BorgWarner EFR 8374 Turbo

Results

Warren Luff, driving the Nemo-Racing.com Evo 9 with EFR8374 1.05 a/r, winning WTAC2012 with this record setting lap:

Vsport EvoX with EFR8374 1.05, landing 2nd place in the Open class at WTAC2013, footage by Go-PRO:

Nik Kalis Evo9 with EFR8374 1.05 a/r, Open Class, WTAC 2013:

Dyno Test Results: Full-Race Geoff’s Daily Driver Evo8: EFR8374 0.92 a/r VS GT3076R 0.63 a/r

Full-Race Evo8 on the dyno at Black Market Racing

Full-Race’s R14 (stock bottom end RB26) with EFR8374 1.05 a/r Twinscroll RB turbo manifold + EFR 8374 and catalytic converter on the UMS tuning dyno during Modified Magazine tuner shootout:

Chris in NZ’s R32 GTR with RB30 and EFR8374 0.92 a/r, BW stiff actuator, 24psi.

English Racing Evo8: EFR8374 @36psi VS HTA3794R @37psi

Below is a dyno chart of Twinscroll EFR 8374 1.05 a/r, from the Sierra Sierra Evo. Tuned by Eric Hsu of Cosworth, and using a Cosworth race engine, the SSE Evo is equipped with the EFR 8374, Full-Race Twinscroll Manifold, 2.2L engine, revving to 8500rpm with ~32 lbs (2 bar) of boost.

Stephen Kakavas’ Time Attack Evo in australia uses an 8374 1.05 a/r on a 2.1L long rod 4G63, tuned to approx 32psi boost.

power and torque:

power and boost:

Ennio’s Honda S2000 EFR8374 0.92, Full-Race Twinscroll IWG kit, Motec ECU, stock engine @0.8bar boost:

Jeff Lee’s 2.0L K20 w/ Full-Race EFR 8374 Twin-Scroll Internal WG turbokit

Jun Masculino’s T3 singlescroll K-series Honda dyno comparison @15psi boost pressure:

Green Line: EFR 8374 .83 a/r (42mm internal-WG)
VS.
Purple Line: GT3582R .82 a/r (44mm Tial external-WG)

Both turbos are tested on a Full-Race T3 turbokit ( singlescroll undivided). The same manifold and pipe routings were used. The dyno and tuning was done by Tim @ Xact Dyno and the vehicle is Jun Masculino’s K20 RSX (Ikon671 on clubRSX). This type of engine has very high VE and thus a tendency to boost creep; it is interesting to note that the EFR not only controls boost better, but also makes more power everywhere in the rpm-band.

2.0L evo dynochart of T3 singlescroll EFR 8374 .83 a/r, using the internal wastegate at high boost:

“Ric Shaw’s World Time Attack and Endurance racer FD RX7 — 480hp @22psi boost”

2.5L Subaru STI comparison, EFR 8374 0.92 a/r (red line) VS EFR 9180 1.05 a/r EWG (blue line):

2.5L Subaru STi, EFR8374 0.92 a/r, built by FAST of Westchester, PA Engine:

• 2.5 Liter, CP pistons 100.5mm, Eagle Rods, ACL main/rod bearings, ARP head studs
• GSC Stage 2 Cams, Gates Timing Belt, TGV Deletes (powdercoated black)
• Full Race Twinscroll EFR IWG turbo kit
• Borg Warner EFR 8374 0.92 a/r
• Full-Race intake manifold (rotated) (powdercoated black)
• Full-Race phenolic spacers
• Full-Race Charge Pipes
• Full-Race Equal Length Headers

Install

• BorgWarner EFR Installation Guidelines
• For help setting up your EFR WG please read this PDF document.