FFTEC's EFR Turbo System: ~24PSI Dyno Numbers

[Anthony@FFtec]

On a whim, today we took the opportunity to strap our MEB onto a friends Dynojet . We were having some issues with tach pick-up, and it is reflective in the dyno plot vs. Engine RPM. As such, plots against speed are also shown.

All tests were performed in 4th gear, near back to back.

At ~24PSI we were able to make 410HP uncorrected. With the .98 SAE correction factor (and smoothing) we were brought back down to 403HP. We have currently opted to mitigate overall TQ output on the chassis, but keep in mind we have taken the TQ well (and we do mean WELL) into the 400's; more information on that to come later :clap2:.

All these tests were performed without calibration changes between them. We just allowed the OAR do do its thing as it learned the octane rating of the freshly pumped fuel. The 91ACN that was in the car (and still some remnant of) never seems to yield consistent/comparable results; as most of you know.

The car is currently configured with a small frame BW EFR turbocharger. This is a T4 twin scroll turbo that has an internal wastegate. Our turbo manifold does retain the cylinder divides, keeping the system 100% true to its OE twin scroll design. The chassis is also equipped with our EcoCore intercooler, and calibrated using a COBB Accessport by our team of calibration specialist.

Chassis setup breakdown

• FFTEC Turbo System -- Utilizing a small frame BorgWarner EFR turbo
• FFTEC EcoCore intercooler
• FFTEC Chargepipe system
• FFTEC Intake System
• FFTEC Downpipe
• FFTEC Exhaust System
• Custom Accessport calibration by FFTEC's Calibration staff

We don't have 93 octane fuel here in CA, so we opted to run 94 octane for our test. The fuel is local and available from the pump.

Here are the results. All SAE corrected with a smoothing factor of 5:

The original calibration was performed on 91ACN, and the fuel forces us to "proceed with caution" at every step. After seeing these plots for the first time on a DJ, we plan to make some revisions and hit the dyno again soon!

Sponsored

 

[04SloSnake]

This is great news.

 

[Papaya]

Wow! 400 HP? :faint: And only bold on parts? That's getting interesting now. Thanks for sharing.

 

[RubyRacer]

As long as the fuel system and stock rods hold, this may end up being my setup!

 

[Juben]

What was the fueling looking like, e.g. injector duty cycle, fuel rail pressure?

Sent from my Nexus 5 using Tapatalk

 

[wireless]

Excellent. How much more can you get out of this turbo? Is it able to go higher, or is this the limit?

Depending on this, I'd be very interested

 

[dragonacc]

7163? Or smaller? Looks like it's still spooling really fast.

 

[bluestang50]

I can not wait to see final numbers and a kit price!

 

[cosmo]

This is awesome, looking forward to how all this ends up looking. I'm guessing the turbo will be around 2500-3500 bucks total, which is very reasonable.

 

[David@FFtec]

7163? Or smaller? Looks like it's still spooling really fast.

Yes, it's the 7163. It builds ten psi at just 2k rpm so you can keep it in 6th gear on the freeway, no need to downshift. I also like how it makes peak power up at 6200 rpm, it has a broad powerband.

 

[dragonacc]

Yes, it's the 7163. It builds ten psi at just 2k rpm so you can keep it in 6th gear on the freeway, no need to downshift. I also like how it makes peak power up at 6200 rpm, it's a broad powerband.

Where do you see the 7163 maxing out on this motor? Supposed to be 550-600 hp right? Wonder if I'll need to step up to a 7670 when I get ready to swap turbos...

 

[David@FFtec]

Where do you see the 7163 maxing out on this motor? Supposed to be 550-600 hp right? Wonder if I'll need to step up to a 7670 when I get ready to swap turbos...

We haven't seen any signs of reaching the limit yet. The wastegate still has plenty of range and boost levels are mild. Borg-Warner rates it at 550HP so there's more in it.

 

[RubyRedBoost]

If the turbo isnt infact maxed out and you are monitoring the torque output is this why it dies out up top? Definitely a lot better plot with the upgraded snail but torque still drops to 275. It'd be nice to see a nice flat curve.

 

[dragonacc]

We haven't seen any signs of reaching the limit yet. The wastegate still has plenty of range and boost levels are mild. Borg-Warner rates it at 550HP so there's more in it.

Sounds good, is this with the upgraded rods and pistons too?

 

[cosmo]

If the turbo isnt infact maxed out and you are monitoring the torque output is this why it dies out up top? Definitely a lot better plot with the upgraded snail but torque still drops to 275. It'd be nice to see a nice flat curve.

It seems everyone starts to lose torque around 5500, either it's a fueling issue at higher RPMs with the pump being insufficient at that flow rate, or possibly an issue with something in the powertrain operating at higher power in the higher RPM range? Anyway, some insight from one of these companies would be awesome.

Sponsored