Hi, I have a T3T4 AR .63, 57 Trim turbo.
I have a 2.5" diameter exhaust exit on the turbine housing.
I am going to use a 3" custom downpipe setup. Will this cause on issue with turbulance of the exhaust flow? i also plan on having the downpipe open with a side turndown. planning for 350whp.
Thank you

aslo on a log mani.

 

Shouldn't be a problem at all, I'm also running Garrett 57trim 63 A/R with custom 3" down pipe and exhaust all way to the rear. Full spool around 4500RPM.

 

Looks good, i guess i'll just say [freak] it and run it anway.
looks good

 

what manifold are you using? yo may have boost creep issues, if it has poor wastegate placement.

 

muetek, i was just wondering on the exhaust velocity being that it goes from a 2.5" exit to a 3". Without a 2.5"-3" expanded pipe.
kinda get what i'm saying?

the wastegate flange is right at the collector portion so it gets all runners. cast log.