Is there any manufacturers that make a 3" downpipe for the 94 7.3 idi turbodiesel? I have not been able to find any such animal. Also will the turbo exhaust outlet even accommodate a pipe that size? I have an all factory turbo system on the engine.
ATS is the only manufactuer that makes a 3" DP for the 7.3 IDI. In order to make it work with the factory turbo, you would have to purchase the 3" turbo outlet elbow from ATS. Last time I checked, ATS was still in the process of trying to fabricate the 3" outlet housing because the company that use to produce them for ATS went out of business. I thought about going with the 3" outlet housing, DP and complete ATS exhuast system and tail pipe until I found out everything was on backorder and ATS had no ETA on when they would have the outlet housings available to the public. I would advise you to completely research the ATS system if you decide to go with them.
Banks also makes a DP for the 7.3 factory turbo. Banks downpipe is a 2 7/8" DP that bolts to your stock factory turbo outlet with no modification and uses the stock v-band clamp that your stock downpipe uses now. One advantage to the Banks DP is that no firewall modifications are needed and it's a simple install. The ATS DP install requires some bending and fabrication to the firewall in order for it to fit between the transmission and the firewall. The Banks DP was $112.00 shipped to my door, where the ATS downpipe and turbo outlet are alot more $$$$$$$$$$$$$$.
I have the Banks DP with a 3.5" exhaust and an aero turbine muffler and have been well pleased with the performance.
There are some members on this forum who have fabricated their own 3" housings and DP................
