Cast EFR IWG 7670 Pump gas stock port dyno
 

Stock port FD, Adaptronic FD PNP, IGN-1A coils in DF, 3" exhaust with a highflow cat, greddy VMIC, 13.5psi on pump gas. Mild tune. Holds 8 psi with the controller off FYI.
344rwhp/296rwtq( red lines)

EFR peak power looks nominal for a 57mm compressor at that boost.

I am thinking the IWG versus external dumped WG is most the ~35hp peak missing on the EFR 57mm VS the TDX 57mm.
I base this on dynos I have seen of just re-routing external WGs losing 30hp versus dumped on ~400hp cars.

External dumped is an option for the EFR, but I can totally see why people would want IWG.

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That EFR spool is awesome!
It is hard to fake spool on a dynojet (brake boosting or Nitrous Oxide required) and full boost before 3,000rpm and that EFR 7670 response is what this set-up is all about.

150rwhp by 3,000rpm is spanking sequential twins and I know from my 7670 the EFR response is actually better (bordering on hair trigger).

That TDX 57 spool line is interesting with the exponential power increase indicating spool up to 3,000rpm and then a knee and another exponential power increase up to 4,500rpm. Usually you just get that exponential curve as the turbo spools to full boost.

Any ideas on the TDX 57mm power curve Elliot?

Manifold was just steadily boost creeping I believe.

Any back to back dyno's with the other efr kits?

How would a EFR 8374 spool compared to the 7670?

You can see a bunch of dyno plots here;

BorgWarner EFR IWG 13B Rotary Turbo System

when is the longer, EWG cast mani picured in cad in your sig going to be available?

I do not have an exact ETA on those yet.