Single Turbo M4 GTS Dyno Session...750rwhp! 😈

[JustAnothaM4]

Originally Posted by Soul Coughing

Great numbers! Does this turbo have a internal wastegate? Or did you run an external one? And if so, does it dump back into the downpipe or separately?

Internal WG that dumps back into the downpipe..

[Soul Coughing]

Originally Posted by JustAnothaM4

Internal WG that dumps back into the downpipe..

Thanks! And there were no issues with boost creep or wastegate control?

Once my F80 no longer does DD duties, I'd love to do this setup. Did your tuner say anything about how much better IAT's or timing/knock was with your water injection compared to other S55's he's tuned on pump gas?

[JustAnothaM4]

Originally Posted by Soul Coughing

Thanks! And there were no issues with boost creep or wastegate control?

Once my F80 no longer does DD duties, I'd love to do this setup. Did your tuner say anything about how much better IAT's or timing/knock was with your water injection compared to other S55's he's tuned on pump gas?

No issues at all with boost creep or WG control.

No, he didn't mention anything anything about IATs or timing/knock with the oem water injection. There were 0 concerns with any of that.

[mrtuff]

Originally Posted by JustAnothaM4

Just finished up the single turbo build on my M4 GTS!

https://youtube.com/shorts/oAJ7ZELuitc?feature=share

E50 vs 93 dyno chart below..

GTS keeps factory water injection!

Setup:
4N Motorsports GT Turbo kit w/ Borg Warner EFR8474
4N Motorsports 3.5" custom titanium midpipe
SSR 4 pin crank hub fix
Akrapovic rear exhaust
PR Stage 3 Brushless LPFP
Dorch Lift Kit
EU5 Injectors
MHD Software
NGK Spark Plugs
B58 Coils
Bend Calibration Ultimate Filter Kit
BP Engineering Titanium J-Pipe
Wagner Top Mount Intercooler
Fall-Line DCT Ultimate Cooling Kit
BimmerWorld DCT Quick-Overfill Kit
BimmerWorld "Oil Overfill Kit"
Mosselman Oil Thermostat
PWR Engine Oil Cooler
PWR Aux Heat Exchangers (Right & Left)
CSF DCT Oil Cooler
CSF Heat Exchanger

Is there any way I can get this same turbo but for a top mount kit? I checked speed tech and 4n but speed tech only offers garret and 4n only opts for botttom mount

[JustAnothaM4]

Originally Posted by mrtuff

Is there any way I can get this same turbo but for a top mount kit? I checked speed tech and 4n but speed tech only offers garret and 4n only opts for bottom mount

I don't know...you will need to find a shop that makes a manifold for a top mount turbo or build a custom manifold.

[wheela]

Originally Posted by mrtuff

Is there any way I can get this same turbo but for a top mount kit? I checked speed tech and 4n but speed tech only offers garret and 4n only opts for botttom mount

You could try reaching out to Jeff at Speedtech and ask him what potential fitment issues he forsees using this turbo with his kit. There's a possibility that this turbo may work with some mods, or maybe not. Doesn't hurt to ask

[b_w.]

Originally Posted by wheela

You could try reaching out to Jeff at Speedtech and ask him what potential fitment issues he forsees using this turbo with his kit. There's a possibility that this turbo may work with some mods, or maybe not. Doesn't hurt to ask

Efr is longer than the Garret and need a mount for the wastegate actuator which is not part of the speed tech design.

[Rexican]

Nice numbers and build. I'm sure this thing feels like a rocket ship.

[wheela]

Originally Posted by b_w.

Efr is longer than the Garret and need a mount for the wastegate actuator which is not part of the speed tech design.

EFR is longer, but you can get an external gate version to work with the speedtech external gate manifold. That's what I did Externally gated EFR 8374 (same physical size as 8474)