They are actually 560'ss. They should be plenty for 17 psi.

Make sure you have an upgraded fuel pump as well as a way to control those injectors. I would suggest a rewired 190 lph walbro and some sort of SAFC.

Also, be sure to properly port the turbo to avoid boost creep.

i was told it was ported but i cant tell, i will be buying a walbro 255 and an safc soon

Be sure to get an AFPR setup as well then if you get the 255.

If your not sure if its ported you might want to do it anyway before throwing it on. Here is a great write up on how to. http://dsmtuners.com/forums/showthread.php?t=186525&highlight=Porting

2gGSX said:

Also, be sure to properly port the turbo to avoid boost creep.

Click to expand...

I'm skeptical about porting EVOIII16Gs. This type of turbo flows very well without porting. Ask ShapeGSX what he thinks about ported vs non-ported EVOIII16G turbos.

http://www.dsmtuners.com/forums/member.php?u=1661

Better yet, use the search option and type in his profile name with a thread title as general as "16G" or "EVOIII" or something similar. You can go from there and click and read until you heart is content.

EDIT: You may also be interested in this bit of info:
http://newengdsm.org/forums/viewtopic.php?t=2449&highlight=16g
http://www.dsmtuners.com/forums/showthread.php?t=231405

This argument has been brought up before. The "proper" method of porting it is to allow more room for the wastegate flapper to open, which theoretically (obviously YMMV) would not affect the high boost characteristics of the turbo since you are not putting on the 34mm flapper. With that being said people have had great results with this in terms of controlling boost creep without having to resort to the larger flapper.

I've read Josh's opinions on the Evo III, and I also left mine unmolested. Both of us however have the supporting mods to run 18+ psi daily and not experience creep anyways.

2gGSX said:

This argument has been brought up before. The "proper" method of porting it is to allow more room for the wastegate flapper to open, which theoretically (obviously YMMV) would not affect the high boost characteristics of the turbo since you are not putting on the 34mm flapper. With that being said people have had great results with this in terms of controlling boost creep without having to resort to the larger flapper.

Click to expand...

Post #3 and post #19:
http://www.dsmtuners.com/forums/showthread.php?t=233936&highlight=flapper

The wastegate flapper will only open only so far because it only has so much throw.

http://newengdsm.org/forums/viewtopic.php?t=1910&highlight=flapper
http://www.dsmtuners.com/forums/search.php?searchid=2107489

People have different opinions on what works and what doesn't. Read and make your own judgment.