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Surely you jest
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Can someone enlighten me as to what the difference is between the two?exhaust housings? (G)nttype.org doesn't compare them and I can't find anything in the search files that provides any info. Essentially, I'm interested in the .63, as my TE-44's is a smaller Garrett model. Would I pick up anything by going to a .63 and a Dutt neck?
 

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PTE offers some recast exhaust housings for the Garret turbos that offer better exhaust flow without degradation in spooling according to them. Some that have used them have reported success and others have reported slower spooling in some cases. I believe all claim a bit better top end.

I think they offer some oddball sizes such as an .85 as well.

I believe John Craig of Limit Engineering offers them as well as he and Harry are both ex Garrett guys.
 
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