make sense, but it is a federal mandate to follow and thats how it gets done

[Patrick Feeley]

Not that this is the case, but I always figured that Ford would not want to have a separate bunch of bodies to redesign and manufacture just for the PSDs. Making a downpipe that fits the existing design is much cheaper. Cheers!

[SEVEN THREE]

Originally Posted by 351fifty

sound, vibration, asthetics, you name it, actually a lot more r&d went into the downpipe that is stock than any of the aftermarket ones that fit in there, but take a look at the factory intake, out of the box these vehicles are only aloud to emit so much noise/cab vibration/intake note/exhaust note. a lot of thought went into the part we all hate so much, and the intake is just so easy to make a better design, but that is your reason as to why it is made that way, many things dont make sense, but it is a federal mandate to follow and thats how it gets done

But the super dutys come with a non crushed pancake pipe so now the question is, why them but not us? Why do they get all the noise and vibration and we dont?

[BigFuel]

5 yrs of making something that nobody wanted then had to compete with a Dodge and Duramax that didn't have this issue. Also notice that on Patrick's, [EDIT] Kris's, and my '97 Cali trucks had things on it that where only on it for our one year. The parts on our trucks made them so undesirable in Fords eye they canceled the '98 model year. Loyalty is whimsical when the "other guys" can out perform you.

Simply, this is why a 1st Gen anything begets a 2nd Gen something.

[351fifty]

super duty was built in 99+ the obs was built from 80-97 and the international t444e was built in these trucks from 94.5-97, why would you make a whole new truck kause you got a different motor? not very cost effective is it? look at the 2010 mustang new body same 4.6 from 05-09, 2011 got new motor but same exact car around it

[marine5811]

Kris that's a good point. I never thought about noise emissions. My 99 4runner has an Intake Noise Reducer that basically bounces the intake air around a set of baffles just to make it quieter.