New turbo: Ported or unported?

[spectr019]

I'm going to get ready to order the TD05H-EVOIII 16G-7CM² to replace the T-25 in there now. However, I don't know how much of a difference the unported version (wastegate flapper) and the ported version will be. Any help on what the two different kinds will do for me I'd really appreciate.

-Ben

 

[CanadianTSi]

Normally when they port a turbo they get rid of the step on the exhaust side and do a little work on the wastegate area.

Order it ported, most places (esp. SBR) do a good job.