Why remove the wastegate?

[StoneGuy]

I was just reading up on the turbo rebuild mod and he went with a compressor housing with no wastegate. What does this do? I know the wastegate has a spring that relieves pressure at a certain setting and that pressure can be changed with a different spring but, what other factors are involved. Does this allow higher boost pressures(obviously)? Is this good for a stock turbo/engine? What problems might you encounter doing this mod? What is the actual result of doing this? Inquiring minds want to know.
Regards,

Dwight

[bruce51d]

wastegate is on the turbine housing. most do away with it because its just one more thing to screw up and with smaller injectors you'll never reach the drive or back pressure to really need one.

[jesilvas]

"A wastegate is a valve that diverts exhaust gases away from the turbine wheel in a turbocharged engine system. Diversion of exhaust gases regulates the turbine speed, which in turn regulates the rotating speed of the compressor. The primary function of the wastegate is to regulate the maximum boost pressure in turbocharger systems, to protect the engine and the turbocharger."

The 7.3 WGs seem to be fairly weak, and can open up before they are designed too. And since most ppl wanted to be cheap with these trucks, they would take them off thinking they got more boost, and they might've.
The problem you could run into, modded of course, is that you boost too high and damage things.