Whats the difference?

[Tony V]

I was wondering if someone could possibly explain the difference between a bigger exhaust housing on the turbo and a wicked wheel. I do know some I just wonder the the goods of each or if it is pointless thanks.

[Jake]

A bigger exhaust housing allows more airflow out the exhaust side, a wicked wheel eliminates or at least helps reduce surge.

[Tony V]

yeah thats what I knew I guess I didnt ask the right question. Ok is the bigger housing worth doing? Does it just lower temps?

[Jake]

I cant answer that one.

[Tony V]

Thanks anyways Im sure some1 will come along.

[fordfan30]

I may (as in 90% of the time) be wrong but I thought the wicked wheel was on the compressor side of the 7.3 turbo.

[Ryan Rønning]

Originally Posted by fordfan30

I may (as in 90% of the time) be wrong but I thought the wicked wheel was on the compressor side of the 7.3 turbo.

The wicked wheel is on the comp side. The bigger exhaust housing like Jake said just lets the exhaust gasses get out of the truck faster. I have no idea what it helps. I just know that the wicked wheel in conjunction with a ported comp housing is supposed to eliminate turbo surge!

[Tony V]

So 2 do both is a good thing?

[fordfan30]

It would seem

[GreenF350]

The bigger exhaust housing crates less backpressure. It will also increase spool up time (how much is somewhat arguable) and may lower peak boost a little.

That being said, the wicked wheel is supposedly slightly less efficient, which is why it tends to help get rid of surge.
If you are at sea level, it might now be a bad idea to get the bigger exhaust housing, and it may help with the surge. A wicked wheel may or may not get rid of it too. If you are trying to get rid of surge, the the ported compressor housing is probably the best way to do it, but not the cheapest. My advice is to keep up the research and get to understand how it all works and then make a decision based on your use and needs.
-Aaron