Originally Posted by
Johnny Knoxville
Will is using one with a external wastegate EFR on his ST170 Focus
He might be using a larger one than I would. I'd use the 6258 as it would give great spool apparently. The bigger turbos have different housing options and internal wastegate delete.
Originally Posted by
lukeytheduke
i thought u could modify the internal wastegate to run an external one??
Anyway efr results came back better than gtx range so as rod says defo go borg w route
You can modify them, you just tack the internal wastegate up but it still doesn't get away from the fact it's still there when it's not needed. No doubt creating a little restriction.
The Borg EFR are looking great but even with research I can't find dyno plots of say a before and after in comparison to a garret. Perhaps anyone could help with that??