450 Box Van, Who Makes A 4" Down Pipe For It

[7.3 Powerstroke]

I have been looking for a 4" turbo down pipe for a 1999 450 box van. Any suggestions ? Any suggestions for a cold air intake. No one seems to make them as well.

Greg

[SIC-E]

greg,
i know nuttin but understand that 4" downpipe will hurt vs. help unless yer goin for big hp. low end losses at that size. 3.5" better per research. no direct knowledge so you prolly know better'n me.
Will want a 3.5" when i do 4" exhaust but will stik w/ oem air cleaner as mines a 6L and supposedly best filter vs breather for all around perf. and use. good luck!
whats this box van doin to deserve all the goodies?

[sixiron]

Originally Posted by 7.3 Powerstroke

I have been looking for a 4" turbo down pipe for a 1999 450 box van. Any suggestions ? Any suggestions for a cold air intake. No one seems to make them as well.

Greg

try warpspeedperformance.com in rogers ar...they make a system for the motorhome...probably best to call them ...

the van system they sent me had an extra 4' length of pipe, in there for the motorhome application ...

bd

[deltadrummer1]

Originally Posted by SIC-E

i know nuttin but understand that 4" downpipe will hurt vs. help unless yer goin for big hp. low end losses at that size. 3.5" better per research. no direct knowledge so you prolly know better'n me.

A turbocharged engine displacing 7.3L will only benefit from a 4" down pipe. And as far as true 4" intakes go, we've all had to make our own as I have yet to find any already available.