what is the sweet spot for this turbo? I currently have this on a 8motor and run 19psi and I find it very laggy compared to the orginal 16G it had. any advise would be appreciated.

 

Alot of people up here have used a IX turbo on a 8 and have made some impressive numbers

 

I think its more limited than laggy. Before I get bashed with dyno printouts of high-hp stock turbo Evo 8's, im just sayinnnn.....

 

Hahaha, misread it. Thought u were talkin about an evo 8 turbo

 

You can try a couple of things. First, which also happens to be cheapest and easiest, is to increase the preload on your wastegate. Secondly, you could swap the 10.5 exhaust housing for a 9.8 unit. These should be relatively cheap used. Maybe you just happen to have one lying around from your old turbo.